XT546-246-346
selec
TERMINAL CONNECTIONS
LOAD CONNECTIONS
XT546
OP288-V03
Operating Instructions
For load current less than 0.5A
XT246
L
L
+
-
N
NO1
6
COM
2
7
RST
3
8
11
-
N
START
COM1
72x72
: Dual, 3 digit seven segment LED display
: 85 to 270V AC, 50/60 Hz
24V AC / DC (Optional)
Operating
: On Delay, Interval, Cyclic On first &
Modes
Cyclic Off first
Time Ranges : 9.99 / 99.9 / 999sec
9.59 min:sec, 99.9 / 999 min,
9.59 hour:min, 99.9 / 999 hour
Counting
: Down
Direction
Relay Rating : 5A@250V AC / 28V DC
Start Input
: Pulse, Gate (Programmable)
Reset
: On interruption of power, front panel reset &
Outputs
Memory
Retention
Accuracy
5
10
12
NC2
N
COM
RST
4
11
XT
XT
C
12
13
NC1
7
14
terminal reset
: 2 ; 1 C/O (SPDT)
: 10 years
XT346
COM
MOV
C
R
C
MOV
C
Snubber
NO2
NO2
RST
11
1
2
LOAD
FRONT PANEL DESCRIPTION
NC2
13
14
15
16
17
18
4
3
4
5
6
7
8
9
3
On line
For installing the Timer
1. Prepare the panel cutout with proper dimensions as shown below :
Outline
Panel cutout
Dimensions (in mm)
Dimensions (in mm)
D
F
B
(Whichever is greater)
MODELS
XT546
DIM
C
E
PROG
2
LCK
RST
Config
Lock
Parameter name
Parameter setting
2
Set Time
3
O/P Status ( Lit when O/P is ON )
4
Time Range ( Blink in online mode )
For Reset
NOTE : Press + (LCK) key
together continuously for 3sec.
to enter into protection level.
Panel Cutout
: Setting : ± 0.05% of set time or 50 msec
Repeat : ± 0.05%
Temperature : Operating : 0 to 50OC
Storage : -20 to 75OC
Humidity
: 95% RH
Housing
: PC tinted black
Weight
: XT546 : 140 gms
XT246 : 190 gms
XT346 : 240 gms
R
Process Time
PROTECTION LEVEL
Side view
H
M
S
SET
MECHANICAL INSTALLATION
Front bezel
XT546
NC1
NO1
COM1
A
C
Snubber
COM2
NC2
12
N
L
NO
COM2
START
10
Contactor
XT
LOAD
NO
selec
SPECIFICATIONS
Display
Supply
9
10
6
96x96
NC1
2
3
5
9
L
XT
COM1
COM2
4
For bigger loads, use interposing
relay / contactor
N
R
NO2
NO1
48x48
START
8
1
+
1
L
G
A
B
C
D
E
F
G
48
48
94
45
4
46
46
XT246
72
72
83.7
67
10
69
69
XT346
96
96
73
90.5
10
92
92
2. Remove the clamp from the controller and push the controller
into the panel cutout. Insert the clamp from the rear side until the
main is securely fit into the panel.
Set time
Lock
Use (any of 3) to select
set time LOCK & UNLOCK
Default : UNLOCK
Config.
Lock
Use (any of 3) to select
config. LOCK & UNLOCK
Default : UNLOCK
The unit will auto exit lock mode after 30sec. of key inactivity or by
pressing + ( LCK ) keys continuously for 3sec. to exit the function.
Doc. Name : Operating/1112/XT546/246/346
OP288-V03 (Page 1 of 2)
Set key
Output
Modes
Time
Range
Note : The decimal Point of 3rd digit
blinks till correct Lock code entered.
Use key [any of 3] to scroll
through the various modes.
Default : ON Delay
Use key [any of 3] to scroll
through the various time range.
Default : 99.9sec
The unit will auto exit
reset mode after 1sec.
TO PROGRAM SET VALUE Note : Press
key to change the
set value. The corresponding digit
will increment from 0 to 9 and then will roll over back to 0.
Press key to store set value
Only if mode selected is on delay / Interval
NOTE : Press key to store set value. Decimal point of 3rd digit
blink still the storage of set value
Set 3rd digit
Set 2nd digit
t
t
t
t
Start
Reset
Output Cyclic ON
t1
t2
t1
t2
t1
t2
t2
t1
t2
t1
t2
t1
Typical application of Continuous start and reset in On delay mode :
t : Set time
Supply
Start
Reset
Output On delay
Use key [any of 3] to
select yes or no
Default : Yes
NOTE : Press key to store set value. Decimal point of 3 digit
blinks till the storage of set value
Power
on reset
Use key [any of 3] to
select yes or no
Default : NO
Set 3rd digit
Front
panel
reset
t
t
Typical application of Gate start
Supply
rd
NOTE : If the set value is 000 then timer must hold (not work).
All indications will be OFF.
The unit will auto exit set value mode after 30sec. of key inactivity
USER GUIDE
t
Output Cyclic OFF
keys to register and move to next parameter
Set 2nd digit
Set 1st digit
NOTE : Press
t
Output Interval
Supply
Start
Use key [any of 3] to
select yes or no
Default : NO
Start
Output ON Delay
t1 : ON time ;
t2 : OFF time
Use key [any of 3] to
select gate or pulse.
Default : Gate
Default
Supply
t : Set time
2. Cyclic ON first, Cyclic OFF first modes :
Set 1st digit
! Use key [any of 3] to scroll
through the various ranges.
! In Cyclic ON function, also
first OFF time is set and then
ON time is set.
! H, M, S indication will indicate
the time range.
1. On delay, Interval modes :
Reset
Only if mode selected is cyclic
NOTE : This
parameter is
prompted
only if mode
selected is
cyclic.
MODE OF OPERATION
Reset
Set 3rd digit
Prompt only if configuration Lock
enabled in PROTECTION LEVEL
Lock code = 85 [Fixed]
NOTE : Press + (RST) key
together continuously for
5sec. to enter into function.
Set 2nd digit
The unit will auto exit program mode after 30sec. of key inactivity
or by pressing
+ (PROG) key together continuously for 3sec.
RESET METHOD
Set 1st digit
CONFIGURATION INSTRUCTION
1. Enter configuration by pressing the key + (PROG) key together
for 3 sec.
2. Scroll various function ranges by pressing key(any of 3)
3. Scroll various parameter by pressing the
key.
START : Pulse / Gate
A) Pulse : Timing starts on momentary closure of switch connected
between START and COMMON terminals.
B) Gate : Timing starts at power on. When the START and COMMON
terminal is closed timing freezes and it resumes only when
the shorting is opened.
Gate
th = hold time ;
t1 + t2 = t
Reset
(set time)
Output On delay
t
t1
th
t2
( Specifications are subject to change, since development is a continuous process )
Selec Controls Pvt. Ltd.
Tel. No. : +91-22-40394200 / 40394202
Fax No. : +91-22-28471733 I Toll free : 1800 227 353
Website: www.selec.com
I Email : [email protected]
Doc. Name : Operating/1112/XT546/246/346
OP288-V03 (Page 2 of 2)