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5
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• If there is a danger of a serious accident resulting from a failure or a defect in this unit, provide the
unit with an appropriate external protective circuit to prevent an accident.
• The unit is supplied without a power switch and fuses.
Make wiring so that the fuse is placed between the main power supply switch and this controller.
(Main power supply: 2 pole breaker, fuse rating: 250V, 1A)
• When wiring the power supply terminal, use vinyl insulated 600 volt cable or equivalent.
• To avoid the damage and failure of controller, supply the power voltage tting to the rating.
• To avoid an electric shock and controller failure, do not turn ON the power before all wiring is
completed.
• Be sure to check that the distance is kept to avoid electric shock or ring before turning the power
ON.
• Keep away from terminals while the circuit is energized in order to avoid an electric shock and a
malfunction.
• Never attempt to disassemble, fabricate, modify, or repair this unit because tampering with the unit
may result in a malfunction, electric shock, or a re.
• Output relay is the part has a limited life.
When output relay contact comes to the end of its life, it might remain on-
state, or off-state. For safety, use a protective circuit outside.
1.2 Maintenance precautions
• Be sure to turn off the power before this controller is installed or removed in order to avoid an
electric shock, malfunction, and fault.
• Regular maintenance is recommended a longer service life of this controller. Some parts of this
controller have a limited life span, or they will be deteriorated with the lapse of time.
• One-year warranty is guaranteed for this unit including accessories, prvided that the controller is
properly used.
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