4.3.8 Sensor Break Alarm, Sbr

A sensor break alarm occurs if the sensor or its connections to the sensor input become open circuit or greater than a high impedance, see section 5.2.14.1.

 

It can be configured using ‘P’ code P35 as follows:-

 

On	This is the default state.	In operator levels 1 and 2, Sbr will flash in the display if the sensor is open circuit.
LAt	Latching	If an open circuit input occurs the alarm will be latched until acknowledged. The alarm will only reset after it has been repaired. It behaves the same as a latched alarm configured as Nan (Manual).
oFF	No sensor break alarm	An open circuit input will not be detected.

 

A sensor break alarm can operate independently of other alarms.

 

Note: In FM approved controllers (816L, 808L, 804L) the sensor break alarm is always latched.

 

☻ ‘P’ codes are found in section 5.2.