ABB ACH580-31, Hardware Manual

Page: 137 / 284

Default I/O connection diagram
￭ Default I/O connection diagram
The default control connections for the HVAC default are shown below.
Description Term Connection
X1 Reference voltage and analog inputs and outputs
Signal cable shield (screen) SCR 1
1
2
3
4
5
6
7
8
9
1...10 kohm
Max.
500 ohm
6)
Output frequency/speed reference:
0…10 V 1) AI1 2
Analog input circuit common AGND 3
Reference voltage 10 V DC +10V 4
Actual feedback: 0…20 mA 1) AI2 5
Analog input circuit common AGND 6
Output frequency: 0…10 V AO1 7
Motor current: 0…20 mA AO2 8
Analog output circuit common AGND 9
X2 & X3 Aux. voltage output and programmable digital inputs
Aux. voltage 24 V DC, max.
250 mA 2) +24V 10
10
11
12
13
14
15
16
17
18
4)
5)
Aux. voltage output common DGND 11
Digital input common for all DCOM 12
Stop (0) / Start (1) DI1 13
Not configured DI2 14
Constant frequency/speed selection
3)
DI3 15
Start interlock 1 (1 = allow start) DI4 16
Not configured DI5 17
Not configured DI6 18
X6, X7, X8 Relay outputs
Damper control RO1C 19
19
20
21
22
23
24
25
26
27
Damper actuator
Run status
Fault status
250 V AC / 30 V DC
2 A
RO1A 20
RO1B 21
Running
250 V AC / 30 V DC
2 A RO2C 22
RO2A 23
RO2B 24
Fault (-1)
250 V AC / 30 V DC
2 A RO3C 25
RO3A 26
RO3B 27
X5 Embedded fieldbus
Control unit 137