Honeywell krom schroeder IFD 258-5/1W - Page 14

IFD 258 · Edition 03.12l
14
44 ซ.บรมราชชนนี 70 ถ.บรมราชชนนี ศาลาธรรมสพน์ ทวีวัฒนา กทม. 10170.
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Connect voltage
00
01
0
04
04
00
Normal shut-
down via  signal
Operation signalling contact opens,
gas valve closes
Behaviour in the event of flame failure during
operation
If the flame fails during operation, the IFD 258 will
perform a fault lock-out within the safety time during
operation t
SB
. Depending on the setting of the program
selector switch, the valves will be closed immediately or
the burner will be restarted once. If the burner does not
function, a fault lock-out occurs.
Safety interlocks (Li)
In the event of fault signal: reset
Waiting time t
W
running,
start-up with  signal
Start-up position/standby
Flame simulation check
Safety time on start-up t
SA
running,
gas valve opens, ignition in process
No flame detected:
fault lock-out
Flame detected:
operation signalling contact closes
Flame fails:
safety time during operation t
SB
starts to elapse, restart or fault lock-out