ABB ECA06 - Page 36

2.4 Electrical Installation Chapter 2: Installation
36 493-0736-11 (6-2)
Digital Inputs
All digital input signals are connected via opto-couplers. The supply may be taken
from the controller or from an external current source.
Figure 20 Digital Input Internal and External Supplies.
Digital Input External Supply
DI1
z20
DI2
z18
DI3
z16
DI COM
z12
DI4
z14
24V
Digital Input Internal Supply
DI2
DI3
DI4
DI COM
z20
z18
z16
z14
z12
+24V
z10
d16
d2
z2
d24
signal ground
DI1