Spectrex 20/20MPI - Commercial IR3 Flame Detector - Manual (Page 26)

SharpEye TM IR3 Flame Detector User Guide
14 User and Maintenance Manual
Table 5: 20/20MPI Status
Detector Status LED color LED mode
Fault, BIT Fault Yellow 4 Hz flashing
Normal Green 1 Hz flashing
Warning Red 2 Hz flashing
Alarm Red Steady
4.2 Output Signals
The detector controls the following outputs:
 Model 20/20MPI-R:
 Alarm Relay
 Fault Relay
 RS485
 Model 20/20MPI-M:
 0-20 mA Stepped Source Configuration
 RS485
The detector can be in one of the following states.
Table 6: 20/20MPI Output Signals
Detector Status Description
Normal The detector is functioning normally.
BIT The detector performs a Built-In Test.
Warning Fire detected – warming alarm (pre-alarm) state
Alarm Fire detected – fire alarm state
Latched Alarm
(Optional)
The alarm outputs are latched due to the detection of a
fire that has already been extinguished.
BIT Fault A fault is detected during BIT sequence. The detector
will continue to detect fire if the alarm conditions occur.
Fault A fault is detected when the power supply is too low or
during a software fault.
In each state, the detector activates different outputs, as specified in Table
7.