Mitsubishi FREQROL-SFJ, Руководство по обслуживанию

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OVER HEAT MOTOR OR RESISTOR UNIT
discontinuous
Cause
24V power
Wrong wiring
Overload
with
controller cooling
fan
Motor air inlet
clogged
Trouble with motor
thermosensor
(thermoswitch)
_____ . .
Checkup
Check if the alarm disappears
when the power is turned on
with CON5, CONC and
CONCA disengaged.
Voltage is not output across
terminals A and B (at top of
FR-SFJ).
Check motor for load con-
dition.
2. Check frequency of start/
stop.
Fan does not run satisfac-
torily,
or remains stopped.
Check cooling air flow.
Check if the thermosensor
does not reset when the mo-
tor fan is operated for
15 16 min. with the motor
Remedy
Remedy the 24V
power supply wir-
ing.
Jumper pin (Pin 4,
5) settings should,
meet input inter-
face for speed re-
ference and posi-
tion reference
bit signals.
(Refer to the
standard specifi-
cation)
Remedy the wiring.
1.
Lighten load.
2. Reduce start/
stop frequency.
Replace the fan.
Clean the air in-
let.'
1.
Shortcircuit
to
continue opera-
tion