R&M Materials Handling ELECTRIC CHAIN HOISTS LoadMate Chain Hoist TDU Motorized Trolley - Manual (Page 8)

R&M Materials Handling, Inc LoadMate Chain Hoist
Springfield, Ohio USA TDU Instruction Manual
(: 800 955-9967 Revision 2
web: www.rmhoist.com
08/13/02 RM-LM-TDU-MAN-1999-2-ENG.doc 8
Technical Characteristics
CAUTION
The trolley that you have just purchased should only be used with the nominal load
indicated on the rating plate. The service life of the TDU depends on the demands
placed on it such as the average operating time, and the number of start/stops and its
maintenance.
A transformer that is mounted to the trolley side plate opposite the motor side, supplies the proper power to
the TDU motor and controller. The transformer for a 460 volts or 575 volts power supply is dual voltage rated
and it is field reconnectable. The transformer for a 208 volts or 230 volts power supply is single voltage rated.
Without the transformer, the power supply for the TDU motor is 400VAC, 50 Hz and the control voltage is
48V.
The controller for the TDU offers built-in flexibility such as the method of speed control and the selection of
output speeds. The speed control method allows the user to select from a two-step speed mode or a step-
less speed mode. Each of these speed modes allows the use of a two-speed push button operator. The
trolley speeds is selected by adjusting switches (DIP) on the I/O card. It is extremely easy to reprogram the
unit to meet changing needs.
Input voltage: 208, 230, 460, or 575 V AC
Control voltage: 115 V AC
Frequency: 60Hz
Fuse: 16 A
Nominal output torque (at output pinion): 3.87 lb-ft
Maximum output torque (at output pinion): 7.74 lb-ft
Nominal output power: 2 horsepower
Braking torque: 2.58 lb-ft
Minimum speeds: 8, 12, 16 and 20 ft/min
Maximum speeds: 65, 80, 100 and 125 ft/min
Step-less variable speed with above mentioned minimum and maximum speeds
Acceleration times:
1.67, 2.50, 3.33 and 5.00 seconds
Slowdown limit speeds: 2, 20, 30 and 40 ft/min
Stall prevention (during acceleration and at constant speed) reaction time: 1.83 seconds
Motor overload protection:
Bimetal switch (option)
Nominal current: 2 to 5 amps
Maximum starting current: 15 amps
Protection: IP-55
Approvals: CSA
Because of the step-less soft-start, a heavy load can be moved safely at quick speed. The control unit's
characteristics minimize pendulum load swing and allow the load to be positioned easily.
Environmental data
Ambient temperature: -5°F to +104°F
Humidity: 90%RH (no condensation)
Vibration: 0.2g
n
(2m/s
2
)
Dimensions and Weights
Weight of C2 motorized trolley assembly, for capacity < 2 ton is approximately 117 lbs.
Weight of C3 motorized trolley assembly, for capacity > 2 ton is approximately 137 lbs.
For more dimensional information, refer to hoist outline drawings.