E5EC
19
●Service Life
1. Use the product within the following temperature and humidity
ranges:
Temperature: -10 to 55°C (with no icing or condensation)
Humidity: 25% to 85%
If the product is installed inside a control board, the ambient
temperature must be kept to under 55°C, including the temperature
around the product.
2. The service life of electronic devices like Digital 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 Digital
Temperature Controller.
3. When two or more Digital Temperature Controllers are mounted
horizontally close to each other or vertically next to one another,
the internal temperature will increase due to heat radiated by the
Digital Temperature Controllers and the service life will decrease.
In such a case, use forced cooling by fans or other means of air
ventilation to cool down the Digital Temperature Controllers. When
providing forced cooling, however, be careful not to cool down the
terminals sections alone to avoid measurement errors.
●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 product so that it is horizontally level.
4. If the measurement accuracy is low, check to see if input shift has
been set correctly.
●Waterproofing
The degree of protection is as shown below. Sections without any
specification on their degree of protection or those with IP@0 are not
waterproof.
Front panel: IP66, Rear case: IP20, Terminal section: IP00
●Operating Precautions
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 Digital Temperature
Controllers in a sequence circuit.
2. Make sure that the Digital 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 using 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.
4. When starting operation after the Digital 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 Digital Temperature Controller OFF and ON again, switching
from STOP mode to RUN mode can also be used.)
5. Avoid using the Controller in places near a radio, television set, or
wireless installing. These devices can cause radio d
isturbances
which adversely affect the performance of the Controller.
●Others
1. Do not connect or disconnect the Conversion Cable connector
repeatedly over a short period of time.
The computer may malfunction.
2. After connecting the Conversion Cable to the computer, check the
COM port number before starting communications. The computer
requires time to recognize the cable connection. This delay does
not indicate failure.
3. Do not connect the Conversion Cable through a USB hub. Doing
so may damage the Conversion Cable.
4. Do not use an extension cable to extend the Conversion Cable
length when connecting to the computer. Doing so may damage
the Conversion Cable.
●Mounting
Mounting to a Panel
Precautions for Correct Use
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