Siemens LME7 Series - Page 52

LME Series
Technical Instructions
Document No. LME-1000
Lockout
Standby, Waiting for Call
for Heat
Test - Air Pressure Switch
Open
Blower On
D
rive to Prepurge
Position
Test - Air Pressure Switch
Closed
Prepurge (Note 3)
D
rive to Ignition Position
Preignition
Trial for Ignition
Flame Detection
Interval 1: Pilot
Stabilization
Safety Time 2: Pilot and
Main Overlap
Interval 2: Main
Stabilization
Operation
Drive to Postpurge
Position
Postpurge (Note 4)
H
ome Run
Evacuate
Atmospheric Test
Fill
Pressure Test
Phase LOC OFF 21 22 24 22 30 36 38 40 42 44 50 oP1 oP 72 74 10 80 81 82 83
Param. 259 224 225 260 226 257 230 231 232 240 234 242 243 244 245
OPER-
ATION
Terminal Description Notes
X3-04.5 Main Voltage
X3-04.1 Safety Loop
X5-03.1 Burner On M
X3-02.1 Air Pressure Switch X M
X5-01.2 Gas Pressure Switch(es)
X9-04.2 Valve Proving Pressure Switch X
X2-02.4 POC
X2-02.3 POC Source X X
X6-03.3 Safety Valve X X
X2-01.3 Blower X X X X
X4-02.3 Ignition Transformer X X X X X X X X X X X X X X X X X X X X
X7-01.3 Pilot Valve Note 1 X X X X X X X X X X X X X X X X X X
X7-02.3 Main Valve V1 X X X X X X X X X X X X X X X
X7-04.4 Main Valve V2 Note 1 X X X X X X X X X X X X X X X X X X
X2-03.3 Alarm X X X X X X X X X X X X X X X X X X X X X
X2-09.3 Drive to High Fire X X X X X X X X X X X X X X X X X X X
X2-09.2 Drive to Ignition / Low Fire X X X X X X X X X X X X X X X
X2-09.1 Drive Closed X X X X X X X X X X X X X X X X X X X X
X2-09.4 Position Feedback M M M M M
Legend :
Energized X De-energized
Energized or de-energized M
Must be energized by end of phase
ACTUATOR
Flame Signal
OUTPUTS
X
STARTUP VALVE PROVING
X
SAFETY
TIME 1
PME73.840A1 Phase Diagram
SHUTDOWN
INPUTS
X10-05.2
X10-06.1/2
X
SCC Inc. Page 12 Section 3