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E5AN/E5EN/E5CN/E5GN E5AN/E5EN/E5CN/E5GN
46
Precautions
General Precautions
The user must operate the product according to the performance
specifications
described in the operation manuals.
Before
using the
product under conditions which are not described
here or applying the product to nuclear control systems, railroad
systems,
aviation systems, vehicles, combustion systems, medical
equipment, amusement machines, safety equipment, and other
systems,
machines, and equipment that
may have a serious influ
-
ence
on lives and property if used improperly
, consult your OMRON
representative.
Make sure that the ratings and performance characteristics of the
product are sufficient for the systems, machines, and equipment,
and
be sure to provide the systems, machines, and equipment with
double safety mechanisms.
Safety Precautions
Definition of Precautionary Information
DANGER Indicates
an imminently hazardous situation
which, if not avoided, will result in death or
serious
injury
.
WARNING Indicates a potentially hazardous situation
which,
if not avoided, could result in death or
serious
injury
.
Caution Indicates a potentially hazardous situation
which,
if not avoided, may result in minor or
moderate
injury
, or property damage.
Installation Precautions
WARNING Do not attempt to take any Temperature
Controller apart while the power is being
supplied. Doing so may result in electric
shock.
WARNING Do
not touch any of the terminals or terminal
blocks while the power is being supplied.
Doing so may result in electric shock.
WARNING Do
not allow pieces of metal or wire cuttings
to get inside the Temperature Controller.
Failure to do so may result in malfunction,
electric shock or fire.
WARNING Do not attempt to disassemble, repair, or
modify the Temperature Controller. Any
attempt to do so may result in malfunction,
fire, or electric shock.
Caution Do not use the Temperature Controller in
locations
subject to flammable gases. Doing
so
may result in an explosion.
Caution The
switching capacity and switching
condi
-
tions
will
have a great ef
fect on the longevity
of the output relays. Use the Temperature
Controller within the rated load and do not
use the Temperature Controller beyond the
number of operations specified under elec-
trical life. Using the Temperature Controller
beyond
its electrical life may result in contact
welding
or burning.
Caution Do not use the Temperature Controller at
loads
greater than the rated value. Doing so
may
result in burning or other damage.
Caution Use
a power supply voltage within the speci
-
fied range. Failure to do so may result in
burning
or other damage.
Caution Tighten
the terminal screws to the following
torques:
E5AN,
E5EN, E5CN: 0.74 to 0.90 N
Sm
E5GN: Terminals
1 to 6: 0.23 to 0.25 N
Sm
T
erminals 7 to 9: 0.12 to 0.14 N
Sm
Failure
to tighten terminal screws to the cor
-
rect
torque may
result in fire or malfunction.
Caution Make settings for the T
emperature Control
-
ler that are suitable for the controlled sys-
tem.
Failure to do so may cause unexpected
operation
resulting in damage to
equipment
or
personal injury
.
Caution Prepare a circuit with an overheating pre-
vention alarm and take other safety mea-
sures to ensure safe operation in the event
of
a
malfunction. Loss of operational control
due to malfunction may result in a serious
accident.
Operating Environment Precautions
Caution In order to ensure the safe operation, ob-
serve
the following precautions.
•
Do not use the T
emperature Controller in the following places:
•
Locations exposed to radiated heat from heating devices
•
Locations subject to direct sunlight
•
Locations subject to temperatures or humidity outside the
range specified in the specifications
•
Locations subject to condensation as the result of severe
changes in temperature
•
Locations subject to corrosive or flammable gases
•
Locations subject to dust (especially iron dust) or salts
•
Locations subject to exposure to water
, oil, or chemicals
•
Locations subject to shock or vibration
•
Use and store the T
emperature Controller within the rated tem
-
perature and humidity specified for each model. When two or
more T
emperature Controllers are mounted horizontally close
to each other or vertically next to one another
, the internal tem
-
perature will increase due to heat radiated by the T
emperature
Controllers and the service life will decrease. In such a case,
forced cooling by fans or other means of air ventilation will be
required to cool down the T
emperature Controllers. When pro
-
viding forced cooling, however
, be careful not to cool down the
terminal sections alone to avoid measurement errors.
•
Allow enough space around the T
emperature Controller to en
-
sure proper heat dissipation. Do not block the ventilating holes.
•
Check polarities and orientation when connecting terminals.
Not doing so may result in malfunction.
•
When wiring the E5AN, E5EN, or E5CN, use crimp terminals
with the specified dimensions (M3.5, width 7.2 mm max.).
•
When wiring the E5GN, use cables of a thickness A
WG24
(0.205 mm
2
) to A
WG14 (2.081 mm
2
) for terminals 1 to 6 and
use cables of a thickness A
WG28 (0.081 mm
2
) to A
WG22
(0.326 mm
2
) for terminals 7 to 9. The exposed current-carrying
part to be inserted into terminals must be 5 to 6 mm.
•
Do not use empty terminals.
•T
o avoid inductive noise, keep the wiring for the T
emperature
Controller’
s terminal board away from power cables carry high
voltages or large currents. Also, do not wire power lines togeth
-
er with or parallel to T
emperature Controller wiring. Using
shielded lines to separate pipes and ducts is recommended.
Attach surge absorbers or noise filters to peripheral devices
that may generate noise, such as inductance devices (e.g.,
motors, transformers, solenoids, magnetic coils etc.). If using a
noise filter with the power supply
, in addition to confirming the
voltage and the current, mount the power supply as near as
possible to the T
emperature Controller
. Set up the T
emperature
Controller
, along with its power supply
, as far away as possible
from devices that generate strong, high-frequency waves (high-
frequency welders, high-frequency machines etc.) and devices
that generate surges.
•
Set up the power supply so that the voltage will reach the rated
voltage within 2 seconds after turning ON.
•
Allow at least 30 minutes for the T
emperature Controller to
warm up.
•
When using auto-tuning, turn ON power for the load (e.g., heat
-
er) at the same time as or before supplying power to the T
em-
perature Controller
. If power is turned ON for the T
emperature
Controller before turning ON power for the load, auto-tuning will