4742-E P-(i)
SAFETY PRECAUTIONS
SAFETY PRECAUTIONS
Eeospcspl001
The controller described in this manual consists of electric parts and units.
To prevent accidents and also failure and burning of electric parts and units due to improper inter-
connection of them and also connection of power cables, please read the manual carefully and
strictly observe the items indicated below.
(1) Before connecting or disconnecting/removing a unit, shut off all power supplies and discharge
parts in units which have been charged. Otherwise, injury, or failure or burning of a unit may
occur.
(2) Check the specifications of the power supply to be connected. Failure or burning of a unit may
occur if power supply voltage does not match the power requirements of the unit or if the polar-
ity is incorrect.
(3) Connect inputs and outputs of a unit correctly. If they are connected incorrectly, failure or burn-
ing of a unit may occur.
(4) Always ground units and connect the P.E. earth cable of the electric cabinet. Otherwise, electric
shock may cause if leakage occurs.
(5) Insert an over current protection device (breaker, fuse) to the power supply which is connected
to units. Otherwise, cables or units may be burnt or fire may be cause due to short circuit.
(6) When manufacturing cables used for connecting units, make sure that the size of cables
matches the carrying current. Especially, power cables must be manufactured carefully. If the
current capacity of the cable is insufficient, the cable may be heated to be burnt or fire may be
caused.
(7) The electric cabinet and the operation box where units are installed must be water-and dust-
proof construction. Otherwise, injury, or failure or burning of a unit may occur.
(8) Make sure to use a thermostat incorporated in motors and units to protect devices. Otherwise,
devices may be burnt or fire may be caused.
The following warning indications are used in this manual to draw special attention to information of
particular importance.
Keep this manual carefully so that you can read it whenever you need the information in this man-
ual.
The contents of the manual may be changed due to improvements of the product.
:
Indicates an imminent hazard which, if not avoided, will result in death or
serious injury.
:
Indicates hazards which, if not avoided, could result in death or serious
injury.
:
Indicates hazards which, if not avoided, could result in minor injuries or
damage to devices or equipment.
:
Indicates precautions relating to operation or use.
DANGER
WARNING
CAUTION
NOTICE
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