Testing negative current limit – Rockwell Automation 1398-DDM-xxx USE MNL/ULTRA 200 DIG.SERVO.DR User Manual

Page 204

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Publication 1398-5.0 – October 1998

11-16

Maintenance and Troubleshooting

8. Choose

OK

to close the Set Up window and activate the Drive

Signals window.

9. Slowly adjust the potentiometer while viewing the Drive Signals

window. The Current - Input Limit + value should update as the
potentiometer is adjusted.

Testing Negative Current Limit

1. Verify the accuracy of the potentiometer with an ohmmeter before

installing.

2. Disable the drive by opening the connections between the

ENABLE input and +24VDC.

3. Disconnect the connections to J1-29 and J1-28.

4. Connect the 10K potentiometer between J1-29 and J1-28.

Refer to “J1 – Controller” on page 6-1 for a diagram showing the
location of the pins and Figure 6.44 on page 6-45 for an intercon-
nect diagram.

5. Choose the

Drive

S

ignals

command icon from ULTRA Master.

6. Choose

S

et Up

, if the Drive Signals Set Up window is not already

active.

7. Choose

Current - Input Limit

as the analog signal.

8. Choose

OK

to close the Set Up window and activate the Drive

Signals window.

9. Slowly adjust the potentiometer while viewing the Drive Signals

window. The Current - Input Limit - value should update as the
potentiometer is adjusted.

If you determine that an analog input is defective, return the unit for
repair.

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