Recommended Encoder And Its Wiring - Omron M1 Series User Manual

2 Design
Multifunction Output Terminals and Programmable Controller Con-
nection
 Sink logic
 Source logic
2-3-6

Recommended Encoder and Its Wiring

For the pulse train input function of the 3G3M1 Series inverter, be sure to use a complementary output
type encoder.
In addition, for encoder cable connection, always use a shielded cable and connect it to the DIC termi-
nal of the inverter's control circuit terminal block.
If an open collector output encoder is used, the inverter may not recognize the rotation in the forward
or reverse direction. This is because, as the length of the encoder cable increases, its stray
2-54
+24
DI1 to DI7
DIC
Output unit
Inverter
Photocoupler Current flow
55 to
70 V
Inverter
Photocoupler Current flow
55 to
70 V
Sink
Source
Photocoupler
Inverter
Input unit
DO1
Sink input
DO2
DOC
Input unit
DO1
DO2
Source input
DOC
M1 Series Standard Type User's Manual (I669)