Precautions For Operation - Omron EJ1G Datasheet

■ Precautions for Correct Use
Service Life
1. Use the product within the following temperature and humidity
ranges:
Temperature: − 10 ° C to 55 ° C (with no condensation or icing)
Humidity: 25% to 85%
When the Temperature Controller is incorporated in a control
panel, make sure that the controller's ambient temperature and
not the panel's ambient temperature does not exceed 55 ° C.
2. The service life of electronic devices like Temperature Controllers
is determined not only by the number of times the relay is
switched but also by the service life of internal electronic
components. Component service life is affected by the ambient
temperature: the higher the temperature, the shorter the service
life and the lower the temperature, the longer the service life.
Therefore, the service life can be extended by lowering the
temperature of the Temperature Controller.
3. Mounting two or more Temperature Controllers side by side, or
mounting Temperature Controllers above each other may cause
heat to build up inside the Temperature Controllers, which will
shorten their service life. If the Temperature Controllers are
mounted above each other or side by side, use forced cooling by
fans or other means of air ventilation to cool down the
Temperature Controllers.
However, be sure not to cool only the terminals. Doing so will
result in measurement errors.
Ensuring Measurement Accuracy
1. When extending or connecting the thermocouple lead wire, be
sure to use compensating wires that match the thermocouple
types.
2. When extending or connecting the lead wire of the platinum
resistance thermometer, be sure to use wires that have low
resistance and keep the resistance of the three lead wires the
same.
3. Mount the Temperature Controller so that it is horizontally level.
4. If the measurement accuracy is low, check to see if input shift has
been set correctly.

Precautions for Operation

1. A certain amount of time is required for the outputs to turn ON
from the time the power supply is turned ON. Due consideration
must be given to this time when incorporating Temperature
Controllers in a sequence circuit.
2. It takes 30 minutes from the time the product is turned ON until
the correct temperature is indicated. Always turn ON the power
supply at least 30 minutes before starting temperature control.
3. Avoid using the Temperature Controller near a radio, television
set, or other wireless device. Its use would result in reception
disturbance.
Modular Temperature Controller for Gradient Temperature Control
Installation
Connecting Units
1. Align the connectors and connect the Units to each other.
Connect an End Unit to the Unit on the right end. (Up to 16 Units
can be connected side by side.)
Note: 1. Do not connect an End Unit directly to an HFU.
2. Always connect an End Unit to the right side of a Basic Unit.
2. Slide the yellow sliders on the top and bottom of the Units until
they click into place.
Slider
3. Attach the cover seal to the connector on the Unit on the left end
of the EJ1G.
Cover Seal
Removing the Terminal Block
1. Press down the terminal block lever.
2. Pull out the terminal block.
Lock
Lower the lever.
Pull out.
EJ1G
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