DOC No: PN 86880 REV A
20
MOTOR WILL NOT OPERATE
Cause Remedy
No power to motor. Ensure proper voltage has been applied to motor power leads.
Check leads to ensure no short circuits are present.
Control Input lead is shorted.
Clear and isolate Control Input lead from Tachometer Out lead.
Clear and isolate Control Input lead from Common lead.
No Control Input applied. Ensure proper control input is applied to control Input lead: for
0-5V, ensure line is not shorted. If manual control EagleDrive,
adjust potentiometer to increase control voltage. Ensure control
power supply common is connected to the common lead.
Thermal Limit is active. Turn o motor and wait for temperature to cool. NOTE: If power
voltage and control signals are present, motor will automatically
restart when temperature is reached. Reduce motor load
conditions and/or improve cooling of motor housing if persistent
limit occurs.
Motor has been damaged. Contact your Micropump Distributor or contact Micropump
directly for replacement product.
CYCLIC NOISE OR VIBRATIONS
Cause Remedy
Loose motor mounting bolts.
Tighten motor mounting bolts.
Foundation not rigid. Relocate motor.
Pump loose on motor. Tighten pump mounting bolts.
Pump is worn. Replace or repair pump.
Tachometer Out lead is
shorted to FWD/REV lead.
Clear and isolate Tachometer Out lead from FWD/REV lead.
NO TACHOMETER SIGNAL
Cause Remedy
No power to motor. Ensure proper voltage has been applied to motor power leads.
Check leads to ensure no short circuits are present.
Improper wiring. Check that the Tachometer Out lead is connected to the positive
input of the frequency counter.
Check that the common lead of the frequency counter is
connected to the motor Common lead.
Check leads to ensure no short circuits are present.
Motor is stopped. Ensure proper voltage has been applied to motor power leads
Ensure proper control input is applied to Control Input lead.
Ensure control power supply common is connected to the
Common lead.
MOTOR RUNS IN THE WRONG DIRECTION
Cause Remedy
FWD/REV lead is shorted
to Common lead.
Clear and isolate FWD/REV lead from Common lead or shield.
Check leads to ensure no short circuits are present.
TROUBLESHOOTING
If the EagleDrive does not meet its design performance or fails to operate correctly,
refer to the following tables for assistance in identifying the cause and remedy:
Execution of troubleshooting steps, determination of root cause and
corrective actions should be performed by a skilled maintenance person.
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