Mitsubishi Electric MS-T Series, Инструкция по эксплуатации

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7. Troubleshooting List
Trouble State Cause Measures
The coil rating voltage is incorrect. Replace the correct entire unit.
The terminal voltage is low (85% or
less).
Modify to the specified voltage.
The voltage
drop is large Power supply
capacity is
insufficient.
Wiring capacity is
insufficient.
Increase the power supply capacity.
Use thicker wires.
Layer short circuit in coil. Replace the entire unit.
A beating
sound
(loud or
quiet) is
heard, but
contacts
do not
close.
The unit is damaged. Replace the entire unit.
The wiring is faulty. Repair the faulty section.
Fault in operating switch. Replace the switch.
The fuse is blown. Replace the fuse.
Contacts
do not
close.
There is
no sound.
Wire breakage in operating coil or
short circuit in operating circuit.
Replace the entire unit.
A voltage is applied on the coil. Check and modify the circuit.
Capacitance between wires for
long-distance wiring.
Use a DC operated type.
Induction voltage from other wires. Separate from the other wires.
It does not
get
de-excited.
Fault in operating
switch Welding
Breakage
Check that the capacity is correct, and
replace if necessary.
Replace the switch (relay).
The contact is welded.
Replace the entire unit, check the cause,
and take measures.
Dew has condensed on iron core
surface.
Decrease the temperature difference.
Attraction due to residual magnetism. The unit is worn. Replace the entire unit.
The unit has deformed due to heat or
mounting stress.
Replace the entire unit.
Contacts
do not
open.
(Does not
return.)
There is
no
excitation.
The unit is damaged. Replace the entire unit.
The coil rating voltage is incorrect.
Replace with the unit having the correct
rating.
The applied voltage is incorrect (high).
Replace the entire unit, and modify the
voltage.
Operating voltage is low, thereby
inhibiting attraction. Replace the entire unit, and modify the
voltage.
Burned in
short time
Layer short circuit
Attraction is not possible occasionally
(when voltage is 85% or less, etc.) Replace the entire unit, check the cause,
and take measures.
Layer short circuit caused by
environmental deterioration. Replace the entire unit, check the cause
of deterioration, and take measures.
The applied voltage is too high.
Replace the entire unit, and modify the
voltage.
Coil
burning
Burns after
a while
The in-panel temperature is too high.
(55

C or more)
Replace the entire unit, and set the coil
temperature to 140

C or less. (Lower the
in-panel temperature.)