Omron E5EC - Page 29

Simplicity on the Worksite Solutions Guide for FAQs: E5CC/E5EC
Setting Heater Burnout Alarms
5-1
Setting Heater Burnout Alarms
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.
A heater burnout
alarm can be used only with a Controller that supports HS and HB alarm detection.
CT
SSR
Heater burnout alarm:
E5CC/E5EC
Turns ON if the heater current is below the
set value of the heater burnout detection
current.
Confirm that the HB ON/OFF parameter in the Advanced Function Setting Level is set to ON (enabled).
The default setting is ON.
With the default setting, the HB alarm is output on auxiliary output 1.
For a Controller that supports HB and HS alarm detection, a heater alarm (HA) is assigned in advance to
auxiliary output 1. An OR of the HB and HS alarms will be output. To assign an OR of alarms 1 to 4 and
an HB alarm, assign the Integrated Alarm Assignment (ALMA).
2 Check the destination of the output.
sub1 (SUB1): Indicates the
←Auxiliary Output 1 Assignment parameter.
←Default setting is HA (Heater alarm).
Advanced Function
Setting Level
hbu (HBU): Indicates the
←
HB ON/OFF parameter.
←
Default setting is on (ON):
Enabled.
Advanced Function
Setting Level
If off (OFF) is displayed, press the (Up)
Key to change to on (ON) to enable the heater
burnout alarm.
Refer to Moving to the Advanced
Function Setting Level page 4-14 for
the procedure to enter the Advanced
Function Setting Level.
1 Confirm that the heater burnout alarm is enabled.
Simplicity on the Worksite Solutions Guide for FAQs: E5CC/E5EC