ABB DriveIT ACH550-UH - Dual Setpoint with PID

ACH550 User’s Manual 47
Start-Up
Dual Setpoint with PID
This macro configures for dual setpoint PID applications, where activating digital
input 3 (DI3) changes the process PID controller’s setpoint to another value. When
using direct speed reference in AUTO mode or process PID, see "General
Considerations" on page 35. Set process PID setpoints (internal to the drive) using
parameters 4011 (
SET1) and 4111 (SET2).
Parameters Changed Relative to HVAC Default
Parameter Value
Parameter Value
9902 APPLIC MACRO 11 (DUAL SETPNT) 4010 SETPOINT SEL 19 (INTERNAL)
1201
CONST SPEED SEL 0 (NOT SEL) 4011 INTERNAL SETPNT 50.0%
1401
RELAY OUTPUT 17 (STARTED) 4027 PID 1 PARAM SET 3 (DI3)
1601
RUN ENABLE 2 (DI2) 4110 SETPOINT SEL 19 (INTERNAL)
1609
START ENABLE 25 (DI5) 4111 INTERNAL SETPNT 100.0%
3207
SUPERV 3 PARAM 0103 (OUTPUT FREQ)
1SCR
2AI1
3AGND
410V
5AI2
6AGND
7AO1
8AO2
9AGND
10 24V
11 GND
12 DCOM1
13 DI1
14 DI2
15 DI3
16 DI4
17 DI5
18 DI6
19 RO1C
20 RO1A
21 RO1B
22 RO2C
23 RO2A
24 RO2B
25 RO3C
26 RO3A
27 RO3B
X1
+
mA
mA
External reference 0(2)…10 V or 0(4)…20 mA
Reference voltage 10 VDC
Output frequency: 0(4)…20 mA
Start/Stop: Activate to start drive
Run permissive: Deactivate to stop drive (P 1601)
Setpoint selection: Activate to select Set2
Safety interlock 1: Deactivate to stop drive (P 1608)
Safety interlock 2: Deactivate to stop drive (P 1609)
Relay output 1 (P 1401)
Default operation: Started =>19 connected to 21
Relay output 2 (P 1402)
Default operation: Running =>22 connected to 24
Relay output 3 (P 1403)
Default operation: Fault (-1) =>25 connected to 27
Output current: 0(4)…20 mA
Not configured
Analog input circuit common
PID feedback: 0(2)…10 V or 0(4)…20 mA
Analog output circuit common
Auxiliary voltage output +24 VDC
Common for DI return signals.
Digital input common for all
Signal cable shield (screen)
Analog input circuit common
(Fault => 25 connected to 26)
J1
AI1: 0(2)
…10 V
AI2: 0(4)
…20 mA
ON
ON
Jumper Settings
+