Parker TQ10X, Руководство пользователя

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➅
Troubleshooting 115
Hall Miswiring
The drive will produce a motor fault and illuminate the red
MOTOR FAULT
LED if
it detects an improper Hall state on its Hall effect inputs (all HIGH or all LOW ), or
if no motor is connected to the drive. A damaged Hall sensor may also activate the
motor fault protection circuit.
To diagnose Hall miswiring or a damaged Hall sensor:
➀
Remove AC power
➁
Disconnect I/O: Disconnect all front panel inputs and outputs, except for enable
input, motor temp±, and Hall signals (Hall 1 – 3, Hall +5, Hall Gnd).
➂
Apply AC power: If the MOTOR FAULT LED is still illuminated, then one or more
Hall sensors in the motor may be damaged.
Motor Overtemperature Protection
The TQ10X Drive has a circuit that can protect the motor against overheating.
Through its
MOTOR TEMP+ and MOTOR TEMP– terminals, the drive checks for
electrical continuity provided by a normally-closed thermostat mounted on the
motor. If the motor overheats and the thermostat opens, the loss of continuity
activates protection circuitry in the TQ10X—it turns off power output to the motor,
and illuminates the
MOTOR FAULT LED.
This is a latched fault. Wait for the motor to cool, then cycle power to resume
operations.
A motor overtemperature fault may be an indication that your motor is not sized
properly for your application. It may also indicate that your motor is not installed
properly (poor heatsinking, for example).
A thermostat cannot protect the motor in every situation! Bursts of peak current
produce bursts of heat that are quickly absorbed in the motor windings, but slowly
dissipated through the motor case and mounting flange. If the bursts are short and
infrequent, winding temperature and thermostat temperature will be similar, and
the thermostat can protect the motor. If full current flows continuously in the
motor, however, the windings can exceed their rated temperature and be damaged,
even before the thermostat temperature rises enough to trigger a motor fault.
Technical Support
If you cannot solve your system problems using this user guide, contact your local
Automation Technology Center (ATC) or distributor for assistance. If you need to
talk to our in-house application engineers, contact Parker Compumotor’s Applica-
tions Department at (800) 358-9070, from 6:00
AM
to 5:00 PM Pacific time.
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