Mitsubishi Electric MELSECQ Series User Manual page 51

4
PROCEDURES AND SETTINGS BEFORE
OPERATION
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POINT
When wiring the QD63P6 and an encoder, separate the power supply cable and
signal line.
The following diagram shows an example of wiring with Phase A. (Wire Phase B
as well).
[Wiring example]
QD63P6 Pulse
input -
Phase A
Pulse
input +
12/24 VDC
External
power supply
0 V
[Incorrect wiring example]
QD63P6
Pulse
input -
Phase A
Pulse
input +
12/24 VDC
External
power supply
0 V
Figure 4.10 Incorrect wiring example
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Shielded twisted pair cable
Shield
Figure 4.9 Wiring example
Shielded twisted pair cable
Shield
4.4.2 Example of wiring the module and an encoder
OUT
+12/24 V
Encoder
0 V
E
OUT
Since the current
+12/24 V
through the shielded
twisted pair cable flows
Encoder
0 V
in the same direction,
canceling effect does
E
not work, which results
in susceptibility to
electromagnetic
induction.
4.4 Wiring
1
2
3
4
5
6
7
8
4
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