LH/DX/SD Series -
Quick Start Guide

Enterprise Chassis

QUICKSTART LHE, Revision 003

Phase Technologies VFD in Enterprise Chassis

Mounting the VFD

  1. Mount the enclosure in such a way that it is fully supported.
    Notes: 18" (450mm) clearance below and 6" (150mm) around required for ventilation. NEMA 3R chassis or add-on necessary for exterior or dusty installation.

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. 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.
Input terminals for transducer

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 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


Analog Constant Pressure Setup

Enterprise Chassis VFD's all include the Perfect Pressure™ wizard, which makes the setup of constant pressure systems a breeze. Now that you have installed your VFD, read the Quick Start Guide for Analog Constant Pressure Setup on Enterprise Drives.

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Enterprise Series Manual(s)