R&M Materials Handling ELECTRIC CHAIN HOISTS LoadMate Chain Hoist TMU Motorized Trolley - Manual (Page 30)

LM TMU I&M MANUAL/EN/06.15.2009
30/38
This document and the information contained herein, is the exclusive property of R&M Materials Handling, Inc., and represents a non-public, confidential and proprietary trade secret
that may not be reproduced, disclosed to third parties, altered or otherwise employed in any manner whatsoever without the express written consent of R&M Materials Handling, Inc.
Copyright © (2009) R&M Materials Handling, Inc. All rights reserved.
4.4 Wiring Specification
4.4.1 Wiring Practices – TMU Variable Frequency Drive
y
Do not connect incoming three-phase AC power to the drive output terminals U, V or W.
y Do not ground the inverter together with any high-current machines.
y Before using welders or high-current machines near the crane, disconnect all line and ground wiring.
y Do not use output contactors between the inverter and the motor.
y Do not connect power factor correction capacitors to the drive input or output.
y Before turning on the inverter, check the output circuit (U, V, and W) for possible short circuits and
ground faults.
y When using more than one transformer for the inverter’s power, properly phase each transformer.
y To reverse the direction of rotation, interchange any two motor leads (U, V, or W). Changing input leads
(L1, L2, or L3) will not affect the shaft rotation direction. Ensure that the motion is in the proper direction
with respect to the push button being pressed.
y Inverter line voltage inputs (L1, L2 and L3) are voltage specific. Do not connect the wrong voltage to the
unit.
y A minimum of two collectors for each runway conductor shall be used when an inverter is used. Also, the
use of a ground conductor is recommended.
y Always mount the inverter in its proper vertical orientation so that the air can flow from bottom to top.
y Keep the inverter heatsink clear of any obstructions (components on panel) to ensure proper cooling
airflow.
y Do not connect the power supply directly to the inverter motor – always run the inverter motor from the
inverter.