148 Control unit
ABB DA501
No. Description
1. I/O bus
2. Terminal number and signal name
3. 16 yellow LEDs show the signal state of digital inputs DI0...DI15
4. 4 yellow LEDs show the signal state of analog inputs AI0...AI3
5. 2 yellow LEDs show the signal state of analog outputs AO0 and AO1
6. 8 yellow LEDs show the signal state of configurable digital inputs and outputs DC16...DC23
7. 1 green LED shows the status of the process supply voltage UP
8. 4 red LEDs show errors
9. Type label
10. Terminal unit
11. DIN rail
12. Sign for the XC version
1
2
3
4
5
7
6
8
9
10
11
12
3