Rm-materials-handling VARIABLE SPEED CONTROLS ControlMaster Plus Service Manual do Utilizador descarregar pdf (Página 7)

R&M Materials Handling, Inc.

4501 Gateway Boulevard

Springfield, Ohio 45502

P.: (937) 328-5100

FAX: (937) 325

5319

7/83

R&M Materials Handling, Inc. reserves the right to alter or amend the above information without notice.

1.2 Basic description

Inverter has many advantages and offers many new features, when compared to other inverter based systems,

which might be used in crane applications.

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. Includes also DC-rectifier.

Electrical Braking Includes a braking transistor and a braking resistor.

Control methods Can be controlled by

the electronic potentiometer control with 2-step or 3-step pushbuttons,

the multistep control with 2-4-step controllers.

Limit switch functions Built-in slowdown (S11, S21) and stop limit switch (S12, S22) functions for both running directions.

Speed supervision Inverter includes a speed supervision unit SSU, which is separate from the inverter and not dependent on

software. This safety circuitry is used to monitor the speed of the motor. In case of speed difference,

overspeed or stall the speed supervision unit stops the motion immediately.

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.

Tested parameters Inverter includes tested parameters with different motors for all power ratings. This is a benefit, which makes

every inverter delivery a proven solution. The tested and pre-set motor parameters enable a quick start-up in

crane commissioning.

1.3 Main components

The main components are:

Power class

A1 Inverter

F7 Brake supply circuit breaker 007 - 055

K7 Brake contactor

G1 Brake control unit REC12 002-011

G1 Brake control unit ESD141 015-055

F71 Circuit breaker for the second brake contactor 055

K71 Second brake contactor 055

The most important external components are:

R1 Braking resistor unit

M1 Hoisting motor

Y1 Mechanical brake

A5 KAE234 Proximity switch buffer amplifier for speed sensor

B5 Speed sensor

B6 Thermal sensor for motor protection

Overload protection device

Control devices (switches, pushbuttons etc.)

Limit switches

Example layout

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