4 checking the speed reference – Rockwell Automation VSM500 Integrated Drive/Motor User Manual

Page 60

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9-4

Installing and Operating the VSM500 Integrated Drive/Motor, Version 3.0

9.4

Checking the Speed Reference

Use the following procedure to check the speed reference:

Step 1. Uncouple the driven equipment from the motor section, if possible.

Step 2. Turn power on to the unit.

Step 3. Set the operator speed reference signal to zero. Note that when the unit is

powered up the first time, it uses the factory-set minimum speed setting as
the speed reference.

For terminal block speed reference: Use the speed potentiometer or other
user-supplied external speed reference device.

For local operator control speed reference: Use the

key to decrease

the speed reference.

Step 4. Press the user-installed Start button (section 7.6) or the green

key on

local operator control units.

Step 5. Vary the speed reference while running the motor unloaded across the speed

range. Use a handheld tachometer to check the speed.

Step 6. If the motor operates satisfactorily, proceed to step 8.

If the motor does not operate satisfactorily, continue with step 7.

Step 7. If the motor does not operate satisfactorily:

a. Check that the speed reference is wired correctly. See section 7.5, Wiring

the Speed Reference.

b. If the speed reference is correct, and the motor does not operate

satisfactorily, refer to chapter 8, Verify the Setup and Adjust the Switches if
Required.

Step 8. If the motor operates satisfactorily:

a. Press the user-installed Stop button (section 7.6) on standard units or the

red

key on the local operator control units.

b. Remove power from the unit.

c. Couple the driven equipment to the motor section.

!

ATTENTION: The following procedures require rotating parts and/or
electrical circuits to be exposed. Stay clear if the unit must be running.
Disconnect, lockout, and tag the power source if contact must be made.
Failure to observe these precautions could result in severe bodily injury
or loss of life.

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