16
• Ignition failure
Chapter 2. MOUNTING AND WIRING
(2)Start contacts ON
(4)Start contacts OFF
POWER LED
Flame output
Start check completion
FLAME LED
Start check LED
Start contact (term.7-2)
Elapsed time
(1)Power ON
Start check (2s)
No
Input status
FRS100 activity
Output activity
1
Power ON
Power is applied across terminals 1 and 2.
(POWER LED lights up)
2
Start contacts ON
When the start contacts are closed power is applied • (Start check operation
across terminals 7 and 2. After completion of the
LED lights up)
start check, relay 1K turns on. Since relay 1K turns • Start check completion
on, the start check completion output from terminal output ON
8 turns on.
3
Ignition failure
If the burner does not ignite, the flame detector
does not detect a burner flame, and relay 2K does
not turn on.
4
Start contacts OFF
The power supplied across terminals 7 and 2 is
• (Start check LED turns
cut off, relay 1K turns off, power to terminals 4
off)
and 8 is cut off, and the start check completion
• Start check completion
output turns off.
output OFF
The FRS100 returns to standby status and waits
for the next start signal.
Note: It is possible that relay 2K may turn ON when the power is turned on.
