User guide
Fire brigade communication system EN 81-72
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SCHAEFER GmbH
Winterlinger Straße 4
72488 Sigmaringen
Germany
Telephone +49 7571 722-0
Fax +49 7571 722-99
[email protected]
www.ws-schaefer.de
Support
Please contact us for questions regarding this product:
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[email protected]
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SCHAEFER GmbH reserves the right to update technical data without prior notice.
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All rights reserved.
Ress.
Revision:
010856
2007-02-08
1.
2.
3.
4.
Overview
1.1
General description
6
1.2
Description of the fire brigade communication system
7
1.3
Wire designations
1.3.1
Wire pair designation
8
8
1.4
8
Machine room lift trigger
Components
9
2.1
Hand-held device (handset)
2.1.1
Terminal designations on the (handset)
9
10
2.2
Intercom station (freecom)
2.2.1
Terminal designations on the (freecom)
11
12
2.3
Intercom station (firecom)
2.3.1
Terminal designations on the (firecom)
13
14
Installation
15
3.1
Wiring
3.1.1
Network range
3.1.2
Network topology
3.1.3
EMC protection
3.1.4
Shield connection
15
15
15
15
16
3.2
17
Block diagram of a fire brigade communication system
3.3
Power supply
3.3.1
Emergency power supply unit and mains power
3.3.2
Emergency power supply unit only
3.3.3
Power supply via UPS
18
18
18
18
3.4
19
Splash-water protection
Initial operation
20
4.1
Assigning addesses to the components
4.1.1
Setting DIP switches
4.1.2
Address settings for the fire brigade communication system
4.1.3
Call key response time
4.1.4
Adjusting the volume
20
20
20
21
21
4.2
System settings
4.2.1
Invoking setup mode
4.2.2
Language
4.2.3
Assigning addresses
4.2.4
Setting the duration of voice connections
4.2.5
Automatic clearing of incoming call notifications
21
21
21
22
22
23
© SCHAEFER GmbH
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6
Fire brigade communication system EN 81-72
5.
4.3
User settings
4.3.1
Invoking the settings menu
4.3.2
Adjusting the contrast of the display
4.3.3
Switching off the buzzer
23
23
23
24
4.4
24
Broadcasts
Operation
5.1
Hand-held device (handset)
5.1.1
Calling an intercom station (F)
5.1.2
Terminating/prolonging voice connections
5.1.3
Switching between intercom stations
5.1.4
Answering paging signals
5.1.5
Fire brigade communication
5.1.6
Switching between intercom stations in fire brigade mode
5.1.7
Paging signals in fire brigade mode
5.1.8
Mute function
5.1.9
Energy-saving mode
25
25
25
26
26
26
27
28
28
28
5.2
Intercom station (freecom)
5.2.1
Paging key
5.2.2
Signalling
5.2.3
Energy-saving mode
5.2.4
Communication
5.3.1
Fire brigade key switch
5.3.2
Force key
5.3.3
Signalling
5.3.4
Energy-saving mode
5.3.5
Communication
29
29
29
29
30
30
30
31
31
31
6. Terminal connection diagram
7.
25
32
6.1
Star topology
32
6.2
Line topology
33
Technical data
34
7.1
General
34
7.2
Hand-held device (handset)
34
7.3
Intercom station (freecom)/(firecom)
35
7.4
Power consumption in fire brigade mode
35
©SCHAEFER GmbH
Fire brigade communication system EN 81-72
5
1.
Overview
1.1
General description
The EN 81-72 fire brigade communication system is modular in design. It consists of
three different components:
a) HAS_20 handset
b) FRC_20 freecom
c) FIC_20 firecom
These can be combined as required in the system.
The handset component is a hand-held device, which is intended for use in the
machine room or for the porter.
The freecom is an intercom station, which is to be installed in the cabin of the
fireman's lift.
The firecom is also an intercom station, which is to be installed on the fire brigade
access level.
By combining these three components, a fire brigade communication system can be
set up and operated in accordance with the EN 81-72 standard. The fire brigade
communication system can be used in normal mode, or in fire brigade mode.
A hand-held device controls the internal switching functions and thus serves as a
control unit. In contrast to the other hand-held devices (extensions), the control unit
has special functions such as broadcasting and control over establishing and
terminating connections.
The system is wired using a five-wire cable, onto which all subscribers are connected
in parallel. In addition to power supply and voice signals, this connection is also used
to transmit all logical states such as establishing or terminating connections, paging,
signalling, key inputs, etc.
Each hand-held device is equipped with a display and keypad, and can call all other
subscribers in the system and accept incoming paging signals and calls. When a call
or paging signal is answered, a voice connection is established. Additional voice
connections are not possible, but other incoming paging signals and calls are stored
in the system until they are processed.
Paging signals from intercom stations are indicated visually and audibly on all
assigned hand-held devices. The assignment of intercom stations to the hand-held
devices can be set when the system is put into service.
In order to test the functionality of all susbscribers, a broadcast can be made from the
control unit whereby each component is called and a reply is waited for. If no answer
is received, a message indicating the faulty component appears in the display. In
addition to the functionality of the components, the installation (e.g. connection
between components) is also tested.
© SCHAEFER GmbH
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Fire brigade communication system EN 81-72
1.2
Description of the fire brigade communication system
A communication system for the fire brigade enables interactive 2-way
communication during phases 1 and 2 between the cabin of the fireman's lift, the fire
brigade access level and the control room for the fireman's lift. This voice connection
takes precedence over others and is established via activation of the fire brigade key
switch on the fire brigade access level.
