Precautions For Operation - Omron E5CN User Manual

1) It takes approximately two seconds for the outputs to turn ON from after the power supply is turned ON.
Due consideration must be given to this time when incorporating Temperature Controllers into a control
panel or similar device.
2) Make sure that the Temperature Controller has 30 minutes or more to warm up after turning ON the power
before starting actual control operations to ensure the correct temperature display.
3) When executing self-tuning, turn ON power for the load (e.g., heater) at the same time as or before
supplying power to the Temperature Controller. If power is turned ON for the Temperature Controller
before turning ON power for the load, self-tuning will not be performed properly and optimum control will
not be achieved. When starting operation after the Temperature Controller has warmed up, turn OFF the
power and then turn it ON again at the same time as turning ON power for the load. (Instead of turning the
Temperature Controller OFF and ON again, switching from STOP mode to RUN mode can also be used.)
4) Avoid using the Controller in places near a radio, television set, or wireless installing. The Controller may
cause radio disturbance for these devices.
Be sure to thoroughly read and understand the manual provided with the product, and check the fol-
lowing points.
Timing
Purchasing the prod- Product appearance
uct
Product model and speci-
fications
Setting the Unit Product installation loca-
tion
Wiring Terminal wiring
Power supply inputs
Operating environ- Ambient temperature
ment
Vibration and shock
Foreign particles
xiv

Precautions for Operation

Preparations for Use
Check point
After purchase, check that the product and packaging are not dented or
otherwise damaged. Damaged internal parts may prevent optimum
control.
Make sure that the purchased product meets the required specifica-
tions.
Provide sufficient space around the product for heat dissipation. Do not
block the vents on the product.
Do not subject the terminal screws to excessive stress (force) when
tightening them.
Make sure that there are no loose screws after tightening terminal
screws to the specified torque of 0.74 to 0.90 N·m (see note).
Be sure to confirm the polarity for each terminal before wiring the termi-
nal block and connectors.
Wire the power supply inputs correctly. Incorrect wiring will result in
damage to the internal circuits.
The ambient operating temperature for the product is −10 to 55°C (with
no condensation or icing). To extend the service life of the product,
install it in a location with an ambient temperature as low as possible. In
locations exposed to high temperatures, if necessary, cool the products
using a fan or other cooling method.
Check whether the standards related to shock and vibration are satis-
fied at the installation environment. (Install the product in locations
where the conductors will not be subject to vibration or shock.)
Install the product in a location that is not subject to liquid or foreign
particles entering the product.
Note The tightening torque for E5CN-U is 0.5 N·m.
Details