ABB ACS800 Hardware Manual page 64

64
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
9
5
6
7
8
11
10
X23
1
2
X25
1
2
3
X26
1
2
3
X27
1
2
3
Ground
Motor control and I/O board (RMIO)
(Test voltage: 500 V AC)
VREF-
AGND
VREF+
AGND
AI1+
Common mode
AI1-
voltage between
AI2+
channels ±15 V
AI2-
AI3+
AI3-
AO1+
AO1-
AO2+
AO2-
DI1
DI2
DI3
DI4
DGND1
DI5
J1
DI6
+24VD
+24VD
DIIL
DGND2
+24 V
GND
RO1
RO1
RO1
RO2
RO2
RO2
RO3
RO3
RO3
(Test voltage:
4 kV AC)
Jumper J1 settings:
All digital inputs share a common
ground. This is the default setting.
Grounds of input groups
DI1...DI4 and DI5/DI6/DIIL
or
are separate (isolation
voltage 50 V).