ABB ACS880-04 - Page 355

The Safe torque off function 355
 Frame n×R8i inverter unit (internal power supply)
+24 V
OUT1
SGND
IN1
IN2
XSTO
K
IN1
SGND
XSTO OUT
IN2
SGND
24VDC CH1
GND CH1
STO IN (X52)
24VDC CH2
FE
To next
inverter module
GND CH2
24VDC CH1
GND CH1
STO OUT (X51)
24VDC CH2
FE
GND CH2
24VDC CH1
GND CH1
STO IN (X52)
24VDC CH2
FE
GND CH2
24VDC CH1
GND CH1
STO OUT (X51)
24VDC CH2
FE
GND CH2
Inverter module
Inverter module
Control unit