3.3 - FREQUENCY INVERTER
Schematics & Parts mySelective.com
CHAPTER 3 7
Protective
Operation
Output is
shut OFF
and motor
coasts to a
stop
OPR (digital operator connection fault) Turn OFF power, and properly connect
the digital operator, then turn ON power
CE (MEMOBUS fault)
communication data cannot received
properly
Check communication device and signals
Stops
according
to constant
setting
STP (emergency stop)
At receiving an emergency stop fault
signal, inverter stops output by setting
stopping method selection (n005)
Check external circuit (sequence)
OFF Protective
Operation
Output is
shut OFF
and motor
coats to a
stop
• Insufficient power supply voltage
• Control power supply fault
• Hardware fault
Check the following:
• Power supply voltage
• Main circuit power supply wiring
• Terminal screws are securely
lightened.
• External control circuit (sequence)
• Replace the inverter
ALARM DISPLAY
INVERTER
STATUS
EXPLANATION CAUSES AND
CORRECTIVE ACTIONS
DIGITAL
OPERATOR
RUN
(GREEN)
ALARM
(RED)
OR
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