I/O Interface Internal Circuit - Mitsubishi Electric MELSEC Q Series User Manual

3.5.4

I/O interface internal circuit

This section shows internal circuits of external device interfaces on the QD73A1 in schematic diagrams.
External wiring Pin No.
5VDC
5
24VDC
1
9
7
6
8
5VDC
1
24VDC
2
Load Load
3
5 to 24VDC
4
Servomotor, module,
or others
15
1k
to
1M
14
13
11
5
10
6
7
9
*1 When input impedance of the servo amplifier is low, analog output level may become low due to this resistance. If that
causes a problem, perform gain adjustment again with the servo amplifier being connected.
Internal circuit
Power supply
2.4k
Near-point dog signal (DOG)
2.4k
Stop signal (STOP)
2.4k
Upper limit signal (FLS)
2.4k
Lower limit signal (RLS)
Speed-position switching
2.4k
command signal (CHANGE)
Servo READY signal
(READY)
2.4k
Servo ON signal (SVON)
47
*1
Speed command signal
0V (analog GND)
5V
1k
Phase-A feedback pulse
1k SN75115
5V
1k
Phase-B feedback pulse
1k
5V
1k
Phase-Z feedback pulse
1k
0V
Analog GND
Signal name
Input a voltage of 5 to 24VDC.
-
-
If not using these signals, keep them on.
-
-
-
-
[For differential input]
Connect these terminals to the terminal/
connector for pulse output of an encoder.
CHAPTER 3 SPECIFICATIONS
Remark
45
3