Digital Temperature Controllers E5AZ/E5EZ/E5CZ 53
13.When inserting the Temperature Controller into the case, do not
force it into the case. Doing so will damage internal parts.
14.The EEPROM has a limited write life. When overwriting data
frequently, e.g., via communications, use RAM Mode.
15.Use the product within the rated load and power supply.
16.Use a switch, relay, or other contact so that the power supply
voltage reaches the rated voltage within 2 seconds. If the applied
voltage is increased gradually, the power supply may not be reset
or malfunctions may occur.
17.When using PID operation (self-tuning), turn ON the power supply
to the load (e.g., heater) at the same time or before turning the
power supply to the Temperature Controller ON. If power is turned
ON for the Temperature Controller before turning ON power
supply to the load, self-tuning will not be performed properly and
optimum control will not be achieved.
18.Design the system (e.g., control panel) to allow for the 2 seconds
of delay required for the Temperature Controller's output to
stabilize after the power is turned ON.
19.A switch or circuit breaker should be provided close to this unit.
The switch or circuit breaker should be within easy reach of the
operator, and must be marked as a disconnecting means for this
unit.
20.Approximately 30 minutes is required for the correct temperature
to be displayed after turning the power supply to the Temperature
Controller ON. Turn the power supply ON at least 30 minutes prior
to starting control operations.
21.When extending the thermocouple lead wires, always use
compensating conductors suitable for the type of thermocouple.
Do not extend the lead wires on a platinum resistance
thermometer. Use only low-resistance wire (5
Ω max. per line) for
lead wires and make sure that the resistance is the same for all
three wires.
22.When drawing out the Temperature Controller from the case, do
not apply force that would deform or alter the Temperature
Controller.
23.When drawing out the Temperature Controller from the case to
replace the Temperature Controller, check the status of the
terminals. If corroded terminals are used, contact faults with the
terminals may cause the temperature inside the Temperature
Controller to increase, possibly resulting in fire. If the terminals
are corroded, replace the rear case as well.
24.When drawing out the Temperature Controller from the case, turn
the power supply OFF first, and absolutely do not touch the
terminals or electronic components or apply shock to them. When
inserting the Temperature Controller, do not allow the electronic
components to come into contact with the case.
25.Static electricity may damage internal components. Always touch
grounded metal to discharge any static electricity before handling
the Temperature Controller. When drawing out the Temperature
Controller from the case, do not touch the electronic components
or patterns on the board with your hand. Hold the Temperature
Controller by the edge of the front panel when handling it.
26.Do not use paint thinner or similar chemical to clean with. Use
standard grade alcohol.
27.Use tools when separating parts for disposal. Contact with the
sharp internal parts may cause injury.
Precautions for Correct Use
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 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. When two or more 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
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 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.
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 Temperature Controllers
in a sequence circuit.
2. 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.
3. 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. These devices can cause radio disturbances
which adversely affect the performance of the Controller.
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