ABB ACS880-204 Hardware Manual page 302

302 The control units
Ground isolation diagram (ZCU)
+24VI
GND
+VREF
-VREF
AGND
AI1+
AI1-
AI2+
AI2-
AO1
AGND
AO2
AGND
B
A
BGND
XRO1, XRO2, XRO3
NC
COM
NO
NC
COM
NO
NC
COM
NO
DIIL
+24VD
DICOM
+24VD
DIOGND
DIO1
DIO2
DI1
DI2
DI3
DI4
DI5
DI6
OUT1
GND
IN1
IN2
*Ground selector (J6) settings
(ZCU-14)
All digital inputs share a common ground (DICOM connected to DIOGND). This is the default setting.
(ZCU-14)
Ground of digital inputs DI1...DI5 and DIIL (DICOM) is isolated from DIO signal ground (DIOGND).
Isolation voltage 50 V.
XPOW
1
2
XAI
1
2
3
4
Common mode voltage between
5
6 channels +30 V
7
XAO
1
2
3
4
XD2D
1
2
3
1
2
3
1
2
3
1
2
3
XD24
1
2
3
4
5
XDIO
1
2
XDI
*
1
2
3
4
5
6
XSTO
1
2
3
4
Ground