Siemens LME7 Series Technical Instructions

LME Series
Technical Instructions
LME-1000
Lockout
Standby, Waiting for Call
for Heat
Test - Air Pressure Switch
Open
Blower On
P
repurge
Trial for Ignition
Flame Detection
Interval 1: Pilot
Stabilization
Safety Time 2: Main and
Pilot Overlap
Interval 2: Main
Stabilization
Operation
P
ostpurge
Home Run
Phase LOC OFF 21 22 30 40 42 44 50 50 oP1 74 10
Param. 225 257 230 231 254 240 234
OPER-
ATION
Terminal Description Notes
X3-04.5 Main Voltage
X3-04.1 Safety Loop X X X
X5-03.1 Burner On M
X3-02.1 Air Pressure Switch X M
X5-01.2 Gas Pressure Switch(es)
POC (P237 = 1)
POC (P237 = 2) X
X2-02.3 POC Source X X X
X6-03.3 Safety Valve X 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
X7-04.4 Main Valve V1 Note 1 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
Pilot Valve (P247 = 0) Note 1 X X X X X X X X X
Pilot Valve (P247 = 1) X X X X X X X
Legend :
Energized M
Energized or de-energized
X De-energized
Must be energized by end of phase
X2-02.4
X7-01.3
PME71.111A1 Phase Diagram
SHUTDOWN
SAFETY
TIME 1
STARTUP
Flame Signal
OUTPUTS
X X
X10-05.2
X10-06.1/2
INPUTS
SCC Inc. Page 12 Section 2

Siemens LME7 Series Specifications

General

Brand	Siemens
Model	LME7 Series
Category	Controller
Language	English