Yaskawa MP940 - Manual (Page 213)

5.6 SERVOPACK I/O Signals
5-41
5
5.6.4 Interface Circuits
This section shows examples of SERVOPACK I/O signal connection to the host controller.
„ Interface for Reference Input Circuits
Analog Input Circuit
Analog signals are either speed or torque reference signals at the impedance below.
• Speed reference input: About 14 k
• Torque reference input: About 14 k
The maximum allowable voltages for input signals is ± 12 V.
„ Sequence Input Circuit Interface
The sequence input circuit interface connects through a relay or open-collector transistor cir-
cuit. Select a low-current relay otherwise a faulty contact will result.
Ω
Ω
12V
25HP-10B
2kΩ
3
1
2
1000：1
0V
SG
SERVOPACK
1.8 k Ω (1/2 W)min.
V-REF or
T-REF
Approx.
14 k Ω
3.3kΩ
+24VIN
Servo amp
24 VDC
50 mA min.
/S-ON, etc.
3.3kΩ
+24VIN
Servo amp
24 VDC
50 mA min.
/S-ON, etc.