ABB ACS800-37-0170-3 - Page 100

Motor control and I/O board (RMIO)
100
Isolation and grounding diagram
X20
1VREF-
2AGND
X21
1VREF+
2AGND
3AI1+
4AI1-
5AI2+
6AI2-
7AI3+
8AI3-
9AO1+
10 AO1-
11 AO2+
12 AO2-
X22
1DI1
2DI2
3DI3
4DI4
9 DGND1
5DI5
6DI6
7+24VD
8+24VD
11 DIIL
10 DGND2
X23
1+24 V
2GND
X25
1RO1
2RO1
3RO1
X26
1RO2
2RO2
3RO2
X27
1RO3
2RO3
3RO3
Common mode
voltage between
channels ±15 V
J1
(Test voltage: 500 V AC)
or
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
are separate (isolation
voltage 50 V).
Ground
(Test voltage:
4kVAC)