LH Series -
Quick Start Guide

1LH, 3LH, and DX - Signature and Performance Chassis

QUICKSTART LH-DX, Revision 002

1LH/3LH/DX, Performance and Signature Chassis

Mounting the VFD

  1. Mount the enclosure in such a way that it is fully supported.
    Note: 18" (450mm) clearance below and 6" (150mm) around required for ventilation.

Connect Wiring

  1. Open door after turning door latches 1/4 turn counter-clockwise.
  2. Connect motor leads to the terminal block labeled output.
  3. Optional: If your VFD is equipped with AuxPower®, make the connection to your pivot on the output terminals located in the upper right-hand area of the chassis.
  4. Connect power leads to the terminals labeled input.
    Note: This may be on the optional disconnect.
Caution: Crimp or solder (NO WIRE NUTS) any connections when splicing motor leads. Inadequate/high-resistance connections can cause nuisance faults or damage to the pump and VFD.
Input, output, and ground terminals
  1. Secure the appropriate ground wires into the lugs marked with the ground symbol.
    Note: 4ohms or less to earth ground recommended

  1. Install transducer into a 1/4" NPT non-metallic fitting and run the wire back to the VFD, up to the terminal area and cut to length.
    Note: Cut transducer leads to length, DO NOT coil extra wire or connect shielding ground wire. DO NOT run transducer leads next to motor leads. If necessary, only cross transducer and motor leads at a 90 degree angle.
  2. Install the Black wire into the I1- terminal and the remaining White or Red wire into the I1+ terminal on the control board.

Powering up the VFD

  1. Close the door and secure by turning door latches 1/4 turn clockwise.
  2. To bypass initial setup, press the HOME button, or, to use the Perfect Pressure wizard, choose Yes (ENTER) when prompted.
    Note: Hold the BACK and ENTER buttons for 3 seconds to reset the VFD to default configuration

Optional: To add a run/stop from a PLC, pivot control, or float switch remove the orange jumper wire and make those connections to AUX2 and COM.
Caution: No voltage may be introduced on these terminals.

AUX2 and COM connections on terminal block


Configuration of LH Series Drives

Looking for the Installation Guide for an LH Series VFD? See the Configuration Quick Start Guide for LH Series Drives.

Read more

LH Series Manual