A fire brigade communication system consists of three components: A handset in the
machine room, which is programmed as a control unit, a freecom in the cabin of the
fireman's lift and a firecom on the fire brigade access level. It is important to note
that all of these components must be located in a fire-resistant area, e.g. no installed
components may be connected outside the fire-resistant area. In addition, the cables
between the components must also be installed in a fire-resistant area. Cables
installed outside of fire-resistant areas may be destroyed by fire or extreme heat, and
could prevent the fire brigade communication system from functioning properly.
An overriding voice connection to the cabin is established via activation of the fire
brigade key switch on the fire brigade access level. Any existing connection will be
interrupted immediately.
The voice connection triggers a visual indicator on the intercoms of all subscribers
and on the control unit as well. The intercom stations engaged in the voice
connection are clearly indicated in the handset display.
The handset operator in the machine room (control unit) has the authority to interrupt
the voice connection between the firecom and freecom at any time in order to
establish a new connection between the machine room and the cabin or between the
machine room and the fire brigade access level. The connection status can be
indicated on the touch pad on fire brigade access level and on the touch pad in the
cabin via an optional lamp attachment.
The new voice connection can be interrupted at the control unit by pressing the star
key.
An overriding voice connection can also be established from the fire brigade access
level to the cabin by pressing the force key.
After a preset period of 60 - 250 seconds, this connection will be interrupted as well
(see section 4.2.4, page 17).
The preset voice connection time can be extended if necessary by pressing the hash
key.
If the voice connection is terminated or if the preset time elapses, the control unit
reestablishes the voice connection between control unit and fire brigade intercom and
cabin (as long as the fire brigade key switch is still activated). There are instructions
for setting the preset voice connection time in the system manual. The handset
microphone (control unit) can only be activated by pressing the key when in fire
brigade mode (EN 81-72).
The status of voice connections can only be signalled on the freecom and firecom
via a lamp attachment (see sections 5.2.2 and 5.3.3, "Signalling").
©SCHAEFER GmbH
Fire brigade communication system EN 81-72
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1.3
Wire designations
The five wires are designated as follows: HIGH, LOW, UB, GND and LINE. These
are used to connect the hand-held device (for connection refer to section 2.1) and the
intercom stations (for connection refer to sections 2.2 and 2.3) in parallel. It is
absolutely imperative that a pair of wires is used to send and receive signals from
data lines (CAN bus).
1.3.1
Wire pair designation
1. wire pair
2. wire pair
3. wire pair
+UB / GND
CAN_L / CAN_H
LINE / GND (optional)
For longer cable runs, it is better to use a GND wire with a larger cross section. This
can be done by using two wires in parallel.
1.4
Machine room lift trigger
The EN 81-72 fire brigade communication system can only be used for fireman's lifts
which have a machine room (see DIN EN 81-72:2003(D), section 5.12.1 b, issued
November 2003).
Marking
The delivered version of the concerning component consists of the version
abbreviation and the version No., e. g. HAS10 article No. 010156.
Version abbreviation
and Version No.
20
Article No.
Order No./Sheet No./Device No.
The identification of the component is made by the following entries on the label:
Order No., Sheet No. and device No.
Note: The identification label is subject to change without notice.
© SCHAEFER GmbH
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Fire brigade communication system EN 81-72
2.
Components
2.1
Hand-held device (handset)
The handset consists of a hand-held device, a wall bracket and a flexible connection
cable. All of the connection terminals for the hand-held device can be found inside
the wall bracket (see section 2.1.1).
The handset is used as a hand-held device in the machine room for the fireman's lift,
as an extension device in another machine room or as a hand-held device for the
porter (please observe the instructions under "Installation" in chapter 3).
The display, LED and keypad are located on the outside. The speaker and
microphone are located on the inside. The hand-held device was designed without a
cradle switch so that it can be left in the wall bracket when dialling. In order to
communicate, the hand-held device must be picked up. The flexible connection cable
can be stretched out to a length of approx. 2.5 m. If it is stretched out any further, the
plug connections on the wall bracket and hand-held device may be damaged.
Outside
Inside
Fig. 2.1 handset
©SCHAEFER GmbH
Fire brigade communication system EN 81-72
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2.1.1
Terminal designations on the (handset)
The wall bracket console consists of a stainless steel plate, a board assembly and a
cover on which the cradle hooks for the hand-held device are located. To mount it on
a wall, the steel mounting plate is fastened to the wall. The hole dimensions are
provided in section 7.2.
The connection terminals for the handset are located inside the console. The cover
can be removed by lifting out the hand-held device and loosening both of the screws.
The 10-pin connection terminal has designations for the wires of various system
components. There are two screw terminals for each signal. For fire brigade
communication systems, the power supply must be fed in through the handset which
is installed in the machine room for the fireman's lift. The "GND" and "24 V DC"
terminals located on the board in the console have been provided for this purpose
(see section 2.2.2). For this device, jumpers JPR1 and JPR2 in the console need to
be set. In order to minimise voltage drop caused by resistance in the wires, this
hand-held device should be located close to the centre of the cable network.
Alternatively, the diameter of the GND wire can be enlarged throughout the entire
system.
Figure 2.1.1 Wall bracket console (board)
© SCHAEFER GmbH
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(With cover installed)
Fire brigade communication system EN 81-72
2.2
Intercom station (freecom)
The intercom station enables interactive 2-way communication. The intercom station
has to be installed behind the front of the control panel in the cabin or in the cabin
ceiling at a distance of no more than 0.8 m from the lift operator. A waterproof model
is used for installation in the fireman's lift in accordance with EN 81-72.
