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4) Set Value Memory (EEPROM back-up)
This function memorizes all set values input via the operation and display panel to nonvolatile memory
EEPROM as back-up. Even if the power supply is turned off, the settings remain and do not need to
be reset when the power supply is restarted.
Any set value input via the communication function is not stored. If they need to be stored, use a
storage request message. (Refer to Operating Manual.)
The writing limit is approx. 0.1 million times. If the setting is performed via the communication function,
pay attention to how many times the writing has been done.
5) Output cutoff Alarm Function
This function cuts off output to the thermo-module (stops control) and generates an alarm when a
serious abnormality occurs. When the alarm occurs, the TROUBLE LED lights up and the alarm is
generated via relay contact to the pin for the output cutoff alarm of the alarm output connector. This
alarm cannot be reset unless the power supply is turned off once and restarted. Problems that may
cause this alarm include the following:
①
Overheating of Liquid Tank (Thermostat starts operating.)
②
Lowering of Controller output voltage
③
Stopping of Controller fun rotation
Table 4
Relay contact for output cutoff alarm
Item
Specification
Output type
Relay contact output: Opened when an alarm
occurs.
Contact rating
125VAC,0.4A/30VDC,2A (resistive load)
125VAC, 0.2A/30VDC,1A (inductive load)
Minimum load
5VAC,10mA / 5VDC,10mA
Mechanical life 5 million cycles or more
Electrical life
0.2 million cycles or more
6) Alarm Indication on Operation and Display Panel
Alarms indicated on the operation and display panel are as follows. There is no output generated to
the alarm output connector. If this type of alarm occurs, be sure to turn off and restart the power
supply once after the trouble causing the alarm is eliminated.
