Operation (Electronic Version); Electronic Control Panel; Local Mode - Siemens Milltronics MWL Weight Lifter Operating Instructions Manual

Belt scales weight lifler

Table of Contents

7.2

Operation (electronic version)

7.2.1

The electronic version of MWL uses an AC gearmotor to lift and lower the belt scale calibration

weights. The motor is operated from an electrical panel with the following controls:

● Operator key switch: OFF, LOC (local), REM (remote)

● UP pushbutton with green indicator

● DOWN pushbutton with red indicator

● EMERGENCY STOP pushbutton

Note

Motor overload protection

 Should the motor run up against a physical stop, the internal overload relay will trip and

the motor will stop, preventing damage.

 If the proximity sensor is not activated within a specified time, the motor will be

deactivated and the brake applied. If this happens, check for mechanical restrictions and

malfunctioning sensors.

7.2.2

Applying calibration weights

1. Turn the key switch to the LOC position. The Local Relay coil will be energized providing an

enable signal to the LOGO relay, releasing the brake and allowing the motor to move freely.

2. Push the DOWN button. The MWL will move down until the DOWN sensor activates,

disabling the reversing contactor and bringing the motor to a rest position.

While the MWL is moving, the red DOWN indicator will blink. Once it stops, the indicator will

remain on.

3. Refer to the manuals for the Milltronics Belt Scale and Integrator, to perform the appropriate

calibration procedures.

Milltronics MWL Weight Lifter

Operating Instructions, 11/2011, 7ML19985CR03-03

7.2 Operation (electronic version)

Operation

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