Mitsubishi Electric MELSEC-LD77MS2 User Manual page 101

When using the external
power supply (Recommended)
Simple Motion
module
HAH (A+)
HAL (A-)
HBH (B+)
HBL (B-)
5 V
SG
Shield
FG
Twisted pair
(4) Wiring example for manual pulse generator/incremental
synchronous encoder
Wire the manual pulse generator/incremental synchronous encoder of differential
output type and voltage output type/open-collector type as follows.
Switch the input type of the Simple Motion module by "
generator/Incremental synchronous encoder input type selection". It is
recommended to use the external 5 V power supply (5 V DC±5%) for the power
supply of the manual pulse generator/incremental synchronous encoder. When
using the external power supply, do not connect with the 5 V terminal of the
Simple Motion module. When using the internal power supply, connect the 5 V
terminal of the Simple Motion module and the 5 V (+) of the manual pulse
generator/incremental synchronous encoder.
In either case, connect the 0 V (-) of the manual pulse generator/incremental
synchronous encoder and the SG of the Simple Motion module. Do not use the
5 V terminal of the Simple Motion module except for connecting the manual pulse
generator/incremental synchronous encoder. It may cause a failure. Also, do not
connect the manual pulse generator/incremental synchronous encoder whose
current consumption exceeds 200 mA.
(a) Manual pulse generator/Incremental synchronous encoder of differential
output type
Manual pulse generator/
Incremental synchronous
encoder
HAH (A+)
HAL (A-)
HBH (B+)
HBL (B-)
5 V
0 V
External 5 V
power supply
FG
Chapter 3 Specifications and Functions
When using the internal
Simple Motion
module
HAH (A+)
HAL (A-)
HBH (B+)
HBL (B-)
5 V
SG
3 - 31
Manual pulse
Pr.89
power supply
Manual pulse generator/
Incremental synchronous
encoder
HAH
HAL
HBH
HBL
Shield
FG
FG
(A+)
(A-)
(B+)
(B-)
5 V
0 V