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550-UH User's Manual
Dual Setpoint with PID macro
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
considerations
parameters 4011 (
mA
9902
1201
1401
1601
1609
on page 1-49. Set process PID setpoints (internal to the drive) using
1) and 4111 (
SET
X1
Signal cable shield (screen)
1
SCR
External reference 0(2)...10 V or 0(4)...20 mA
2
AI1
+
Analog input circuit common
3
AGND
Reference voltage 10 VDC
4
10V
5
AI2
PID feedback: 0(2)...10 V or 0(4)...20 mA
+
6
AGND
Analog input circuit common
Output frequency: 0(4)...20 mA
7
AO1
mA
8
AO2
Output current: 0(4)...20 mA
9
AGND
Analog output circuit common
Auxiliary voltage output +24 VDC
10 24V
Common for DI return signals.
11 GND
Auxiliary voltage output common
12 DCOM
Start/Stop: Activate to start drive
13 DI1
Run permissive: Deactivate to stop drive (P 1601)
14 DI2
Setpoint selection: Activate to select Set2
15 DI3
Safety interlock 1: Deactivate to stop drive (P 1608)
16 DI4
Safety interlock 2: Deactivate to stop drive (P 1609)
17 DI5
Not configured
18 DI6
Relay output 1 (P 1401)
19 RO1C
Default operation: Started =>19 connected to 21
20 RO1A
21 RO1B
Relay output 2 (P 1402)
22 RO2C
Default operation: Running =>22 connected to 24
23 RO2A
24 RO2B
Relay output 3 (P 1403)
25 RO3C
Default operation: Fault (-1) =>25 connected to 27
26 RO3A
27 RO3B
Parameters Changed Relative to HVAC Default
Parameter
11 (
APPLIC MACRO
DUAL SETPPID
0 (
CONST SPEED SEL
NOT SEL
1
7 (
RELAY OUTPUT
STARTED
2 (
2)
RUN ENABLE
DI
2
5 (
5)
START ENABLE
DI
2).
SET
(Fault => 25 connected to 26)
Value
Parameter
)
4010
SET POINT SEL
)
4011
INTERNAL SETPNT
)
4027
PID
4110
SET POINT SEL
4111
INTERNAL SETPNT
General
J1
Jumper Settings
...
AI1: 0(4)
20 mA
...
AI2: 0(4)
20 mA
Value
19 (
INTERNAL
50.0%
1
3 (
3)
PARAM SET
DI
19 (
INTERNAL
100.0%
Application macros
1-61
ON
1
2
)
)
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