(3) Turn the load circuit power ON
Control starts, so as to reach, and then maintain the control target at the SV.
Error codes during operation
If errors occur during operation, error codes below are indicated in the PV Display.
Error Code
Error Contents
PV has exceeded Input range high limit value (scaling high limit value for DC
voltage, current inputs).
PV has dropped below Input range low limit value (scaling low limit value for DC
voltage, current inputs).
Input burnout, or PV has exceeded the Indication range and Control range.
Hardware malfunction
Indication Range and Control Range
Input Type
Indication Range and Control Range
Thermocouple
[Input range low limit – 50
(100 )] to [Input range high limit + 50
(100 )]
RTD
[Input range low limit – Input span x 1%] to [Input range high limit + 50
(100 )]
DC voltage,
Direct current
[Scaling low limit value – Scaling span x 1%] to
[Scaling high limit value + Scaling span x 10%]
Input error (Overscale, Underscale)
Overscale occurs if PV has exceeded Input range high limit value (Scaling high limit value for DC
voltage, current inputs). PV and error code [
] are indicated in the PV Display alternately.
Underscale occurs if PV has dropped below Input range low limit value (Scaling low limit value for
DC voltage, current inputs). PV and error code [
] are indicated in the PV Display alternately.
For manual control, the preset MV is output.
Burnout
If PV has exceeded Indication range and Control range, [
] and [
] are alternately
indicated in the PV Display.
If PV has dropped below Indication range and Control range, [
] and [
] are alternately
indicated in the PV Display.
If thermocouple or RTD input is burnt out, or if DC voltage (0 to 1 V DC) input is disconnected,
[
] and [
] are alternately indicated in the PV Display.
If DC voltage or current input is disconnected:
For 4 to 20 mA DC, 1 to 5 V DC inputs, the PV Display indicates [
] and [
] alternately.
For 0 to 20 mA DC, 0 to 5 V DC and 0 to 10 V DC inputs, the PV Display indicates the value
corresponding with 0 mA DC or 0 V DC input.
OUT1 and OUT2 are turned OFF (OUT1 low limit value for Direct current output).
For manual control, the preset MV is output.
If Alarm or Loop break alarm is selected in [Event output EV1/EV2 allocation], Event output will be
turned ON under the alarm active conditions.
Burnout is enabled even in standby (program control waiting) mode in Program control
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