xii
12. 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 in-
creased gradually, the power supply may not be reset or malfunctions may
occur.
13. 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.
14. 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.
15. 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.
16. Approximately 30 minutes is required for the correct temperature to be dis-
played after turning the power supply to the Temperature Controller ON.
Turn the power supply ON at least 30 minutes prior to starting control op-
erations.
17. The output may turn OFF when shifting to certain levels. Take this into con-
sideration when performing control.
18. When turning OFF the power, use a switch or relay to ensure the voltage
decreases immediately. Incorrect operation and data storage errors may
occur if the voltage decreases slowly.
19. 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.
20. Make sure that any option units are installed correctly. Do not remove the
internal PCB when installing an option unit.
21. When drawing out the Temperature Controller from the case, do not apply
force that would deform or alter the Temperature Controller.
22. When drawing out the Temperature Controller from the case to replace the
Temperature Controller, check the status of the terminals. If corroded ter-
minals are used, contact faults with the terminals may cause the tempera-
ture inside the Temperature Controller to increase, possibly resulting in fire.
If the terminals are corroded, replace the rear case as well.
23. When inserting the Temperature Controller into the case, do not force it
into the case. Doing so will damage internal parts.
24. When drawing out the Temperature Controller from the case, turn the pow-
er supply OFF first, and absolutely do not touch the terminals or electronic
components or apply shock to them. When inserting the Temperature Con-
troller, do not allow the electronic components to come into contact with the
case.
25. Static electricity may damage internal components. Always touch ground-
ed metal to discharge any static electricity before handling the Tempera-
ture Controller. When drawing out the Temperature Controller from the
case, do not touch the electronic components or patterns on the board with
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