Parker E-DC, Руководство по установке оборудования

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42 E-DC Hardware Installation Guide Chapter 3 – Troubleshooting
cable should not have excessive tensile force applied to it and should not
be bent beyond a one-inch radius of curvature during normal operation.
Tighten all cable connectors.
T
ESTING THE
M
OTOR
If the motor fails to move, you should test the motor with an ohmmeter to
examine the resistance between the motor connections. If the motor is not
malfunctioning, the source of the problem is probably within the drive. If
you operate a faulty drive with a reliable motor, you may damage the
motor. If you find that the drive is not faulty, remove power, and remove
the motor from the drive. Use the following steps to test the motor.
1. Remove power from the system. Detach the motor from the drive.
2. With the motor detached from the system, use an ohmmeter to check the
resistance across Phase A. It should be low but measurable, approximately
1 – 10 ohms (depending on the motor)
.
3. Use the ohmmeter to check the resistance across Phase B. It should also be
low but measurable, approximately 1 – 10 ohms. ( The resistance across
Phase A and Phase B should be nearly identical ).
4. Use the ohmmeter to check the resistance between Phase A and Phase B. It
should be infinite .
5. Use the ohmmeter to check the resistance between Phase A and Earth (the
motor case shaft).
It should be infinite .
6. Use the ohmmeter to check the resistance between Phase B and Earth (the
motor case shaft).
It should be infinite .
7. Turn the shaft manually . There should be a small amount of detent torque,
but no holding torque.
If the motor responds as described to each of these steps, it is probably
functioning properly. The source of the problem is may be within the
drive.
A
UTOMATIC
T
EST
Often in diagnosing a problem, it is helpful to rule out possible causes. If
you disconnect the load and controller from the drive, four components
remain—the drive, motor, motor cable, and power cable.
You can then configure the drive to run the automatic test function. See
instructions near the beginning of
Chapter 2 Installation . If the motor
turns as expected—in an alternating mode—then the drive, motor, and
cables are probably
not the cause of the problem. The cause may lie with
the controller, power supply, software, mechanics, etc.
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