The openings for the speaker and the microphone may not be covered by a solid
material such as sheet metal, etc. The volume should be adjusted by the installer to
suit the particular situation.
Key features of the freecom intercom station:
a) Electrically conductive plastic housing (ESD)
b) 11-pin terminal block for connecting wires with a diameter of up to 1 mm²
c) Volume control
d) DIP switch for setting the address
e) Microphone and speaker
f) Splash-water protection and penetration protection
The freecom is delivered with a yellow device seal, approx. 22 x 16 mm. An
identification label is on the back side, indicating the device name and version, article
No. as well as order related data (order/sheet/device).
Figure 2.2.1 Freecom intercom station (front)
Figure 2.2.2 Freecom intercom station (back)
Note:
The supplied version can deviate
(colour and terminal location) from the illustration.
Note:
The supplied version can deviate
(colour and terminal location)
illustration.
©SCHAEFER GmbH
from
the
Fire brigade communication system EN 81-72
11
2.2.1
Terminal designations on the (freecom)
The freecom has the following connections:
Terminal
s
Kl 1
Kl 2
Kl 3
Kl 4
Kl 5
Kl 6
Kl 7
Kl 8
Kl 9
Kl 10
Kl 11
Figure 2.2.3 Freecom terminals
Signal
Paging reset indicator (H1)
Voice connection indicator (H2)
Call key (T1)
LINE
GND
UB
LOW
HIGH
Reserved
Reserved
Reserved
Table 2.2.4 Freecom terminal assignment
The call key (T1) and lamp attachments (H1 and H2) should be connected according
to figure 2.2.3. If an additional notification signal with a different potential is required,
a key with separate switching contacts should be used. The UB potential for key and
lamp attachments does not have to be connected to terminals 3/6. For the UB supply
wire, it is advisable to install a distribution terminal in close proximity to the intercom
station, keypad or lamp attachments.
If the lamp attachments are to be powered by an operating voltage different from that
of the UB, they can also be fed from an auxiliary power source. In this case, the
reference potential of the freecom (GND) and that of the auxiliary power source must
be connected.
The connections for the lamp attachments are designed as open collectors
(npn max. 30 V / 50 mA).
© SCHAEFER GmbH
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Fire brigade communication system EN 81-72
2.3
Intercom station (firecom)
The intercom station enables interactive Two-way communication. The intercom
station has to be installed behind the front of a fire brigade control panel on the fire
brigade access level. A waterproof model is used for installation in accordance with
EN 81-72.
The openings for the speaker and the microphone may not be covered by a solid
material such as sheet metal, etc. The volume should be adjusted by the installer to
suit the particular situation.
Key features of the firecom intercom station:
a) Electrically conductive plastic housing (ESD)
b) 11-pin terminal block for connecting wires with a diameter of up to 1 mm²
c) Volume control
d) DIP switch for setting the address
e) Microphone and speaker
f) Splash-water protection and penetration protection
The firecom is delivered with a red device seal, approx. 22 x 16 mm. An
identification label is on the back side, indicating the device name and version, article
No. as well as order related data (order/sheet/device).
Figure 2.3.1 Firecom intercom station (front)
Figure 2.3.2 Firecom intercom station (back)
Note:
The supplied version can deviate
(colour and terminal location) from the illustration.
Note:
The supplied version can deviate
(colour and terminal location) from the illustration.
©SCHAEFER GmbH
Fire brigade communication system EN 81-72
13
2.3.1
Terminal designations on the (firecom)
The firecom has the following connections:
Terminal
s
Kl 1
Kl 2
Kl 3
Kl 4
Kl 5
Kl 6
Kl 7
Kl 8
Kl 9
Kl 10
Kl 11
Figure 2.3.3 Firecom terminals
Signal
Signalling indicator (H1)
Voice connection indicator (H2)
Force key (T1)
LINE
GND
UB
LOW
HIGH
Fire brigade key switch (S2)
Reserved
Reserved
Table 2.3.4 Firecom terminal assignment
The force key (T1) and the lamp attachments (H1 and H2) should be connected
according to figure 2.3.1. The UB potential for keypad, fire brigade key switch and
lamp attachments does not necessarily have to be connected to terminals 3/6. For
the UB supply wire, it is advisable to install a distribution terminal in close proximity to
the intercom station, keypad or lamp attachments.
When connecting lamps with different voltages, please use the same options given
for the freecom.
The input on terminal (KI 3/9) is provided for the connection of a fire brigade key
switch (S2). When supply voltage is applied, the fire brigade communication system
is switched to fire brigade mode at the fire brigade key switch via terminal (KI 3/9)
and a voice connection between the cabin, fire brigade access level and machine
room is established. For this purpose, the cabin intercom station address has to be
set to F1. The fire brigade key switch has to be configured in accordance with the
requirements of the control system manufacturer and in compliance with EN 81-72
directives.
© SCHAEFER GmbH
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Fire brigade communication system EN 81-72
3.
Installation
3.1
Wiring
All system components are connected in parallel on one wire. Most of these
connections require the use of a five strand cable. Shielded, twisted pair wires (STP)
should always be used. If standard telephone cable is to be used, it is important to
observe whether the size of the wires is specified as conductor diameter or conductor
cross section (see table 3.1.1).
3.1.1
Network range
The required cross section is dependent upon the range of the system. Range is
defined as the distance between the most remote subscribers in the system.
