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PM 728V-T v2 2020-10 Copyright © 2020 Quality Machine Tools, LLC
Model PM-728V-T Electrical Fig 1
Section 5 PARTS
Short beeps Possible cause
Series of beeps after
pressing stop, or dis-
connecting power
Powering-down, nor-
mal operation
Two beeps Low voltage (motor is
running)
Three beeps Overload
Four beeps Over-heating
Five beeps Over-voltage
Six beeps Over-current
Seven beeps EEPROM error
WARNINGS
Long beeps Possible cause Note
Two beeps Bus voltage is lower
than 250Vdc
F_058=250.0
Three beeps Output current is
higher than 7A
F_056 =7.0
Four beeps Drive temperature is
higher than 80 ° C
F_057=80.0
There may be detail dierences
between this representative drawing
and the machine as supplied
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