ABB ACS880-37LC-0390A-7, Hardware Manual, Page: 120 / 242

Default I/O diagram of the supply control unit
The diagram below shows the default I/O connections on the supply control unit (A51), and
describes the use of the connections in the supply unit. Under normal circumstances, the
factory-made wiring should not be changed.
The wire size accepted by all screw terminals (for both stranded and solid wire) is
0.5 … 2.5 mm
2
(22 … 12 AWG). The tightening torque is 0.45 N·m (4 lbf·in).
Description Terminal
Drive-to-drive link XD2D
Not in use by default
B 1
1
2
3
4
A 2
BGND 3
Shield 4
Drive-to-drive link termination switch
1)
D2D.TERM
ON
OFF
RS485 connection X485
Cooling fan monitoring (CIO module)
B 5
5
6
7
8
A 6
BGND 7
Shield 8
Relay outputs XRO1, XRO2, XRO3
XRO1: Charging
2)
(Energized = Closes
charging contactor.)
250 V AC / 30 V DC, 2 A
Norm. closed NC 11
22
23
31
32
11
12
13
21
33
Common COM 12
Norm. open NO 13
XRO2: Fault (-1)
3)
(Energized = Indicates
no fault.)
250 V AC / 30 V DC, 2 A
Norm. closed NC 21
Common COM 22
Norm. open NO 23
XRO3: MCB ctrl
2)
(Energized = Closes
main contactor/breaker.)
250 V AC / 30 V DC, 2 A
Norm. closed NC 31
Common COM 32
Norm. open NO 33
Safe torque off
4)
XSTO, XSTO OUT
XSTO: Factory connection. Both circuits (power module, control unit) must be
closed for the supply unit to start (IN1 and IN2 must be connected to OUT).
OUT 1
5
6
7
8
1
2
3
4
SGND 2
IN1 3
IN2 4
XSTO OUT: Not in use.
IN1 5
SGND 6
IN2 7
SGND 8
Digital inputs XDI
120 Control units of the drive