The following specifications are provided based on the respective distance:
Network range [m]
Up to 250
Up to 500
Nominal cross section
[mm²]
0,5
1,0
Nominal diameter [mm]
approx. 0.8
approx. 1.3
Table 3.1.1
3.1.2
Network topology
There are no topology requirements for laying wires, this means that in addition to
line wiring, tree and star structures are also possible. In order to ensure good voice
quality, the number of junctions should be kept to a minimum. It is important to make
sure that good contacts are made between the individual cable segments.
3.1.3
EMC protection
In order to prevent interference in the system caused by EMC issues, it is important
to ensure that individual wires in the cable are used exclusively for the operation of
the fire brigade communication system. The utilisation of unused wires in the cable
for other purposes should be avoided. The latter is to ensure that the power supply
lines for the fire brigade communication system do not cause interference in the fire
brigade communication system. Potential interference can also be avoided by not
using the power supply device for the fire brigade communication system to power
other systems. It is also important to ensure that one of the following devices is
connected at the end of a cable run: a freecom, a firecom or a handset. This
means that there should be no "open-ended" cable runs.
©SCHAEFER GmbH
Fire brigade communication system EN 81-72
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3.1.4
Shield connection
As a general rule, the shield has to be interconnected with every clamp connection. A
solder lug has to be fitted onto the cable shield in the console. The solder lug should
be connected to the mounting plate with a fastening screw. If more than one cable
end is present, each cable shield has to be fitted with a solder lug. The cable shields
can be combined at the screw that fastens them to the mounting plate. The shield for
the entire run has to be connected to the ground wire on at least one end. The
handset can be grounded (optional) in accordance with generally applicable
requirements. When connecting a freecom or a firecom, the cable shield has to be
connected to at least one point on the housing of the freecom or the firecom. This
can be done by fitting the cable shield with a solder lug or cable terminal and
attaching it to the freecom or firecom with a fastening screw. When making contact
with the housing, a lock washer (grooved washer) should be inserted between the
housing and the solder lug. It is imperative that the conical side of the washer faces
the housing. The connection is compressed with the fastening screw. The lock
washers are included in the scope of delivery for freecom and firecom intercom
stations. The housing is enriched with electrically conductive substances. The safety
washer is pressed into the plastic, thus creating a galvanic connection with the
conductive substances. The diagram below illustrates the order in which the fittings
are installed.
Grooved washer (conical side towards housing)
Shield
connector
4 x M3 spacer nuts (16 mm)
Figure 3.1.4 Shield connection
© SCHAEFER GmbH
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Fire brigade communication system EN 81-72
3.2
Block diagram of a fire brigade communication system
Figure 3.2 Block diagram
Fire-resistant area
©SCHAEFER GmbH
Fire brigade communication system EN 81-72
17
3.3
Power supply
In the event of an emergency, the EN 81-72 fire brigade communication system must
be powered independently from the public power grid. This means that it is subject to
the guidelines established under EN 81-28, section 4.2.4 (Power supply: „The fire
brigade communication system must be able to function independently for at least 1
hour."). There are basically two options for this:
3.3.1
Emergency power supply unit and mains power
An emergency power source is connected in parallel via a decoupling diode (wiring
diagram will be provided by the manufacturer of the emergency power supply unit).
Note: Should the mains power fail, the power supply for the fire brigade
communication system may not be interrupted.
3.3.2
Emergency power supply unit only
In this case, only an emergency power supply unit is used to power the fire brigade
communication system.
Note: If the transformer in the back-up unit is not sufficiently rated for the connected
load, there is a risk that the storage battery will be drained too quickly during voice
connections and therefore may not provide adequate capacity (1 hour) to back-up the
system. The connected load for the entire fire brigade communication system can be
determined by adding the connected loads of the individual components. The
individual connected loads are provided in the system manual (chapter on 'Technical
Data'). If lamp attachments are installed, they have to be taken into account as well.
3.3.3
Power supply via UPS
The EN 81-72 fire brigade communication system can also be powered by an
"uninterrupted power supply" unit. If other systems are to be powered by the UPS,
this should be done via a DC/DC converter. On request, these devices can be
supplied by SCHAEFER GmbH.
© SCHAEFER GmbH
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Fire brigade communication system EN 81-72
3.4
Splash-water protection
The firecom intercom station on the fire brigade access level is supplied as a splashwater protected model in accordance with EN 81-72 (IP X3). The freecom intercom
station in the cabin is supplied for use in the fireman's lift as a splash-water protected
model in accordance with EN 81-72 (IP X3). This waterproof model is only available
with the 4848 wg hole pattern.
Note: Only the preassembled faceplates from SCHAEFER GmbH fulfil EN 81-72
guidelines. Regarding splash-water protection, SCHAEFER GmbH does not
guarantee intercom stations installed by the customer or non-OEM intercom stations
(opened devices). If the firecom or freecom are not properly installed, this may
result in damage not only to the intercom stations, but also to components built into
the faceplate (buttons, displays, etc.) due to splash water penetrating the units.
Seal
Penetration protection
Penetration
protection
Figure 3.4.1 Faceplate
(Rear side, 4848 wg hole pattern)
©SCHAEFER GmbH
Figure 3.4.2 Intercom station
Fire brigade communication system EN 81-72
19
4.
Initial operation
4.1
Assigning addresses to the components
All components in the system have to be assigned with an address. The handset is
assigned with 0 as an address. The hand-held device assigned as 0 is automatically
recognised as the control unit and therefore receives certain special priveleges.
