Specifications
RU77 - 4096A□B
RU77 - 4096A□D
RU77 - 4096A□A
Model name
Enclosed type
Output wave number
RU77
Accuracy(at 20℃)
4,096 waves/revolution
Through hole diameter
φ20 mm
±2.5"
Output signal
Absolute serial bidirectional signal, compliant with EIA-485
FANUC
Compatible controllers
-4096
Maximum resolution
• Magnetic system enables use even in environments
with condensation, oil, and other adverse conditions
supporting manufacturer without the requirement of an amplifier
Mitsubishi Electric
25bit (33,554,432 pulse/revolution)
2,000 min-1
Maximum mechanical revolutions
3,000 min-1
Functional safety
―
Legal compliance
FCC Part15 Subpart B Class A and ICES-003 Class A Digital Device
and EN55011 Gp 1 Class A, EN 61000-6-2 Safety standards not applicable (60 V DC or less)
0 to +60℃
Storage temperature range
-10 to +60℃
150 m/s2 (50 Hz to 2000 Hz)
Vibration resistance
1,000 m/s2 (11 ms)
Impact resistance
FANUC
Mitsubishi Electric
Yaskawa Electric
IP65
Power supply voltage range
DC4.75-5.25 V (with connecting terminal)
200mA（at 120Ω termination）
9.4×10-5 kgm2 or less
Moment of inertia
Starting torque (at 20°C)
0.1 Nm or less
Mass
Approx. 1.2kg or less
Standard compatible cable
CE28-***
Maximum cable length
15 m
SR84
4-M3 depth 5
SR74
Protective design grade
Consumption current
Dimensions
21bit (2,097,152 pulse/revolution)
Maximum response revolutions
Operating temperature range
• Internal coupling allows for design and mounting flexibility
Yaskawa Electric
SR67A
• Enables direct communication using the protocol of each
RU77 - 4096A□F
0
φ10
φ110
□
92
4-φ3 ±0.1 depth 7
＊CCW
Details of model designation
Air injection hole (M5)
Scale
［□］Resolution
RU77 - 4096A□△
4 - Mounting hole for M4
(when installing from top)
φ35
SR27A
Absolute angle encoder
＊When scale axis rotates counter clockwise, addition is performed.
Resolution
Approx. 2.5 /1,000
Approx. 1 /1,000
Approx. 7 /10,000
Approx. 3.5 /10,000
Approx. 2 /10,000
Approx. 1 /10,000
Approx. 4.5 /100,000
Approx. 2 /100,000
Approx. 1 /100,000
［△］
Communication protocol
Number of pulses/revolution
131,072
262,144
524,288
1,048,576
2,097,152
4,194,304
8,388,608
16,777,216
33,554,432
Number of partitions
1/32
1/64
1/128
1/256
1/512
1/1,024
1/2,048
1/4,096
1/8,192
Type
A
B
D
F
NC manufacturer
FANUC
Mitsubishi Electric
Mitsubishi Electric
Yaskawa Electric
Number of wires
4-wire
2-wire
4-wire
2-wire
RS97-1024E
Type
A
B
C
D
E
F
G
H
J
*Yaskawa Electric: D and E only
Cable length 1000
＋100
0
Cable
44
C E 2 8 - □□□○※
Reference mark
φ18
φ5.6
R10(Without repeated bending)
R50(With repeated bending)
(Example)
Type
070
090
130
Installation
Dimentions
+0.016
φ30H6（ ）
0
Installation nut
(Obtained by the customer)
(M20 1)
（12）
0
32 -1
Φ20g6
-0.007
（ ）
-0.020
0.01 A
Type
Without With
Without L
M
P
E
Q
F
G
J
K
Specification
Earth wire
Open-end
10P made by Sumitomo 3M
20P made by Honda Tsushin Kogyo
6P made by molex®
10P (JB1) made by Japan Aviation Electronics Industry
10P (JN1) made by Japan Aviation Electronics Industry
Remarks
Standard
Mitsubishi NC, J3 (A/B/Reference)
Mitsubishi NC, J3 (INC serial, ABS)
FANUC (A/B/Reference)
FANUC (INC serial, ABS)
YASKAWA Electric (INC serial, ABS)
RU77 cable extention (standard)
RU77 cable extention (standard)
a
a
b
a
b
CE28-100NF
b
CE28-050NJ
CE28-100NF
CE28-050NF
example）
Cable length 5ｍ
Without conduit
Controller side connector
10P (JB1) made by Japan
Aviation Electronic Industry
example）
Cable length 10ｍ
Without conduit
Controller side connector
made by
Honda Tsushin Kogyo
Scale side connector
JB1D10PL2 made by Japan
Aviation Electronics Industry
example）
Cable length 5ｍ
Without conduit
Controller side connector
20P made by
Honda Tsushin Kogyo
0.1 A
0.02 A
5
30.1
42
30
4 M4
10
40
4-M6
33±0.1
Φ0.1 A
Conduit
With conduit (standard)
Without conduit
【※】
Controller side connector
CE28-050NF
RU97-2048
+0.035
Φ85 H7
（ ）
0
(when installing from bottom)
［○］
Conduit
Type
C
N
Φ100
Cable length
7m
9m
13m
CE28-050NJ
RS97-1024N
Written by flush right,
indication in “10cm” units,
up to 14m,1m pitch
Scale side
10ﾟ
［□□□］Cable length
Controller side
This is the position at which the
absolute position is zero.
3±0.05
-0.036
φ85f7（ ）
-0.071
A
A Bearing rotation center
Φ29 +4
-1
RU77-4096
+0.013
φ20H6（ ）
0
Unit: mm
24
25