External Boiler Controller Open/Closed Or Stage2 / Stage3; X5-03 Pin 3) - Siemens LMV50 Series Manual

2 inputs (ON/OFF or
STAGE2 / STAGE3)
( ▲ ▼ )
2 3
X5-03 pin 3 / X5-03 pin 2
LMV5x std
LMV2x3x std
LMV2x3x inv
Building Technologies
4.1.5.6 External boiler controller OPEN/CLOSED or STAGE2 / STAGE3 (X5-03
pin 2 / X5-03 pin 3)
This input serves for the connection of an external controller with contact outputs. The
input is only active when configured as External load controller.
Parameter LC_OptgMode (ExtLC X5-03)
2 operating modes are possible. The operating mode that is active depends on the
parameterization of the fuel-air ratio control system.
Multistage operation can be implemented by using additional thermostats / pressure
switches.
Parameter Operation Mode (2-stage / 3-stage)
X5-03 pin 3 X5-03 pin 2
(OPEN) (CLOSED)
0 0
0 1
1 0
1 1
X5-03 pin 3 X5-03 pin 2
(OPEN) (CLOSED)
0 0
0 1
1 0
1 1
X5-03 pin 3 X5-03 pin 2
(OPEN) (CLOSED)
0 0
0 1
1 0
1 1
Parameter Config X5-03 (LMV5x std / LMV2/3 std / LMV2/3 inv)
The burner's output can be increased or decreased by means of a 3-position step
controller output with 2 relays.
«▲» increases the output
«▼» decreases the output
If none of the 2 inputs is active, the burner's output is maintained at a constant level.
The shortest permissible positioning step is about 100 ms.
Parameter Operation Mode (modulating)
Basic Documentation LMV5...
4 Burner control
3-stage 2-stage
Stage 1 Stage 1
Stage 1 Stage 1
Stage 2 Stage 2
Stage 3 Stage 2
3-stage 2-stage
Stage 1 Stage 1
Stage 3 Stage 2
Stage 2 Stage 2
Stage 3 Stage 2
3-stage 2-stage
Stage 1 Stage 1
Stage 2 Stage 1
Stage 3 Stage 2
Stage 3 Stage 2
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CC1P7550en
22.05.2018