ACS 400 User’s Manual 59
Application Macro Motor Potentiometer
This macro provides a cost-effective interface for PLCs that vary the speed of the drive using only
digital signals.
The value of parameter 9902 is 4 (
MOTOR POT).
*Note!
• If both DI 3 and DI 4 are active or inactive, reference is kept stable.
• Reference is stored during stop or power down condition.
• Analog reference is not followed when motor potentiometer is selected.
Motor potentiometer parameter values:
Input signals Output signals Jumper Setting
• Start, stop and direction
(DI1,2)
• An. output AO: Frequency
• Reference up (DI3) • Relay output 1: Fault
• Reference down (DI4) • Relay output 2: Running
• Preset speed selection (DI5)
1001
EXT 1 COMMANDS 2 (DI1,2) 1402 RELAY OUTPUT 22 (RUN)
1002
EXT 2 COMMANDS 0 (NOT SEL) 1503 AO CONTENT MAX 60 Hz
1003
DIRECTION 3 (REQUEST) 1601 RUN ENABLE 0 (NOT SEL)
1102
EXT1/EXT2 SEL 6 (EXT1) 1604 FAULT RESET SEL 0 (KEYPAD)
1103
EXT REF1 SELECT 6 (DI3U,4D) 2008 MAXIMUM FREQ 60 Hz
1105
EXT REF1 MAX 60 Hz 2105 PREMAGN SEL 0 (NOT SEL)
1106
EXT REF2 SELECT 0 (KEYPAD) 2201 ACC/DEC 1/2 SEL 0 (NOT SEL)
1201
CONST SPEED SEL 5 (DI5) 4001 PID GAIN 1.0
1401
RELAY OUTPUT 13 (FAULT (-1)) 4002 PID INTEG TIME 60 s
External Reference 1: 0...10 V
Reference voltage 10 VDC
Not used
Output frequency 0...20 mA <=> 0...50 Hz
+24 VDC
Start/Stop: Activate to start.
Forward/Reverse: Activate to reverse rotation direction
Reference up: Activate to increase reference*
Reference down: Activate to decrease reference*
Constant speed 1
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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