Siemens LMV36.520A1 Basic Documentation page 55

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Building Technologies Division
Infrastructure & Citiies Sector
Pressure switch-max-oil
In all types of oil trains, the maximum oil pressure is monitored from phase 22. If the
maximum oil pressure is exceeded after the maximum time (parameter 214) has
elapsed, or during the subsequent phases, the system initiates lockout.
No. Parameter
214 Max. time start release
Error Diagnostic
code code
14 0
1
21 0
During the safety times (TSA1 / TSA2), the signal from pressure switch-max is only
assessed after a certain period of time has elapsed to ignore the pressure shocks that
occur the moment the valves open.
No. Parameter
269 Oil: Time to respond to pressure faults within safety time 1 (TSA1) and safety
time 2 (TSA2)
369 Fuel 1 oil: Time to respond to pressure faults within safety time 1 (TSA1) and
safety time 2 (TSA2)
The terminal can also be used for POC (Proof of Closure) (refer to chapter Sequence
diagrams).
No. Parameter
Oil: Pressure switch-max / POC input
0 = inactive
277
1 = pressure switch-max
2 = POC
Fuel 1 oil: Pressure switch-max / POC input
0 = inactive
377
1 = pressure switch-max
2 = POC
Note
If the input is used for POC, pressure switch-max can be included in the safety loop.
In that case, pressure switch-max must not be fitted between the valves, but after
them.
Start release oil
If the input is simultaneously used as a start release input (e.g. for an air supply
damper), the latter can be connected in series with the pressure switch.
If the input is parameterized for POC, it cannot be used as a start release input.
Basic documentation LMV36...
7 Basic unit
Meaning for the LMV36... system
POC open
POC closed
Pressure switch-max (Pmax): Max. oil pressure exceeded
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CC1P7544en
25.09.2013