Troubleshooting - Mitsubishi Electric FR-E700 Instruction Manual

Troubleshooting

7 Troubleshooting
Frequency inverter FR-E700SC EC/ENE has a multitude of protective functions which protect the drive
and the inverter from damage in case of a fault. When an alarm occurs in the inverter, the protective
function is activated bringing the inverter to an alarm stop and the PU display automatically changes
to any of the following error (alarm) indications. If your fault does not correspond to any of the fol-
lowing errors or if you have any other problem, please contact your sales representative.
● Retention of fault output signal. . . . . . . . . . . . . . . . When the magnetic contactor (MC) provided on
● Fault or alarm display. . . . . . . . . . . . . . . . . . . . . . . . . . When the protective function is activated, the
● Resetting method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . When a protective function of the inverter is ac-
● If protective functions were activated (i. e. the inverter switched off with an error message) follow
the instructions for error correction provided in the manual for the inverter. Especially in the case
of short circuits or earth contacts in the inverter output and mains over voltages the cause of the
fault must be determined prior to switching on again as a recurrence of such faults at short
intervals can lead to premature aging of components or even the complete breakdown of the
device. After the cause of the fault has been found and corrected the inverter can be reset and
operations continue.
FR-E700 SC EC/ENE
the input side of the inverter is opened at the
activation of the protective function, the invert-
er's control power will be lost and the alarm out-
put will not be held.
operation panel display automatically switches
to the above indication.
tivated, the power output of the inverter is
blocked (motor is coasting). The inverter cannot
start up again unless an automatic restart has
been configured or the inverter is reset. Please
observe carefully the warnings contained below
in the configuration of an automatic restart or
the execution of a reset.
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