maxon motor
EPOS Positioning Controller
EPOS 70/10 Hardware Reference
7.5
Encoder connector (J4)
It is necessary that an encoder with a built-in line driver is used
(3-channel recommended).
The standard encoder adjustment (original packing) refers to a
500-count per turn encoder. For other encoders the adjustment must
be modified with the software.
Encoder supply voltage
+5 VDC
Max. encoder supply current
100 mA
Min. differential Input voltage
± 200 mV
Line
receiver
(internal)
EIA standard RS-422
Max. encoder input frequency
1 MHz
Figure 11: Encoder input circuit sketch
Figure 12: Encoder connector (J4)
Pin
No.
Signal Description
1
n.c. Not
connected
2
+5 VDC / 100 mA
Encoder supply voltage
3
GND Ground
4
n.c. Not
connected
5
Channel A\
Channel A complement
6
Channel A
Channel A
7
Channel B\
Channel B complement
8
Channel B
Channel B
9
Channel I\
Index complement
10
Channel
I
Index
Encoder pin out suits for example to:
- maxon digital MR-Encoder type ML, L all with Line Driver
- maxon digital encoder HEDL 55__ with Line Driver RS 422
Accessories: EPOS encoder cable
maxon order number:
275934
Notes: Suitable connector:
DIN 41651 Plug, pitch 2.54 mm,
10 poles, plug strain relief
13
maxon motor control
December 2008 Edition / document number 752380-04 / subject to change
