Overscale
PV has exceeded Input range high limit value (Scaling high limit value for
DC voltage, current inputs).
PV and [ ] are alternately indicated in the PV Display.
For Manual control, the preset MV is output.
Input error
Underscale
PV has dropped below Input range low limit value (Scaling low limit value
for DC voltage, current inputs).
PV and [ ] are alternately indicated in the PV Display.
For Manual control, the preset MV is output.
Burnout
If PV has exceeded Indication range, Control range, the PV Display indicates [ ] and [ ]
alternately.
If PV has dropped below Indication range, Control range, the PV Display indicates [ ] and
[ ] alternately.
If thermocouple, RTD or DC voltage (0 to 1 V DC) input is burnt out or disconnected, the PV Display
indicates [ ] and [ ] alternately.
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 type).
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.
In Program control, Burnout is enabled even in standby (program control waiting) mode.
[Output status when input errors occur] can be used only for controllers using Direct current input
and voltage input, and Direct current output.
For manual control, the preset MV is output.
Output status
OUT1 OUT2
Output status
when input
errors occur
Contents
and
Indication
Direct(Cooling)
action
Reverse(Heating)
action
Direct(Cooling)
action
Reverse(Heating)
action
ON (20mA) or
OUT1 high
limit value (*)
ON (*)
Indicates
[ ]
and
[ ]
alternately.
OFF (4mA) or
OUT1 low
limit value
OFF (4mA) or
OUT1 low limit
value
OFF
OFF
ON (20mA) or
OUT1 high limit
value (*)
ON (*)
Indicates
[ ]
and
[ ]
alternately.
OFF (4mA) or
OUT1 low
limit value
OFF (4mA) or
OUT1 low limit
value
OFF
OFF
(*) Outputs a value between OFF (4mA) and ON (20mA) or between OUT1 low limit value and OUT1 high limit value,
depending on deviation.
Warm-up indication
After the power supply to the instrument is turned on, the PV Display
indicates the input type, and SV Display indicates input range high limit
value (for thermocouple, RTD inputs) or scaling high limit value (for Direct
current and voltage inputs) for approximately 3 seconds.
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