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Building Technologies Division
Basic Documentation LME7...
CC1P7105en
Infrastructure & Cities Sector
18 PME73.831…
29.11.2011
Phase
number
Function
LOC
Lockout shutdown phase
OFF
Standby, waiting for heat request
oP
Operation, modulating operation
oP1
Interval to release of preset load controller (analog or 3-position step input)
01
Undervoltage
02
Safety loop open
04
Extraneous light on burner startup (timeout/lockout after 30 seconds)
08
Power ON/test phase (e.g. detector test)
10
Shutdown, actuator travels to the CLOSED position (home run)
21
Safety valve ON, air pressure switch OFF, actuator travels to the CLOSED
position
22
Part 1: Fan motor ON
Part 2: Specified time air pressure switch
Message (timeout), stabelization of air pressure switch
24
Actuator in prepurge position fahren
30
Part 1: Prepurge time without flame simulation test
Valve proving when…
parameter 241.00 = 1 after power ON, lockout, or
parameter 234 (postpurge time) = 0 second or
parameter 241.01 = 1
Part 2: Prepurge time with flame simulation test
36
Part 1: Actuator opens to a position > ignition load
Part 2: Actuator closes until ignition load position is reached
38
Preignition time
40
Postignition time, parameter 257 + 0.3 seconds
42
Flame detection
44
Interval: End of ignition safety time and fuel valve 2 ON
50
2nd safety time
54
Parameter 259.01: Actuator opens to a position > low-fire
Parameter 260: Actuator closes until low-fire position is reached
72
Operation is ended, check if valve proving shall be conducted
74
Postpurging
80
Test space is evacuated
81
Proving time fuel valve 1
82
Test space is filled
83
Proving time fuel valve 2
90
Pressure switch-min open
→
safety shutdown
*)
During the actuator running phases, the actuator feedback signal must be
OFF first, then ON.
*1
Valve proving is conducted when…
- parameter 241.00 = 1 and parameter 241.02 = 1, or
- parameter 241.00 = 1 and parameter 241.01 = 0
*2
Valve proving is conducted when…
- parameter 241.00 = 1 and parameter 241.02 = 1, or
- parameter 241.00 = 1 and parameter 241.01 = 1
*3
Valve proving is not conducted
*4
Valve proving only in fuel trains
G
and
Gp1
Key to phases