Safety Precautions - Omron E5CC-T Manual

E5@C/E5@C-T

Safety Precautions

● Be sure to read the precautions for all E5@C/E5@C-T models in the website at:
http://www.ia.omron.com/.
Warning Indications
Indicates a potentially hazardous
situation which, if not avoided, may
CAUTION
result in minor or moderate injury or in
property damage.
Supplementary comments on what to
Precautions for
do or avoid doing, to use the product
Safe Use
safely.
Supplementary comments on what to
Precautions for
do or avoid doing, to prevent failure to
Correct Use operate, malfunction or undesirable
effect on product performance.
Meaning of Product Safety Symbols
Used to warn of the risk of electric shock under
specific conditions.
Used for general prohibitions for which there is no
specific symbol.
Used to indicate prohibition when there is a risk of
minor injury from electrical shock or other source
if the product is disassembled.
Used for general CAUTION, WARNING, or
DANGER precautions for which there is no
specified symbol. (This symbol is also used as the
alerting symbol, but shall not be used in this
meaning on the product.)
Used for general mandatory action precautions
for which there is no specified symbol.
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.
22
CAUTION
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 listed*1 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. *2
d. Caution: To reduce the risk of fire or electric shock, do not
interconnect the outputs of different Class 2 circuits. *3
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.
Even if you replace only the Main Unit of the E5DC, check
the condition of the Terminal Unit.
If corroded terminals are used, contact failure in the
terminals may cause the temperature inside the
Digital Controller to increase, possibly resulting in fire.
If the terminals are corroded, replace the Terminal Unit as well.
Tighten the terminal screws to the rated torque of
between 0.43 and 0.58 N•m. *4
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. E5CC, E5EC, E5AC, and E5DC Controllers that were shipped through
November 2013 are UL recognized.
*2. An SELV (separated extra-low voltage) system is one with a
power supply that has double or reinforced insulation between the
primary and the secondary circuits and has an output voltage of
30 V r.m.s. max. and 42.4 V peak max. or 60 VDC max.
*3. A class 2 circuit is one tested and certified by UL as having the current and
voltage of the secondary output restricted to specific levels.
*4. The specified torque is 0.5 N·m for the E5CC-U.