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47DAC OPERATING MANUAL EM-9518-B Rev.4
1.3 POINTS OF CAUTION
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ENVIRONMENT
Install the unit within the installation specifications.
• Indoors use.
• Environmental temperature must be within -10 to +55°C (14 to 131°F) with relative humidity within 30 to 90% RH without
condensing.
• Provide sufficient space around the unit for heat dissipation.
• Mount the unit to a panel between 1.6 and 8 mm thick.
• Install the unit in a well-ventilated place in order to prevent internal temperature rise.
• Refer to “PANEL CUTOUT” to install several units. In mounting the unit with other equipment side by side, provide suf-
ficient space between them, according to the dimensions in the panel cutout.
• Do not use the unit under the following environments:
– Where the unit is exposed to direct sunlight, rain or wind. (The unit is not designed for outdoor use.)
– Where condensation may occur due to extreme temperature changes.
– Where corrosive or flammable gas is present.
– Where heavy dust, iron powder or salt is present in the air.
– Where organic solvent such like benzine, thinner, and alcohol, or strong alkaline materials such like ammonia and
caustic soda may attach to the unit, or where such materials are present in the air.
– Where the unit is subject to continuous vibration or physical impact.
– Where there are high-voltage lines, high-voltage equipment, power lines, power equipment, equipment with transmis-
sion unit such like a ham radio equipment, or equipment generating large switching surges around the unit.
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WIRING
• In order to prevent potential electric shock, wire the unit after turning off the power supply and making sure that the power
is not supplied to the cable.
• In order to enable the operator to turn off the power input immediately, install a switch or a circuit breaker according to the
relevant requirements in IEC 60947-2 and properly indicate it.
• Be sure to confirm the name and polarity of each terminal before wiring to the terminal block.
• Do not connect anything to unused terminals.
• Be sure to attach the terminal cover to prevent electric shock.
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HANDLING CAUTIONS
• The unit is designed to function as soon as power is supplied, however, a warm up for 10 minutes is required for satisfy-
ing complete performance described in the data sheet.
• Use the unit within the noted supply power voltage and rated load.
• The last measured values are held in mode transition. Take this into consideration when configuring the control system.
• Clean the surface of the unit with wet soft cloth. Do not use organic solvent such like benzine, thinner and alcohol. Doing
so may result in deformation or discoloration of the unit.
• When abnormality is found such like smokes, unusual smell and abnormal noises coming from the unit, immediately cut
the power supply and stop using it.
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LCD
• Do not apply physical impact to the display. Doing so may damage the LCD.
• If a liquid substance running off from the LCD by its breakage should adhere to the skin, rinse it under running water
immediately for more than 15 minutes. If it should reach the eye, rinse it under running water immediately and consult a
doctor.
• The display is designed to provide the optimal legibility when viewed from the viewing angles. Please note that the dis-
play may not be viewed from outside the angles, which is a basic feature of a LCD panel.
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INFRARED INTERFACE
• Prepare Infrared Communication Adaptor (model: COP-IRU) separately for the infrared communication.
• Transmission distance between the 47DAC and the COP-IRU is maximum 1 meter.
• Communication can be affected by sunlight, fluorescent lightings employing inverter technology and so forth. Try at a
shorter distance if communication is not established.
• Clean the infrared interface. If it is dirty or dusty, it may malfunction.
• The COP-IRU can communicate with single panel meter only. Do not turn more than one panel meter on to Infrared Com-
munication Mode.
• The communication time may depend on PC performance or environment.
