ABB ACS800-U7 Hardware Manual page 83

Isolation and grounding diagram
X20
1 VREF-
2 AGND
X21
1 VREF+
2 AGND
3 AI1+
4 AI1-
5 AI2+
6 AI2-
7 AI3+
8 AI3-
9 AO1+
10 AO1-
11 AO2+
12 AO2-
X22
1 DI1
2 DI2
3 DI3
4 DI4
9 DGND1
5 DI5
6 DI6
7 +24VD
8 +24VD
11 DIIL
10 DGND2
X23
1 +24 V
2 GND
X25
1 RO1
2 RO1
3 RO1
X26
1 RO2
2 RO2
3 RO2
X27
1 RO3
2 RO3
3 RO3
Ground
(Test voltage: 500 V AC)
Common mode
voltage between
channels ±15 V
J1
(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 (insulation
voltage 50 V).
Motor control and I/O board (RMIO)
83