ABB ACS800-U4 Hardware Manual page 72

72
Isolation and grounding diagram
X20
1
2
X21
1
2
3
4
5
6
7
8
9
10
11
12
X22
1
2
3
4
5
6
7
8
9
10
11
X23
1
2
X25
1
2
3
X26
1
2
3
X27
1
2
3
Ground
Motor control and I/O board (RMIO)
Galvanic isolation
VREF
GND
VREF
GND
*
AI1+
AI1-
AI2+
AI2-
AI3+
AI3-
AO1+
AO1-
AO2+
AO2-
DI1
DI2
DI3
DI4
DI5
DI6
+24V
+24V
DGND
J1
DGND
DIIL
+24 V
GND
RO1
RO1
RO1
RO2
RO2
RO2
RO3
RO3
Isolation test
RO3
voltage 4 kVAC
Isolation test
voltage 500 VAC
* Common mode
voltage between
channels +15 V
Jumper J1:
Connected (default)
Not connected
or
(isolation voltage below 50 V)