Simplicity on the Worksite Solutions Guide for FAQs: E5CC/E5EC 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. Heater burnout alarm: Turns ON if the heater current is below the set value of the heater burnout detection current.
E5CC/E5EC CT 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. Refer to Moving to the Advanced Function Setting Level page 4-14 for the procedure to enter the Advanced Function Setting Level. ← Default setting is on (ON): Enabled. If off (OFF) is displayed, press the (Up) Key to change to on (ON) to enable the heater burnout alarm. 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). Setting Heater Burnout Alarms Advanced Function Setting Level sub1 (SUB1): Indicates the ← Auxiliary Output 1 Assignment parameter. ← Default setting is HA (Heater alarm). Simplicity on the Worksite Solutions Guide for FAQs: E5CC/E5EC 5-1 SS R 1 Confirm that the heater burnout alarm is enabled. 2 Check the destination of the output.