TROUBLESHOOTING
IPA Hardware Installation Guide 73
Problem 4
Either the motor wires or the Hall wires are connected incorrectly.
Use Procedure 1—Motor Wires to fix this problem by changing the motor wires.
Use Procedure 2—Hall Wires to fix this problem by changing the Hall wires.
Problem 5
The Hall wires or the encoder wires may have loose connections, causing intermittent faults.
Problem 6
Noise induced on the Hall signals from routing the motor feedback cable next to high-voltage cables. Here are
some examples:
Unshielded motor cables (use R-clamp with shielded motor cable, see System Installation
Overview in “System Installation Overview”)
Cutting cables and installing interconnects, routing feedback conductors next to high power
conductors. Either contact the factory for extension cables or use cable glands on cabinets that
clamp around the cable.
Inductive loads missing flyback diodes (motor starters, ice cube relays, solenoids, brakes)
Unshielded wires with high power (coiled wires for AC mains filters, regen resistor cables)
Keep high power cables away from low power cables (such as the feedback cable). If they need to cross, cross at
right angles.
Procedures
Procedure 1—Motor Wires
Use this procedure to connect your motor wires to the IPA.
1 With the motor’s feedback cable connected to the drive/controller, randomly connect two motor input
power wires and slowly apply a positive voltage with respect to the third. See Figure 33 on page 74.
Note: A variable low voltage (5 to 24V) current limiting power supply (less than continuous
current rating of motor) is preferred.
Warning: This procedure could damage the motor. Slowly increase the
voltage until the motor moves. Do not exceed the rated
current.
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