Chapter 3: Keypad Operation and Quickstart
3–10
Example 2: Variable torque (e.g. fans, centrifugal pumps, etc.)
In this example, the AC drive needs to operate a motor that is connected to a centrifugal
pump. As in Example 1, we will make a list of the needs for the application in order to
decide which parameters need modifications.
Application Needs
•The AC drive must control a 208V, 3hp fan-cooled standard duty motor. The
AC drive model we will be using for this application is a GS3-23P0. An
example of the motor nameplate is shown below.
•The maximum speed for the motor is 3600 rpm.
•The motor should accelerate to maximum speed in 20 seconds.
•The motor should coast to stop when operation is terminated.
•The motor will be turning a centrifugal pump.
•The operation of the motor (start, stop, etc.) will be controlled by the
DURA
PULSE digital keypad.
•The frequency of the AC drive will be determined by the DURA
PULSE
keypad potentiometer.
•The display of the AC drive should default to output current (A) when running.
Parameter Setup
In order to meet the needs of this application, the parameters should be set as follows:
Motor Nameplate Voltage Setting: 208
Range: 230V series: 200/208/220/230/240 Default Setting: 240
460V series: 380/400/415/440/460/480 Default Setting: 480
This parameter setting is determined by the motor nameplate.
Motor Nameplate Amps Setting: 9.2
Range: Drive Rated Amps x 0.1 Default Setting: Drive Rating (A)
to Drive Rated Amps x 1.0
This parameter setting is determined by the motor nameplate.
STANDARD DUTY MOTOR
HP 3 Volts 208 PHASE 3 TYPE P
RPM 3525 AMPS 9.2 HZ 60 SF 1.15
DESIGN B AMB 40°C INSUL CLASS F
DUTY CONT ENCL TEFC CODE K
P0.01
P0.00
DURAPULSE AC Drive User Manual
1st Ed. Rev. D 05/2013
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