Oil Pump / Magnetic Clutch, Type No-Si (X6-02); Start Signal Or Pressure Switch Relief Valve, Type No-Si (X4-03) - Siemens LMV50 Series Manual

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4.1.6.7 Oil pump / magnetic clutch, type No-SI (X6-02)

Applications with a separate oil pump or magnetic clutch
This output can be used for connecting an oil pump or a magnetic clutch for an oil
pump. The switch-on time can be parameterized together with preignition. In the case
of dual-fuel burners, short preignition must be used (phase 38). In the case of long
preignition, the oil pump is switched on in phase 22 together with ignition, in the case of
short preignition, in phase 38. With the heavy oil programs (heavy oil HO, heavy oil with
gas pilot), the oil pump with short preignition is already activated in phase 36 to ensure
oil pressure is available when circulation starts.
Parameter OilPumpCoupling (Magneticcoupl)
IgnOilPumpStart (on in Ph38)
Single-fuel applications with direct-coupled oil pump
On applications where the oil pump is coupled directly to the fan motor, the oil shutoff
valve (SV-oil) can be connected to that output. The output is always activated when the
fan operates, plus another 15 seconds after the fan has been switched off. If
Directcoupl is selected, long preignition becomes automatically active. Direct coupling
is only permitted in the case of oil-firing alone.
Note!
With both variants, parameter OnTmeOilIgnition can be left set to on in Ph38. In that
case, short or long preignition will automatically be correct, depending on the selection
of OilPumpCoupling.
Parameter OilPumpCoupling (Directcoupl)

4.1.6.8 Start signal or pressure switch relief valve, type No-SI (X4-03)

Depending on the parameterization, the output can be used for a start signal or for an
pressure switch relief valve.
The start signal is used for controlling an outside air damper. When actuating the fresh
outside air damper's end switch, which is fed back to the start release inputs of the
LMV5, the startup sequence is continued
Parameter Start/PS-Valve (StartSignal)
In this configuration, a 3-port valve for testing (no pressure) the air pressure switch
(APS) can be connected. During the test, the valve is controlled
Parameter Start/PS-Valve (PS Relief)
When using this configuration, a valve for testing (no pressure) the air pressure switch
(APS) can be connected. The valve is controlled while the fan is running. During the
test, the valve is deenergized.
This valve is required when parameterizing NormDirectStart (NormalStart / DirectStart)
↑ direct start for testing the air pressure switch if ContinuousPurge is parameterized
(activated) ↑ Continuous purging
Parameter Start/PS-Valvel (PS Relief_Inv)
Basic Documentation LMV5...
4 Burner control
CC1P7550en
22.05.2018