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64
Fault
Possible Causes
Solution
Over Current
Shorted output
Check for any shorts in motor cables.
Locked rotor
Check for debris in pump.
Damaged wire insulation
Check motor wire insulation with a megger.
Over Voltage
Internal Drive short
With power to Drive off, measure outputs with
ohmmeter to detect short.
Power cycling on and off
Check for a generator or switching on input
line.
High line voltage
Measure incoming line voltage to Drive;
should be between 190V and 265V.
Under Voltage
Low line voltage
Temporary loss of power
Check for local power outage.
Excessive load current
Check motor is correctly sized for the
application.
Loss of a motor phase
Check correct voltage is present on all motor
leads.
Power was removed from
Drive
Check correct voltage is present on all input
lines.
Cannot Start Motor
Exceeding Service Factor
Amps
Check Service Factor Amps entered are
correct.
Check pump and motor are correct.
No Service Factor Amps value
entered
Check Service Factor Amps entered and are
correct.
There is an open (connection)
in motor wires
Check resistance of all motor wires is correct.
Locked rotor
Pull pump check for debris in pump.
Dry Run
Operation at open discharge
May need to reduce Dry Run Sensitivity
pressure or apply back pressure on
transducer.
Drive cannot read transducer
signal
Check linearity of transducer, as it may be
damaged. See Troubleshooting Guide for
more information.
Possible leak
Check for pipe break or large leak.
Dry running pump
Check water level in well.
Ground Fault
Ground wire shorted to motor
phase
Check the ground wire for short to motor
phase wire or check insulation integrity with a
megger.
Long motor cable length
If motor cable length is more than 1000 ft
a reactor or filter may be needed to limit
capacitance between motor wires.
System Not Grounded
Ungrounded Drive
Ground Detect parameter can be disabled, but
will reactivate after 72 hours.
*For additional Troubleshooting information, please visit www.sta-rite.com/resources/images/16455.pdf for a downloadable guide.
SECTION 8: Pentek Intellidrive
™
Variable Frequency Drives
8.8 Troubleshooting
Содержание P42B0007A2-01
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