countermeasure
The setting data is backed up in the non-volatile IC memory.
Self-diagnosis The CPU is monitored by a watchdog timer, and if an abnormal status
occurs, the controller is switched to warm-up status, turning all outputs
OFF.
Automatic cold junction
temperature
compensation
Detects the temperature at the connection terminal between the
thermocouple and the instrument, and maintains it at the same status as
if the reference junction location temperature were at 0 (32 ).
Indication range,
Control range
Thermocouple input:
[Input range low limit value – 50 (100 )] to
[Input range high limit value + 50 (100 )]
RTD input:
[Input range low limit value – (Input span x 1%)] to
[Input range high limit value + 50 (100 )]
DC voltage, current inputs:
[Scaling low limit value – (Scaling span x 1%)] to
[Scaling high limit value + (Scaling span x 10%)]
Input error (Overscale,
Underscale)
If input errors (overscale, underscale) occur, the following will be
performed depending on the selection in [Error indication].
If ‘Disabled’ is selected in [Error indication]:
Overscale occurs if PV has exceeded Input range high limit value
(Scaling high limit value for DC voltage, current inputs). The PV Display
indicates PV.
Underscale occurs if PV has dropped below Input range low limit value
(Scaling low limit value for DC voltage, current inputs). The PV Display
indicates PV.
If ‘Enabled’ is selected in [Error indication]:
Overscale occurs if PV has exceeded Input range high limit value
(Scaling high limit value for DC voltage, current inputs). The PV Display
indicates the PV and error code er05 alternately.
Underscale occurs if PV has dropped below Input range low limit value
(Scaling low limit value for DC voltage, current inputs). The PV Display
indicates the PV and error code er06 alternately.
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