ABB ACS880-37 Hardware Manual page 133

Ground isolation diagram
+24VI
GND
+24VI
GND
+VREF
-VREF
AGND
AI1+
AI1-
AI2+
AI2-
AO1
AGND
AO2
AGND
B
A
BGND
SHIELD
XRO1, XRO2, XRO3
NC
COM
NO
NC
COM
NO
NC
COM
NO
+24VD
DICOM
+24VD
DIOGND
DIO1
DIO2
DIOGND
DIOGND
DI1
DI2
DI3
DI4
DI5
DI6
DIIL
OUT1
SGND
IN1
IN2
XPOW
1
2
3
4
XAI
1
2
3
4
Common mode voltage between
5
each AI input and AGND is
6
+30 V
7
XAO
1
2
3
4
XD2D
1
2
3
4
11
12
13
21
22
23
31
32
33
XD24
1
2
3
4
XDIO
1
2
3
4
XDI
*
1
2
3
4
5
6
7
XSTO
1
2
3
4
Control units of the drive 133
*Ground selector (DICOM = DIOGND)
settings
All digital inputs and outputs share a
common ground.
Ground of digital inputs DI1...DI5 and
DIIL (DICOM) is isolated from the
DIO signal ground (DIOGND) (insulation
voltage 50 V).
Ground