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Simplicity on the Worksite
Setting Heater Burnout Alarms
The procedure to output heater burnout alarms is given step by step in this section.
A heater burnout alarm operates by detecting the heater current with a current transformer (CT). If
the detected current is less than the specified heater burnout detection current even though the
control output is ON, a heater burnout will be assumed and an alarm will be output.
E5@N
CT
1
Set the Alarm 1 Type parameter to 0.
You can use only alarm 1 for the heater burnout alarm.
To output only the heater burnout alarm from auxiliary output 1, set the alarm type for alarm 1 to 0 (no
alarm).
If the alarm type is set to any other value, alarm 1 will turn ON both for the heater burnout alarm and a
temperature alarm.
You set this parameter in the Initial Setting Level. The parameter is set to 2 (Upper-limit Alarm) by default.
Initial Setting Level
alt1 (ALT1): Indicates
←the Alarm 1 parameter.
←Default setting is 2
(Upper-limit Alarm).
2
Confirm that the heater burnout alarm is enabled.
Confirm that the HB ON/OFF parameter in the Advanced Function Setting Level is set to ON (enabled).
The default setting is ON.
Advanced Function
Setting Level
hbu (HBU): Indicates the
←HB ON/OFF parameter.
←Default setting is on (ON):
Enabled.
Setting Heater Burnout Alarms
Heater burnout alarm:
SSR
Initial Setting Level
If off (OFF) is displayed, press the
Key to change to on (ON) to enable the heater
burnout alarm.
Solutions Guide for FAQs: E5@N
Turns ON if the heater current is below the
set value of the heater burnout detection
current.
Change the set value to
0 with the
(Up
and Down) Keys.
(Up)
5-1
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