Mitsubishi Electric MELSEC-L Series LD40PD01 User Manual page 55

• For the wiring between the flexible high-speed I/O control module and an encoder, separate the power
supply cables and signal wires.
Flexible high-speed
COM
I/O control module
Pulse input
24V
Shielded twisted pair cable
External
24VDC
power
0V
supply
• Do not wire the module and an encoder as shown in the figure below. Because a current flows through a
shielded twisted pair cable in a single direction and the canceling effect disappears, the module is easy to
be affected by electromagnetic induction.
Flexible high-speed
COM
I/O control module
Pulse input
24V
24VDC
External power
supply
0V
6.4 Example of External Wiring Between the Flexible High-speed I/O Control Module and an Encoder
OUT
+24V
0V
E
OUT
+24V
Shielded twisted pair cable
0V
E
Encoder
Encoder
6 INSTALLATION AND EXTERNAL WIRING
6
53