ABB ACQ580-07 - Page 48

Connection of external Safe torque off
button
X96924VDC power supply and buffer with
emergency stop options (+Q951 and
+Q963), also with line contactor option
(+F250).
T22,
C22
X251, X4, X6, X56, X53, X51, X55, X18 and X19: for internal use.
Terminals for

1
2
3
4
PE
X250
1
2
3
44
3
2
1
PE
PE
1
2
3
4
5
6
- X289
1
2
3
4
5
6
6
5
4
3
2
1
Auxiliary contacts of line contactor (option
+F250)
X250
Auxiliary contacts of molded case circuit
breaker (option +F289)
X289
Push buttons for emergency stop option +Q951
or +Q963. See section Connecting the emer-
gency stop push buttons (options +Q951 and
+Q963) (page 132).
X951
External STO customer connection for safety
option +Q951 or +Q963. See section Connect-
ing the Safe torque off circuit (page 133).
X969
44 Operation principle and hardware description