Mitsubishi Electric MES3-255C-EN, User Manual

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1. Safety Precautions

Precautions concerning the operating environment and usage conditions
Do not use the product in the places as follows. Failure to follow this instruction may cause malfunctions and
reduced life of the product.

Ambient temperature exceeds 0º to +55ºC.
(Température ambiante excède 0º à +55ºC.)

Daily average ambient temperature exceeds 35ºC.
(Température ambiante quotidienne et moyenne excède 35ºC.)

Relative humidity exceeds 5% to 95% or condensation is observed.
(Humidité relative excède 5% à 95% ou condensation est
observée.)

Altitude exceeds 2000 m.
(Altitude excède 2000 m.)

Dust, corrosive gas, saline and oil smoke exist.
(Poussière, gaz corrosif, salin et huile fumée existe.)

Frequent vibration or impact exists.
(Vibration fréquente ou impact existe.)

Rainfall or water droplet hits the product.
(Pluie ou gouttelette frappe le produit.)

Exposed to direct sunlight.
(Exposé à lumière du soleil directe.)

Metal pieces or conductive materials blow.
(Pièce métal ou matière conducteur souffle.)

Under strong electromagnetic field or noise.
(Sous champ électromagnétique fort ou
bruit.)

Precautions concerning the installation
Please read this instruction manual before installation.
Caution

The product shall be installed by a technician who has expertise in electric work such as safe installation and wiring.

Always handle the end face of metal parts with care. The sharp part may cause injuries.

During threading or wiring work, take precaution so that any metal chip or a part of wire cut does not enter the
product.

Make sure to use the connection diagram for correct wire connection. Incorrect wiring may cause the device
malfunction, fire or electric shock.

Never do hot-line jobs. Otherwise, it may lead to electric shock, fire or device problems.

Use appropriate size of electric wires. If inappropriate size of electric wire is used, it may cause fire due to
generated heat.

Use an appropriate size of solderless terminal which fits the wire. If inappropriate solderless terminal is used,
wire breakage or contact failure may occur, which may cause the device malfunction, failure, burnout, or fire.

For UL/c-UL standard, please use the copper conductors wire which temperature rating is 60 ºC /75 ºC .
(Pour UL/c-UL standard, utilisez le conduit en cuivre dont la température classée à 60 ºC /75 ºC.)
Part Wire size Appropriate solderless terminal
Power supply section
terminal block 0.75 to 2.0 mm
2
RAV1.25-3.5
RAV2-3.5
CC-Link communication
section terminal block Version 1.10-compatible CC-Link
dedicated cable R1.25-3
Contact output section
terminal block 0.3 to 0.75 mm
2
R1.25-3
(Solderless terminals with a crimp
sleeve cannot be used.)

Make sure all the fittings are securely tightened. Failure in tightening may cause the device malfunction, fire, or
electric shock.
(Assurez-vous que tout le serrage est fermement serré. Manque de serrage peut causer mauvais
fonctionnement du dispositif, feu, ou commotion électrique.)

Fixing fittings must be tightened to the specified torque. Excessive tightening may cause damage to terminals or
screws.
(Fixation du serrage doit être serrée à couple de serrage spécifié. Serrage excessif peut endommager du
terminal ou vis.)
Insufficient tightening may cause the device malfunction, fire, or electric shock.
(Serrage insuffisant peut causer mauvais fonctionnement du dispositif, feu, ou commotion électrique.)

Accessory of LAN port cap can be used for dust-proof.

Please return the unit which you removed for wiring. The units are only support to be worked as
EcoWebServerIII.
It will be not worked without using for EcoWebServerIII.

Please do not replace for any unit of EcoWebServerIII. Operation verification of EcoWebServerIII is confirmed as
the purchase. It may cause a malfunction or failure if EcoWebServerIII is used in any other combination.