Fuji Electric Model: PXR4 Instruction Manual page 4

• If the voltage shown above exceeds 60Vdc (i.e. hazardous voltage), the basic insulation is required
between all terminals of this controller and the ground, and supplementary insulation is required for
the alarm output.
Isolation class of this controller is as shown below. Be sure to check that the isola-tion class of the
controller satisfies your requirements before installan.
Mains (Power source)
Control output1 (relay output)
Control output2 (relay output)
Alarm outout (AL1)
Alarm outout (AL2)
Heater burnout alarm output (HB)
• 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 normally 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 fitting 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 firing 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 fire.
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, provided that the controller is
properly used.
: Basic insulation, : Non-insulation,
Measured value input, CT input
Internal circuit
Control output1 (SSR drive output / Current output)
Communication (RS-485) circuit
Di gi tal input (DI).
– 4 –
: Functional insulation