1LH -
Quick Start Guide
Configuration

(Single-Phase Input)

1LH QUICKSTART, 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. “MAX ANALOG SENSOR RANGE” - Set the psi range of the 4-20mA psi sensor. Default is 150 psi. Press ENTER to proceed.
  3. "ANALOG 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.
  4. "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.
  5. "DISABLE MANUAL MODE” - The “Yes” value allows you to disable the MANUAL run mode. “No” allows you to run the VFD manually on/off max frequency.
  6. “OVERCURRENT LIMIT” - Setting for motor overload protection (full load or service factor amp rating for the motor) using the arrows to toggle. Press ENTER to proceed.
  7. 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 settings can be modified after the initial setup completes. For full listing of available parameters, please refer to the product manual.

Alternative Configuration:
Speed Reference

Overcurrent
Limit
110.0 Amps
  1. On start, use the arrows to toggle to “SPEED REFERENCE?”. 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. "MAX FREQUENCY” - Set maximum frequency/ the target of start- up ramp. Press ENTER to proceed.
  4. "DISABLE MANUAL MODE” - The “Yes” value allows you to disable the MANUAL run mode. “No” allows you to run the VFD manually on/off max frequency. Press ENTER to proceed.
  5. "OVERCURRENT LIMIT” - Setting for motor overload protection (full load or service factor amp rating for the motor) using the arrows to toggle. Press ENTER to proceed.
  6. "MOTOR RPM” - Use the arrows to adjust the RPM rating of the motor. Use the enter key to move from left to right. Press ENTER to proceed
  7. "UNDER CURRENT” - Minimum current allowed before unit trips. Toggle over to set the value—typically 70% of the motor’s full load amps. For best results, consult the motor manufacturer. Press ENTER to proceed.
  8. Press the RUN/AUTO button to start the system
Additional Notes:
  1. Typical connections: Start/ Stop to AUX1 and COM, 4-20mA analog input to l1+ and l1- or l2+ and l2-, 10 VDC input to 10 V, V IN and COM.
  2. Caution: Introducing voltage to AUX connections will damage the control board. Any such damage is not covered by the product warranty. Refer to the manual to confirm proper input connections.

Installation of 1LH Drives

Looking for the Installation Guide for a 1LH VFD? See the Installation Quick Start Guide for 1LH Drives.

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1LH Series Manual
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