Addresses are assigned to hand-held devices by calling up system settings, and to
intercom stations by means of a DIP switch. The address F16 is reserved for the
firecom in fire brigade access level. The address F1 is reserved for the firecom in
the cabin of the fireman's lift.
In order for new addresses to be recognised by the system, a broadcast has to be
triggered from the handset (control unit) after changing the address of any
components connected to the system.
The handset (control unit) operator will be prompted to make a broadcast upon startup when the power supply is connected or when power is available again after a
mains power failure. However, this message will only appear in the display for
approx. 8 seconds. After the installation is complete, a broadcast can be triggered
and connections to other components can be checked by pressing the number "0." If
any of the subscribers do not appear in the list or if the "no answer" message
appears, the wires to the respective components should be inspected (also see
section 4.4).
4.1.1
Setting DIP switches
The address is set with four of the five DIP switches.
Table 3 shows the respective positions of switches 1 through 4.
F1
F2
F3
F4
F5
F6
F7
F8
F9
F10
F11
F12
F13
F14
F15
F16
Switch in
the ON
position
Table 4.1.1
4.1.2
Address settings for the fire brigade communication system
F1
F16
Freecom in cabin of fireman's lift
Firecom on fire brigade access level
© SCHAEFER GmbH
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Fire brigade communication system EN 81-72
4.1.3
Call key response time
The fifth DIP switch is used to set the response time for the call key. Response time
is the minimum amount of time the call key must be pressed in order to trigger a call.
Response time
Position of switch no.
5
0.5 seconds
2 seconds
Table 4.1.2
4.1.4
Adjusting the volume
There is a volume control on every intercom station. In order to prevent screeching
noises which can arise during communication, there is an integrated switch which
automatically reduces the volume when feedback occurs. In order for this feature to
function properly, the set volume should not exceed a certain level. This level will be
determined by the acoustics of the cabin.
It is important to make sure that the speaker and microphone opening is as flush with
the front panel as possible when installing the intercom station.
For installation in the ceiling of the cabin it is important to ensure that the speaker
and microphone opening faces downward in the direction of the cabin, and that it is
not covered up by sheet metal or any other object.
If the volume is set too high, speech will not be clearly transmitted. Turn down the
volume if this is the case.
4.2
System settings
Please read this chapter carefully. Incorrect programming of addresses or incorrect
assignment of the intercom stations can compromise the functionality of the system.
4.2.1
Invoking setup mode
Wait until the handset goes into energy-saving mode (display switched off). Enter the
following four digit code: 2 - 4 - 6 - 8. The software date will appear in the display.
Press the number "5" key to enter setup mode.
4.2.2
Language
Select a language at the first menu prompt.
The display shows:
D E U T S C H
# E N G L I S H
Using the " " or "#" keys, choose between German and English text.
©SCHAEFER GmbH
Fire brigade communication system EN 81-72
21
4.2.3
Assigning addresses
Component addresses will be assigned at the next menu prompt.
The display shows:
A D DR .
X X
N O
# Y E S
Press the "#" key to confirm the address shown and exit the menu prompt.
Press the " " key to change the address of the handset.
The hand-held device is initially assigned an address of "0."
The display shows:
N E W
A D D R
0 0
Enter the new address for the hand-held device using the numeric keys. Please note:
two digits ("00") have to be entered. You can return to the first position by pressing
the " " key. Press the "#" key to complete your entry.
The display will show:
A D D R .
X X
N O
# Y E S
Press the "#" key to confirm the new address. You can discard the change by
pressing the " " key. The old address will remain unchanged.
Note: For fire brigade communication systems the handset (control unit) must be
installed in the machine room for the fireman's lift. This hand-held device has to be
programmed with 0 as the address.
4.2.4
Setting the duration of voice connections
At this menu prompt, the maximum duration for voice connections can be set. This
means that after a predefined period of time (60 to 250 seconds), the person using
the handset (control unit) will be required to prolong the duration of the voice
connection (see section 1.2 "Description of the fire brigade communication system").
The display shows:
T I ME
Y E S
X X X
# N O
Press the "#" key to confirm the duration shown for voice connections and exit the
menu prompt.
Press the " " key to change the duration of voice connections. The system limits the
period of time you can enter to between 60 and 250 seconds.
The display shows:
T I ME
N E W
0 0 0
s e c .
Use the numeric keys to enter a new duration for voice connections. Please note:
three digits (060, 061... 250) have to be entered. You can move back to the previous
digit by pressing the " " key.
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Fire brigade communication system EN 81-72
If the value entered exceeds 250, the entry will not be accepted. If the value entered
is below 60, it will be automatically reset to 60 seconds after being confirmed by the
system. Press the "#" key to complete your entry.
T I ME
X X X
N O
# Y E S
The display will show:
Press the "#" key to confirm the new duration for voice connections. You can discard
the change by pressing the " " key. The old duration for voice connections will
remain unchanged.
4.2.5
Automatic clearing of incoming call notifications
In general, paging signals will be displayed until they are answered by a hand-held
device. As the EN 81-72 fire brigade communication system is only used for voice
connections and not as an alarm registration device, it is possible to set a time limit
after which a paging signal is cleared from all hand-held devices (see section 5
"Operation"). This setting is applied to the entire system and can only be changed
from the handset (control unit).
The display shows:
A l a r m
Z L
N O
# Y E S
Press the " " key if you do not want incoming call notifications to be cleared
automatically. Press the "#"-key and you will be prompted to enter a time limit.
The display shows:
t i . L i m i t
0 0
m i n
You can specify a period between 1 and 99 minutes. Complete your entry with the
"#"-key and confirm the value again.
