R&M Materials Handling ELECTRIC CHAIN HOISTS LoadMate Chain Hoist TMU Motorized Trolley - Manual (Page 23)

LM TMU I&M MANUAL/EN/06.15.2009
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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.
Technical Characteristics
Table 6. Technical Characteristics
Technical
Characteristics Description
Power range 0.75 kW
Supply voltage* 380 – 480 VAC ±10%
Nominal supply frequency 48 – 62 Hz
Nominal current
2.4 A
Digital control S1, S2, DI3
Max output voltage Equal to supply voltage
Control voltage range 48 or 115 VAC ±10%
Ambient temperature -10 o C to 50 o C 14 o F to 120 o F
Humidity 95% N. C. (with dripping)
Degree of protection Inverter + inverter cover IP20
Dimensions (W x H x D) 5.24 x 3.62 x 2.36 in. [133 x 92 x 60 mm]
Altitude Output current must be reduced 1% for every
100 m over 1000 m. For heights over 3000 m,
consult factory.
Pollution degree Pollution degree 2 according to NEMA ICS-1,
IEC664 and UL840
Vibration IEC68-2-6
Shock IEC68-2-27
)
Note: * A transformer is used to provide the proper supply voltage if the main power supply is different from the
required supply voltage.
4.1.2 Normal Operation for Trolley
The inverter goes into Ready-to-Run within one second after power is applied to the inverter. During running,
the inverter follows the user defined speed control mode.
The default speed control mode is the two-speed (MS-2).
The stopping method, which the user cannot change on TMU VFD, is programmed to decelerate to a stop
using dynamic braking. As a result of this, the brake is used essentially as a holding brake and the wear on
the brake is minimized. When the RUN Forward/Reverse command is removed, the inverter decelerates to
zero according to its preset ramp time and then the brake sets. If a failure occurs or if the emergency stop
button is pushed, dynamic braking is overridden and the brake closes immediately, bringing the motor and
load to an immediate stop.
4.1.3 LED Status Indicator
TMU VFD indicates its operating status by two LEDs. A steady green LED indicates Ready-to-Run. A
blinking green LED indicates that a fault condition had been activated, but the fault has since recovered.
Normal operation is possible when the green LED is blinking. A blinking red LED indicates a severe fault
condition and operation is inhibited. The blinking pattern tells the user the type of fault that has occurred.