Non-Auto-Resettable Shutdowns - York YK Service Instructions Manual

Overvoltage
• A 230 volt unit will fault if the input voltage is higher
than 254 VAC.
• A 460 volt unit will fault if the input voltage is higher
than 508 VAC.
• A 460 volt unit with a 575VAC line and a trans-
former will fault if the input voltage is higher than
635 VAC.
The VSOP drive will restart automatically in 10 sec-
onds after the fault has cleared.
Possible Problems:
The input voltage may not be correct. Power factor
correction capacitors or other VSD's on the same
input line can distort the line voltage causing the
VSOP drive to fault.
Possible Solutions:
Verify the input voltage. Refer to known problems
on page 3 of this form.
NON AUTO RESETTABLE SHUTDOWNS
Overload
The overload shutdown is based on a high level of
current over a period of time.
• 230 volt unit, the overload timer starts timing when
output current is greater than 7.5 amps, and will
shut down in 5 minutes. The time is reduced as the
current is increased, at 8.5 amps a shutdown will
occur in 40 seconds.
• 460 volt, the overload timer starts timing when out-
put current is greater than 4.1 amps, and will shut
down in 5 minutes. The time is reduced as the cur-
rent is increased,at 4.3 amps a shutdown will occur
in 40 seconds.
The VSOP drive will restart when input power is re-
moved for 30 seconds and reapplied.
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Possible Problems:
Something maybe binding up the oil pump i.e. dirt in
the oil or other material from manufacturing.
Possible Solutions:
Reverse the direction of the oil pump. This may free
up the oil pump.
Connect the motor across the line voltage using an
overload protector. This may also free up the oil pump.
Clean the oil.
Output line to line short
• Motor is shorted or wires are shorted at the VSOP
drive output terminal block.
The VSOP drive will restart when input power is re-
moved for 30 seconds and reapplied.
Possible Problems:
The VSOP drive output maybe shorted. The motor
maybe shorted phase to phase or phase to ground.
The VSOP drive output filter board maybe shorted.
Possible Solutions:
Refer to the troubleshooting guide for blown input
fuses.
Locked Rotor
• The rotor of the motor is locked and will not rotate.
The VSOP drive will restart when input power is re-
moved for 30 seconds and reapplied.
Possible Problems:
Dirt from the oil may be jammed in the oil pump.
Possible Solutions:
Reverse the direction of the oil pump. This may free
up the oil pump.
Connect the motor across the line voltage using an
overload protector. This may also free up the oil pump.
Clean the oil.
YORK INTERNATIONAL