4.3
User settings
You can adjust the contrast of the display and switch off the buzzer in the hand-held
device via the "Settings" menu.
4.3.1
Invoking the settings menu
Wait until the handset goes into energy-saving mode. Press the number "5" key to
enter the "User settings" menu.
4.3.2
Adjusting the contrast of the display
At the first menu prompt, you can adjust the contrast of the display to suit the
surrounding lighting conditions.
The display will show:
C o n t r a s t
1 +
2 # >
The contrast can be increased and/or reduced by pressing keys "1" and "2".
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Fire brigade communication system EN 81-72
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Press the "#" key to advance to the next menu prompt. If an entry is not made within
20 seconds, the user settings menu will be exited without saving the settings.
4.3.3
Switching off the buzzer
At the second menu prompt, you can switch off the buzzer.
The display will show:
B u z z e r
N O
# Y E S
Use the " " and "#" keys to select whether the buzzer should be used to signal
alarms and incoming calls. All incoming calls will still be signalled in the display and
via the LED.
4.4
Broadcasts
Broadcasts are triggered from the handset (control unit). This can be used to check
that there are connections to all of the other components. A broadcast can be
triggered at any time, as needed, or when prompted by the system, by pressing the
"0" key. When the system is connected to the supply voltage you will be prompted to
trigger a broadcast.
The display will show:
C H E C K
P r e s s
0
Press the "0" key to start the broadcast.
All components which are recognised during the broadcast will be listed in sequential
order in the second line of the display. The number in the upper right-hand corner of
the display is only a reference number and is not related to the actual address of a
component.
The display shows:
For example: Firecom detected
C H EC K
F WSP
3 1
3 2
A warning message will be displayed if any previously recognised components are
not detected during the broadcast. Missing components will be briefly shown in the
display. These components can be called one by one.
The display will show:
C H E C K
?
N O
# Y E S
Press the " " key if the components have been removed from the network and
should not be called. A message will appear in the display indicating that the
subscriber will be deleted from the list. Confirm this action by pressing any key.
You can begin calling the components by pressing the "#" key. As each component
responds, the address of the extension is displayed and the component is added to
the list. If a component does not respond, inspect the component and/or the cable.
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Fire brigade communication system EN 81-72
If a deleted component is recognised again during a subsequent broadcast or is
acknowledged upon signalling an alarm or making a call, it will be automatically
added to the subscriber list.
In order to store all of the addresses for components connected to the system, make
sure all voice connections have been terminated. The hand-held device handset
(control unit) automatically goes into "power down" mode and immediately saves the
addresses of all components connected to the system. The display will go out.
5.
Operation
5.1
Hand-held device (handset)
The handset can call all other components in the fire brigade communication system
in order to establish a voice connection. The bottom row of keys ( 0 #) is used to
select a remote station, and then the number of the subscriber can be entered.
5.1.1
Calling an intercom station (F)
C A L L
F _
Press the " " key. The display shows:
Using the numeric keypad, enter the number of the intercom station. After the entire
number has been entered, the intercom station (freecom or firecom) will be called
and a voice connection will be established. As this system uses a two-digit format for
addresses, single-digit addresses have to be entered either as a two-digit number
(01) or as a single digit followed by the "#" key ("1#").
A voice connection with the firecom can be established by entering "F16".
The call can be cancelled by pressing the " " key.
The display shows:
..
XX = number of the freecom ("F1" in this case)
FWSP = connection with the firecom
C ON N E C T
F X X
In order to prevent the conversation in the cabin from being unintentionally
overheard, the voice connection is initially established in one direction only - to the
cabin. Two-way communication is established when the call key (optional
attachment) in the cabin is pressed. This one-way mode of communication is only
active when the EN 81-72 fire brigade communication system is not in fire brigade
mode. The voice connection can be terminated by pressing the " " key.
5.1.2
Terminating/prolonging voice connections
Voice connections can only be terminated from the hand-held device. The handset
user can terminate the connection and make the line available for other voice
connections by pressing the " "-key.
In addition, all voice connections will be automatically terminated after a predefined
duration unless the connection is prolonged by the user (see section 4.2.4).
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Fire brigade communication system EN 81-72
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Ten seconds before termination, an audible signal will be given and the following
message will appear in the display:
C ON N E C T
X X X s + #
Press the "#" key to prolong the voice connection for an additional XXX seconds.
5.1.3
Switching between intercom stations
If a voice connection made from the handset to an intercom station is active, it can
be terminated as described in section 5.1.2. After the voice connection has been
terminated, a new voice connection with another intercom station may be established
as described in section 5.1.1.
5.1.4
Answering paging signals
Incoming calls are signalled via the buzzer and the LED on the handset. As soon as
a paging signal is answered, the LED starts to blink and the buzzer is sounded. As
long as the call key on the freecom is being depressed, the buzzer in the handset
will emit a sustained audible signal. Once the key is released, an intermittent audible
signal is emitted. This signal will be heard until the paging signal is answered at the
handset and a voice connection is established with the intercom station.
The paging signal is shown in the display:
Press the "#" key to answer the paging signal.
A voice connection will be established and
shown in the display:
A L A R M
F X X
#
C ON N E C T
F X X
In this case, a two-way voice connection will be established straight away with the
freecom in the cabin. The paging signal is deleted as soon as the voice connection is
established.The voice connection can be terminated by pressing the " " key.
