Dual-Channel Connection With Internal Power Supply - ABB ACS880-37LC Hardware Manual

186 The Safe torque off function
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Dual-channel connection with internal power supply

1
2
1 Inverter control unit
2 Inverter module(s)
3 To remaining inverter modules
K Activation switch
XSTO
OUT
+24 V
SGND
IN1
IN2
XSTO OUT
IN1
SGND
IN2
SGND
STO IN (X52)
24VDC CH1
GND CH1
24VDC CH2
GND CH2
FE
STO OUT (X51)
24VDC CH1
GND CH1
24VDC CH2
GND CH2
FE
STO IN (X52)
24VDC CH1
GND CH1
24VDC CH2
GND CH2
FE
STO OUT (X51)
24VDC CH1
GND CH1
24VDC CH2
GND CH2
FE
3
K
2