Commissioning; Verifying Mwl Electrical Connections - Siemens Milltronics MWL Weight Lifter Operating Instructions Manual

Belt scales weight lifler

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Commissioning

6.1

Note

This chapter applies only to the electronic version of MWL. The manual version has no

electrical components.

After completing the electrical connections described in the Connecting chapter (Page 27) , and

prior to using the MWL in normal operation, verify that the UP and DOWN proximity sensors and

the motor are connected correctly.

Verify proximity sensor connections

Verify that the proximity sensors have been connected correctly using the following procedure:

1. Remove the top cover on the MWL module that the gearmotor is installed on.

2. With power applied to the control panel, place a ferrous object (for example, a screwdriver)

3. Repeat for the DOWN sensor. The red DOWN indicator should light.

4. If the sensor indicator lights are incorrect, turn off the power to the control panel, and switch

5. Repeat steps 2 and 3 to ensure that the sensors are now connected correctly.

Verify motor connections

Verify that the motor has been connected correctly using the following procedure:

1. With power applied to the control panel, turn the key switch to the LOC position.

2. Press the UP pushbutton and observe the direction of travel.

3. If the MWL is moving UP, the motor is connected correctly and you may now proceed to

Milltronics MWL Weight Lifter

Operating Instructions, 11/2011, 7ML19985CR03-03

on the face of the UP sensor. The green UP indicator on the control panel should light.

the TB2-1 and TB2-2 connections on the proximity sensor junction box. [See Connect the

sensor junction box (Page 33) ]

operate the MWL in a normal fashion.

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