Note: Paging signals can only be triggered by a freecom which is not already
engaged in a voice connection. Make sure that the setting for the "Automatic clearing
of incoming call notifications" (section 4.2.5) has been properly configured. In
general, the firecom cannot trigger paging signals.
5.1.5
Fire brigade communication
A voice connection is automatically established for the fire brigade after the fire
brigade key switch on the fire brigade access level has been activated. At this
moment, the fire brigade communication system goes into "fire brigade mode." In
accordance with EN 81-72, the firecom, freecom and handset are all included in the
voice connection.
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Fire brigade communication system EN 81-72
The status of the voice connection is signalled on the intercom stations via the
optionally attachable lamps "H2". The handset in the machine room for the fireman's
lift will indicate which components (excluding the handset) are still participating in the
voice connection.
The display shows:
C O N N E CT
F 1
F W
In this example, in addition to the hand-held device, the freecom intercom station in
the cabin "F1" and the firecom intercom station on the fire brigade access level "FW"
are still participating in the voice connection.
Note: In order to activate the hand-held device, one or more of the keys in the top
three rows has to be pressed. Establishing a fire brigade voice connection (also see
"Operating the firecom").
5.1.6
Switching between intercom stations in fire brigade mode
If, for example, a voice connection is taking place between the freecom in the cabin
"F1," the firecom intercom station on the fire brigade access level and the handset
in the machine room for the fireman's lift, these will all be indicated on the handset
display.
Press the " " key twice.
C ON N E C T
F 1
F W
The display shows:
C A L L
F _
For a period of approx. 5 seconds, a voice connection can be established with the
freecom in the cabin or with the firecom on the fire brigade access level by entering
their respective numbers.
If a voice connection with the selected intercom station is not established within
approx. 5 seconds, or if such connection is established and then terminated, the
connection between the freecom, firecom and handset will be reestablished (in fire
brigade mode only). This is advantageous if it becomes necessary to suppress
persistent noise from a specific intercom station.
Note: The system remains in "fire brigade" mode during the entire process. In order
to activate the hand-held device, even for a voice connection with a single intercom
station, one or more of the keys in the top three rows on the keypad has to be
pressed.
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Fire brigade communication system EN 81-72
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5.1.7
Paging signals in fire brigade mode
When the fire brigade communication system is in "fire brigade mode," the paging
signal is given via an intermittent audible signal which is emitted every 12 seconds
(approx.) from the hand-held device. The paging signal is shown in the display:
The display shows:
A L A R M
F X X
In this case, two steps are necessary.
Press the " " key to terminate or park the fire brigade voice connection.
The paging signal is still shown in the display:
A L A R M
F X X
#
Press the "#"-key.
A voice connection will be established and
shown in the display:
C ON N E C T
F X X
The voice connection can be terminated by pressing the " " key.
Note: After a predefined duration, this voice connection will be terminated by the
system and the fire brigade voice connection will be reestablished. In order to
activate the hand-held device, even for a voice connection with a single intercom
station, one or more of the keys in the top three rows on the keypad has to be
pressed.
5.1.8
Mute function
In order to prevent loud noises from being constantly transmitted to the fire brigade
access level and/or the cabin while in fire brigade mode, the microphone in the handheld device has been designed so that it will only be active while the hand-held
device is actually being used. The microphone is activated by depressing one or
more of the keys in the top three rows of the keypad. The microphone is disabled
again when the key(s) is released.
If the fire brigade communication system is not in fire brigade mode, the top three
rows of keys will not have a muting function during a voice connection between the
hand-held device and an intercom station.
Note: For this version, the speaker is also disabled when the mute function is active.
The ( 0 #) keys are located in the bottom row of keys, and they always have the
same functions regardless of the mode of operation.
5.1.9
Energy-saving mode
After ten seconds of inactivity, the hand-held device handset switches into stand-by
mode in order to conserve energy. The display and all other indicators are switched
off while in this mode. The device is automatically activated if a key is pressed or
there is an incoming call.
© SCHAEFER GmbH
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Fire brigade communication system EN 81-72
5.2
Intercom station (freecom)
The intercom station can be equipped with an optional paging signal key (T1) and
two lamps (H1 and H2) which are connected as external attachments (fig. 2.2.1).
5.2.1
Paging key
The paging key has two functions:
a) To initiate a paging signal when the freecom is not participating in a voice
connection, and to
b) enable the microphone.
When an incoming voice connection is initially established with the freecom,
communication is one-way only. The person using the intercom station can hear what
is being said on the freecom, for example. The person at the other intercom station
can not hear what is being said in the cabin. Two-way communication is only
established after the paging key has been pressed.
Note: The one-way communication feature is disabled when in "fire brigade mode".
5.2.2
Signalling
The first indicator (H1) acknowledges the paging signal, and is only cleared from the
freecom after the handset (control unit) has confirmed acceptance of the incoming
call. This confirmation occurs automatically via the control unit and does not require
input from the user. The second indicator (H2) signals that a voice connection has
been established. The following indications are given:
a) H2 is illuminated = active voice connection
b) H2 is blinking = the fire brigade communication system is currently in fire
brigade mode and the microphone is disabled.
Paging signals are indicated on the handset (control unit), both visually and audibly.
It is not possible to listen-in on the conversation in the cabin unless an alarm has
been triggered. Two-way communication is only enabled after the alarm key in the
cabin has been pressed.
5.2.3
Energy-saving mode
After ten seconds of inactivity, the freecom switches into stand-by mode in order to
conserve energy. The device is automatically activated if a call is initiated or if a call
is received (voice connection established).
