ABB ACH550-01 User Manual page 102

ACH550-01 User's Manual
1...10 kohm
1
Not available if PID is activated
2
Disable/enable with parameter 1608
3
The sensor for AI2 is powered externally (not shown in the figure). See the manufacturer's
instructions. To use sensors supplied by the drive auxiliary voltage output, see page 124.
Note: The drive starts only if possible protection functions (Run enable or Start enable 1 and
2) are activated from I/O or disabled with parameters.
Application macros and wiring
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HVAC default
for typical BMS applications
1 SCR Signal cable shield (screen)
2 AI1 External reference 1: 0(2)...10 V or 0(4)...20 mA
3 AGND Analogue input circuit common
4 10V Reference voltage +10 V DC
5 AI2 Actual signal 1: 0(2)...10 V or 0(4)...20 mA
6 AGND Analogue input circuit common
7 AO1 Output frequency: 0(4)...20 mA
8 AO2 Output current: 0(4)...20 mA
9 AGND Analogue output circuit common
10 24V Auxiliary voltage output +24 V DC
11 GND Common for DI return signals
12 DCOM Digital input common for all
13 DI1 Start/Stop: Activation starts the drive
14 DI2 Not used
15 DI3 Constant speed 1 (par. 1202)
16 DI4 Start enable 1: Deactivation stops the drive
17 DI5 Not used
18 DI6 Not used
19 RO1C Relay output 1 (par. 1401)
20 RO1A Default operation
Ready => 19 connected to 21
21 RO1B
22 RO2C Relay output 2 (par. 1402)
23 RO2A Default operation
Running => 22 connected to 24
24 RO2B
25 RO3C Relay output 3 (par. 1403)
26 RO3A Default operation
Fault (-1) => 25 connected to 27
27 RO3B
3
1
2
97