ACS 400 User’s Manual 61
Application Macro PID Control
This macro is intended for use with different closed-loop control systems such as pressure control,
flow control, etc.
The value of parameter 9902 is 6 (
PID CTRL).
Note!
* Constant speed is not considered while in PID control (PID).
Note! Parameter 2107
START INHIBIT should be 0 (OFF).
PID control parameters (group 40) do not belong to the Basic parameter set.
PID Control parameter values:
Input signals Output signals Jumper Setting
• Start/stop (DI1,5) • An. output AO: Frequency
• Analog reference (AI1) • Relay output 1: Fault
• Actual value (AI2) • Relay output 2: Running
• Control location selection (DI2)
• Constant speed (DI3)
• Run enable (DI4)
1001
EXT 1 COMMANDS 1 (DI1) 1402 RELAY OUTPUT 22 (RUN)
1002
EXT 2 COMMANDS 6 (DI5) 1503 AO CONTENT MAX 60 Hz
1003
DIRECTION 1 (FORWARD) 1601 RUN ENABLE 4 (DI4)
1102
EXT1/EXT2 SEL 2 (DI2) 1604 FAULT RESET SEL 0 (KEYPAD)
1103
EXT REF1 SELECT 1 (AI1) 2008 MAXIMUM FREQ 60 Hz
1105
EXT REF1 MAX 60 Hz 2105 PREMAGN SEL 0 (NOT SEL)
1106
EXT REF2 SELECT 1 (AI1) 2201 ACC/DEC 1/2 SEL 0 (NOT SEL)
1201
CONST SPEED SEL 3 (DI3) 4001 PID GAIN 1.0
1401
RELAY OUTPUT 13 (FAULT(-1)) 4002 PID INTEG TIME 60 s
EXT1 (Manual) or EXT2 (PID) reference: 0...10 V
Reference voltage 10 VDC
Actual signal; 0...20 mA (PID)
Output frequency 0...20 mA <=> 0...50 Hz
+24 VDC
Start/Stop: Activate to start ACS 400 (Manual).
EXT1/EXT2 Selection: Activate to select PID control
Constant speed 1: not used if PID control*
Run enable: deactivation always stops ACS 400
Start/Stop: Activate to start ACS 400 (PID)
Relay output 1, programmable
Default operation: Fault => 17 connected to 18
Relay output 2, programmable
Default operation: Running => 20 connected to 22
http://nicontrols.com
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