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Caution
This instrument is intended to be used under the following environmental conditions
(IEC61010-1):
Overvoltage category , Pollution degree 2
Ensure the mounting location corresponds to the following conditions:
• A minimum of dust, and an absence of corrosive gases
• No flammable, explosive gases
• No mechanical vibrations or shocks
• No exposure to direct sunlight, an ambient temperature of 0 to 50 (32 to 122 )
that does not change rapidly, and no icing
• An ambient non-condensing humidity of 35 to 85 %RH
• No large capacity electromagnetic switches or cables through which large current
is flowing.
• No water, oil or chemicals or where the vapors of these substances can come into
direct contact with the unit
• Take note that the ambient temperature of this unit - not the ambient temperature of the
control panel - must not exceed 50 (122 ) if mounted through the face of a control
panel. Otherwise the life of the electronic components (especially electrolytic capacitors)
may be shortened.
Note: Avoid setting this instrument directly on or near flammable material even
though the case of this instrument is made of flame-resistant resin.
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Caution
• Do not leave wire remnants in the instrument, as they could cause a fire and/or malfunction.
• Use a solderless terminal with an insulation sleeve in which the M3 screw fits when
wiring the instrument.
• The terminal block of this instrument is designed to be wired from the left side. The lead
wire must be inserted from the left side of the terminal, and fastened with the terminal screw.
• Tighten the terminal screw using the specified torque. If excessive force is applied to
the screw when tightening, the terminal screw or case may be damaged.
• This instrument does not have a built-in power switch, circuit breaker and fuse.
Be sure to install a power switch, circuit breaker and fuse near the controller.
(Recommended fuse: Time-lag fuse, rated voltage 250 V AC, rated current 2 A)
• For a 24 V AC/DC power source, do not confuse polarity when using direct current (DC).
• Do not apply a commercial power source to the sensor which is connected to the input
terminal nor allow the power source to come into contact with the sensor.
• Use a thermocouple and compensating lead wire according to the sensor input
specifications of this controller.
• Use the 3-wire RTD according to the sensor input specifications of this controller.
• For voltage input, (+) side input terminal number differs depending on its range as follows.
(+) side input terminal number of 0 to 5 V DC, 1 to 5 V DC, 0 to 10 V DC: 16
(+) side input terminal number of 0 to 10 mV DC, -10 to 10 mV DC, 0 to 50 mV DC,
0 to 100 mV DC, 0 to 1 V DC: 18
• When using a relay contact output type, externally use a relay according to the capacity
of the load to protect the built-in relay contact.
• When wiring, keep input wires (thermocouple, RTD, etc.) away from AC sources or load
wires.
