MSA GM FL5000 - Page 18

18 FL5000 Multi-Spectrum Flame Detector US
4 Principles of Operation
After 2 seconds in Test Mode (Phase 2):
• the FL5000 indicates an Instant Alarm condition by:
○ setting the analog output to 16 mA
○ changing the LED flashing to indicate “Test Mode Instant Alarm"
○ setting the relay to Instant Alarm State.
After a user-selectable time delay of 0-30 seconds
1
(Phase 3):
• the FL5000 displays an Sustained Alarm condition by:
○ setting the analog output to 20 mA
○ changing the LED flashing to indicate “Test Mode Sustained Alarm"
○ setting the relay to Sustained Alarm State.
After 4.25 minutes in Sustained Alarm mode (Phase 4):
• the unit will return to Ready Mode by:
○ dropping the analog output to 4.05 mA
○ restoring the LED flashing to “Ready”
○ setting the relay to Ready state.
After 5 minutes, if Bluetoothis enabled (Phase 5):
• the unit will indicate Bluetooth activity by:
○ setting the analog output to 3.0 mA
○ changing the LEDflashing sequence to BluetoothActive mode
○ setting the relay to Ready state.
NOTE: After the test is initiated via the Test Lamp, all other commands are ignored until the Test Mode is over.
• While in Test Mode, the unit will not detect flames.
• Interruption of the Test Lamp flashing for more than 3 seconds will result in termination of the test sequence and a
return to Ready Mode (Phase 0).
If a relay is latched, it must be manually reset via the reset relays line or a Modbus command. There is a 10 second restart
delay. After the unit returns to Ready State from Phase 4, the unit waits for 10 seconds before a subsequent Test Lamp
transition back to Phase 1.
1Time delay can be set through Modbus to any value between 0 and 30 seconds, and via dipswitch to 0, 8, 10 or 14 seconds.