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Fire brigade communication system EN 81-72
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5.2.4
Communication
Communication is facilitated by a microphone (for replies) and a speaker (for
incoming speech). The microphone can optimally process and transmit speech
signals at a range of 5 to 50 cm. The speaker volume is set by the system installer
and cannot be adjusted once it is in operation. An integrated electronic switch
prevents feedback from occurring.
Note: As long as the microphone is picking up sound waves, the device briefly
suppresses output through the speaker. This means that as long as someone is
speaking at a detectable level, nothing will be heard through the speaker.
5.3
Intercom (firecom)
The installation of a force key (T1) and a fire brigade key switch (S2) on the intercom
station is compulsory. The fire brigade key switch is not located in the same faceplate
as the intercom station. Optional lamps (H1 and H2) can be installed as external
attachments (see section 2.3.1).
5.3.1
Fire brigade key switch
The fire brigade key switch has to be configured in accordance with the requirements
of the control system manufacturer and in compliance with EN 81-72 directives.
The first phase of the fire brigade mode is initiated via activation of the fire brigade
key switch on the fire brigade access level. At this point, an interactive, two-way voice
connection is established by the EN 81-72 fire brigade communication system
between the firecom intercom station on the fire brigade access level, the freecom
intercom station in the cabin of the fireman's lift and the hand-held handset device in
the machine room for the fireman's lift. At this moment, the fire brigade
communication system goes into "fire brigade mode." The EN 81-72 fire brigade
communication system remains in "fire brigade" mode during phases 1 and 2 and
maintains the communication described above.
5.3.2
Force key
The force key has two functions:
a) If the system is in "fire brigade" mode and the force key is pressed, this
switches off the microphone in the freecom. When the force key is released,
the microphone in the freecom is switched on again and a normal, bidirectional voice connection is reestablished. Extremely loud and disturbing
noises can be briefly suppressed so that a voice connection in the cabin can
be established without difficulty.
b) If the system is in "fire brigade" mode and the freecom or the firecom are not
already engaged in a voice connection, a voice connection can be established
between the machine room, cabin and fire brigade access level by pressing
the force key. These functions were designed to ensure that the person using
the firecom on the fire brigade access level always has priority when speaking
to the cabin.
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Fire brigade communication system EN 81-72
5.3.3
Signalling
The firecom intercom station has a connection terminal for two optional lamps: an
indicator for "signalling" (H1) and an indicator for "voice connections" (H2). The
following indications are given:
a) Both lamps are off = no activity
b) H1 is lighted and H2 is off = the device is malfunctioning, or the fire brigade
communication system is in fire brigade mode and the connection to the cabin
is faulty.
c) H1 is off and H2 is lighted = The fire brigade communication system is not in
fire brigade mode and the firecom is engaged in a voice connection (machine
room/fire brigade access level). Or fire brigade communication system is in fire
brigade mode and the firecom is engaged in a voice connection (cabin/fire
brigade access level).
d) H1 is blinking and H2 is off = The fire brigade communication system is in fire
brigade mode and the firecom is not engaged in a voice connection. There is
only a voice connection between the machine room for the fireman's lift and
the cabin in the fireman's lift.
e) H1 is blinking and H2 is lighted = The fire brigade communication system is in
fire brigade mode and the firecom is engaged in the voice connection
(machine room/fire brigade access level). At present, there is no voice
connection with the cabin.
Note: If the fire brigade communication system is in "fire brigade mode," the person
using the firecom can force a voice connection with the cabin at any time by
pressing the force key (see section 5.3.2).
5.3.4
Energy-saving mode
After ten seconds of inactivity, the firecom switches into stand-by mode in order to
conserve energy. The device is automatically activated if the force key is pressed,
the fire brigade key switch is activated or if a call is received (voice connection
established).
5.3.5
Communication
See section 5.2.3.
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Fire brigade communication system EN 81-72
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6.
Terminal connection diagram
6.1
Star topology
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Fire brigade communication system EN 81-72
6.2
Line topology
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7.
Technical data
7.1
General
• Power supply
• Number of subscribers
• Distance between components
• Operating voltage of the components
• Power consumption of the system
7.2
24 V DC (± 15 %)
max. 1 hand-held device
max. 2 intercom stations
max. 500 m
min. 12 V
max. 5 A for 1.0 mm²
max. 2.5 A for 0.5 mm²
Hand-held device (handset)
• Power consumption (per device)
• Temperature range
• Installation dimensions (in mm)
approx. 7 - 10 mA (stand-by)
approx. 40 mA (active)
max. 60 mA (voice connection)
0 °C to 40 °C (2 h)
see drawings 7.2
72
54
61
36
182
9
ø1
4
40
176
4
72
4
4
Mounting plate, console
Drawings 7.2
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Fire brigade communication system EN 81-72
7.3
Intercom station (freecom)/(firecom)
• Power consumption (per device)
• Temperature range
• Installation dimensions (in mm)
approx. 7 - 10 mA (stand-by)
approx. 45 - 50 mA (active)
approx. 80 - 90 mA (voice connection)
0 °C to 65 °C (2 h)
see drawings 7.3
Drawings 7.3
7.4
Power consumption in fire brigade mode
The following specifications are applicable for the fire brigade communication system
without lamps, without auxiliary loads, and with a nominal operating voltage of
24 V DC.
System in an idle state (stand-by)
Operating state (active)
Active voice connection (phase 1 and 2)
©SCHAEFER GmbH
approx.
40 mA
approx. 140 - 150 mA
approx. 250 - 26
Fire brigade communication system EN 81-72
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