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5.1 Errors (Alarms)
PROTECTIVE FUNCTIONS
127
5 PROTECTIVE FUNCTIONS
5.1 Errors (Alarms)
If any fault has occurred in the inverter, the corresponding protective function is
activated to bring the inverter to an alarm stop and automatically give the
corresponding error (alarm) indication on the PU display.
If your fault does not correspond to any of the following errors or if you have any other
problem, please contact your sales representative.
•
Retention of alarm output signal .... When the magnetic contactor (MC) provided on
the power supply side of the inverter is opened at
the activation of the protective function, the
inverter's control power will be lost and the alarm
output will not be held.
•
Alarm indication ............................. When the protective function is activated, the
operation panel display automatically switches to
the above indication.
•
Resetting method .......................... When the protective function is activated, the
inverter output is kept stopped. Unless reset,
therefore, the inverter cannot restart. Switch
power off once, then on again; power off once,
then on again; or apply RES signal for more than
0.1 seconds.
•
When the protective function is activated, take the corresponding corrective action,
then reset the inverter, and resume operation.
5.1.1 Operation at alarm occurrence
Operation Mode
Fault
DeviceNet
™
operation PU operation
Inverter fault Continued Continued
Communication error Inverter trip Stop
(1) Inverter alarm
Refer to page page 135 and remove the cause of the alarm.
(2) Communication alarm
Check the states of the operating status indicator LED and remove the cause of the
alarm. Check the DeviceNet
™
master station. (Refer to page 138)
If any fault has occurred in the inverter, the protective function is activated, the inverter
comes to an alarm stop, and the ALARM lamp is lit. When the parameter unit
(FR-PU04) is used, the PU display automatically gives any of the following error
(alarm) indications.
When the protective function is activated, reset the inverter.