3LH -
Quick Start Guide
Configuration

(Three-Phase Input)

QUICKSTART 3LH, Revision 002

Typical Configuration:
Analog Constant Pressure Setup

Setup
Constant Pressure
Yes (Enter)
No  (Home)
  1. On start, use the arrows to toggle to “RUN CONSTANT PRESSURE WIZARD?” - Press ENTER key to proceed.
  2. "SPEED REFERENCE" - Select how speed reference is controlled between Start/Stop, 4-20mA, and 0-10 VDC using arrows to toggle. Press ENTER to proceed.
  3. “4-20mA psi RANGE" - Set the psi range of the 4-20mA sensor. Default is 150 psi. Press ENTER to proceed.
  4. “psi SETPOINT” - Determines the pressure you want to maintain. The factory default is 50 psi. Use the arrow keys to change if desired. Press ENTER to proceed.
  5. "SUBMERSIBLE PUMP” - This parameter sets the ramp profile for a submersible pump. “Yes” - ramps to 30 HZ in the first second to prevent excessive wear on the thrust bearing. "No" - The frequency will increase in a linear fashion from zero to max frequency. Use the arrow keys to toggle between the two settings.
    Press ENTER to proceed.
  6. "DISABLE MANUAL MODE" - The "Yes" value allows you to disable the MANUAL button run mode. "No" allows you to run the VFD manually on/off max frequency.
  7. "OVERCURRENT LIMIT" - Setting for motor overload protection (service factor amp rating for the motor) using the arrows to toggle. Press ENTER to proceed.
  8. Press the RUN/AUTO button to start the pump.
Additional Notes:
  1. Motor rotation must be verified upon completion of setup.
  2. If the VFD is not going to sleep, first check for leaks. If no leaks are present, increase the “Shutoff Frequency” under “Constant Pressure Parameters.”
  3. Set pressure tank psi to 70% of VFD psi Setpoint.
  4. Any of these settings can be modified if needed after the initial setup completes. For a full listing of available parameters, please refer to the product manual.

Documents

Installation of 3LH Series Drives

Looking for the Installation Guide for a 3LH Series VFD? See the Installation Quick Start Guide for 3LH Drives.

Read more

Download
3LH Series Manual
phasetechnologies.com/support/3lh