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Chapter 4. How This Device Operates
PF PF PF
Start ON Flame detection No ame detected
Start input
Flame signal
Flame output
(with start check)
Flame output
Flame relay N.C. output
Input
Display
Output
7-segment display
Operation Operation of this device SHUT
LED
FL
LED
7-seg.
Start input OFF All relays are OFF.
- -
Start input ON Flame monitoring starts and relay K3 turns ON.
PF
Flame signal input If a flame signal is detected, relays K5, K7 and K8 turn ON.
z
PF
Flame signal OFF
Relays other than K3 turn OFF and the device continues monitoring the flame.
PF
z
: Lit, : Off, : Blinks
z
If the start input is turned OFF before the flame signal is detected
If a flame signal is detected when the start input is OFF, only the flame output without
start check turns ON. Also in a case where a flame signal is detected after the start
input had been ON but has turned OFF, only the flame output without start check
turns ON. Flame signal turnoff does not trigger recording of playback monitor data.
PF
Start input
Flame signal
Flame output
(with start check)
Flame output
Flame relay N.C. output
Input
Display
Output
7-segment display
Start ON Flame detection No ame detectedStart OFF
Operation Operation of this device SHUT
LED
FL
LED
7-seg.
Start input OFF All relays are OFF.
- -
Start input ON Flame monitoring starts.
PF
Start input OFF The device transitions to controlled shut down status.
- -
Flame signal input If a flame signal is detected, relays K7 and K8 turn ON.
z
- -
Flame signal OFF Relays K7 and K8 turn OFF and the device transitions to controlled shut
down status.
- -
z
: Lit, : Off, : Blinks
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