2 basic description, 3 main components – R&M Materials Handling ELECTRIC CHAIN HOISTS LoadMate Chain Hoist LM 10 Stepless User Manual
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LM10 STEPLESS I&M MANUAL/EN/11.30.2010
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7.5.2 Basic description
Table 4. Basic Description
Inverter
The specific crane features for the inverter hardware and the special software are achieved by
combining the experience and know-how of crane applications with the latest technology.
Crane user interface
Interface with pre-designed locations for typical crane functions. The main part of this interface
is carried out by a terminal strip, which has separated sections for signals with main, control
and electronics voltage levels.
Brake control
Includes the brake contactor for disk brakes.
Electrical Braking
Includes a braking transistor and a braking resistor.
Control methods
Can be controlled by
the electronic potentiometer control with 2-step pushbuttons.
the multistep control with 2-step controllers.
the automation control using any control device with an 0-10V output (computer,
radio, PLC)
Limit switch functions Built-in slowdown stop limit switch (S12, S22) functions for both running directions.
Protections
Includes a motor thermal protection, which is based on motor temperature measurement by
Klixon placed in motor windings. A great number of other protections included are shown in the
technical data.
7.5.3 Main components
Table 5. Main Components
A1
Inverter
A3
Overspeed monitor
K1
Main contactor
K7
Brake contactor
T100
Control voltage transformer
G1
Rectifier
R1
Braking resistor unit
Z1, Z3
Ferrite rings (Depending on EMC level,
optional)
FU1
Filtering capacitors (Depending on
EMC level, optional)
X1
Terminals
Table 6. The Most Important External Components
M1
Hoisting motor
Y1
Mechanical brake
B5
Speed sensor
B6
Thermal sensor for motor protection
Control devices (switches, pushbuttons
etc.)
S11, S21, S12, S22
Limit switches