E5EC
17
Safety Precautions
Refer to Safety Precautions for All Digital Temperature Controllers.
Do not touch the terminals while power is being
supplied.
Doing so may occasionally result in minor injury due
to electric shock.
Electric shock may occur. Do not touch any cables or
connectors with wet hands.
Electric shock, fire, or malfunction may occasionally
occur. Do not allow metal objects, conductors,
cuttings from installation work, or moisture to enter
the Digital Temperature Controller or the Setup Tool
port or ports. Attach the cover to the front-panel Setup Tool port
whenever you are not using it to prevent foreign objects from
entering the port.
Do not use the Digital Temperature Controller where
subject to flammable or explosive gas. Otherwise,
minor injury from explosion may occasionally occur.
Not doing so may occasionally result in fire. Do not
allow dirt or other foreign objects to enter the Setup
Tool port or ports, or between the pins on the
connectors on the Setup Tool cable.
Minor electric shock or fire may occasionally occur.
Do not use any cables that are damaged.
Never disassemble, modify, or repair the product or
touch any of the internal parts. Minor electric shock,
fire, or malfunction may occasionally occur.
CAUTION - Risk of Fire and Electric Shock
a. This product is UL recognised as Open Type
Process Control Equipment. It must be mounted in
an enclosure that does not allow fire to escape
externally.
b. More than one disconnect switch may be required to de-
energize the equipment before servicing the product.
c. Signal inputs are SELV, limited energy. *1
d. Caution: To reduce the risk of fire or electric shock, do not
interconnect the outputs of different Class 2 circuits. *2
If the output relays are used past their life expectancy,
contact fusing or burning may occasionally occur.
Always consider the application conditions and use
the output relays within their rated load and electrical
life expectancy. The life expectancy of output relays varies
considerably with the output load and switching conditions.
Tighten the terminal screws to the rated torque of
between 0.43 and 0.58 N•m.
Loose screws may occasionally result in fire.
Set the parameters of the product so that they are
suitable for the system being controlled. If they are
not suitable, unexpected operation may occasionally
result in property damage or accidents.
A malfunction in the product may occasionally make
control operations impossible or prevent alarm
outputs, resulting in property damage.
To maintain safety in the event of malfunction of the
product, take appropriate safety measures, such as installing a
monitoring device on a separate line.
*1. An SELV circuit is one separated from the power supply withdouble
insulation or reinforced insulation, that does not exceed 30 V r.m.s. and
42.4 V peak or 60 VDC.
*2. A class 2 power supply is one tested and certified by UL as having the
current and voltage of the secondary output restricted to specific levels.
CAUTION
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