LME Series
Technical Instructions
LME-1000
PW Level Default Range Description
Parameter
Number
PME75.
811A1
PME75.
812A1
LEGEND - Password Level: S = Service; O = OEM; S/O = View - Service, Write - OEM; Info = Info Menu; Ser = Service Menu
Shaded Parameters = Frequently Used
Parameter Name
224
Time Air Pressure
Switch
13.818 sec 0-13.818 sec
Once the LME7 reaches phase 22 for the second time (between phases 24 and 30), this sets the length of
time the LME7 will wait for air pressure switch input X3-02.1 to become energized before a lockout occurs
due to lack of air pressure. As soon as the switch is made, the sequence progresses.
• •
225.00 Prepurge Time 29.106 sec 0-1237 sec Sets the prepurge time (length of phase 30) along with parameter 225.01.
• •
225.01 Prepurge Multiplier 1 1-255
Sets a multiplier for the prepurge time. The actual prepurge time (length of phase 30) is determined by
multiplying parameter 225.00 and this parameter.
• •
230 Pilot Stabilization Time 3.234 sec 0-74.97 sec
This setting defines the pilot stabilizing period if a pilot is used. During this period, only the pilot valve is
open. The spark is de-energized. Sets the length of phase 44.
• •
231
Pilot and Main Overlap
Time
9.996 sec 0-74.97 sec
When a fuel train with a pilot is used, this setting defines the overlap of the pilot (output X7-01.3) and the
main fuel valves. After this time expires, the pilot is de-energized. Sets the length of phase 50.
• •
232 Main Stabilization Time 2.058 sec 2.058-74.97 sec
This setting defines the main stabilizing period if a pilot is used. During this period, only the main valve is
open. The pilot valve is de-energized. Sets the length of phase 52.
• •
234.00 Postpurge Time 19.404 sec 0-1237 sec Sets the postpurge time (length of phase 74) along wth parameter 234.01.
• •
234.01 Postpurge Multiplier 1 1-255
Sets a multiplier for the postpurge time. The actual postpurge time (length of phase 74) is determined by
multiplying parameter 234.00 and this parameter.
• •
235.00
Air Pressure Switch
Evaluation
1 0-1
Sets the behavior of the air pressure switch input X3-02.1.
0 = Air pressure switch is not evaluated during operation (lack of air pressure has no effect)
1 = Air pressure switch is evaluated during operation (lack of air pressure causes a lockout)
• •
235.01
Response Time Air
Pressure Switch
0.294 sec 0-2.058 sec
Sets the amount of time that the air pressure switch input X3-02.1 can be de-energized before a lockout
occurs. The LME7 has a base time of 0.7 seconds. This setting adds time to the base time.
• •
236
Low Gas Pressure
Evaluation
0 0-1
Sets the behavior of the low gas pressure switch input X5-01.2.
0 = Low gas pressure switch is evaluated during startup and operation (phases 30-70).
1 = Low gas pressure switch is only evaluated when main fuel valves are open (phases 52-70). This is
useful when the low gas pressure switch is mounted downstream of the main fuel valves for CSA B149.3
compliance.
• •
237.00 POC Switch 1 0-2
This setting defines the function of POC switch input X2-02.4.
0 = deactivated
1 = activated (verify POC switch is closed on startup and shutdown)
2 = activated (verify POC switch is closed on startup and shutdown, and verify POC switch is open during
• •
237.01
High Gas Pressure
Switch
S/O 0 0-1
PME75.811A1: Sets the function of input X2-02.4.
0 = POC
1 = high gas pressure switch
PME75.812A1: Activates or deactivates input X9-04.2 for use with a high gas pressure switch.
0 = deactivated
1 = activated
• •
S/O
S
SCC Inc. Page 5 Section 4
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