External Wiring - Mitsubishi Electric QD62E User Manual

5.2

External Wiring

1) Wiring example of a module and an encoder
a) Wiring example with an open collector output type encoder (24 V DC)
QD62,QD62E
Phase A
Phase B
External
power
supply
POINT
When wiring the QD62, QD62E and the encoder, separate the power
supply cable and signal cable.
The following diagram shows an example.
[Wiring example]
QD62(E) 24 V
Phase ABCOM
A
External
24 V DC
power
0 V
supply
[Incorrect wiring example]
QD62(E) 24 V
Phase ABCOM
A
External
24 V DC
power
0 V
supply
Shielded twisted pair cable
24 V
A20 (A13)
12 V
B20(B13)
5 V
A19(A12)
ABCOM
B19(B12)
Shielded twisted pair cable
24 V
A18(A11)
12 V
B18(B11)
5 V
A17(A10)
24 V DC
0 V
OUT
+24 V
0 V
E
+24 V
8
Shield
Shield
Encoder
OUT
The current flows
through the shielded
twisted pair cable in
Encoder
the same direction, so
0 V
there is no cancelling
effect.
E
This makes it more
prone to electromagnetic
induction.
Encoder
OUT
+24 V
E
OUT
+24 V
E
+24 V
0 V