Operation
53
300554859_002_C0 - 11/2016 - © Leybold
Function X203 Venting valve
Function
code Function
0 Always off The output is always disabled
19 Always on The output is always enabled
36 frequency dependent Default: the output is set when the start command is not set and the fre-
quency is within the two limits. When the lower limit is tripped, the output is
reset.
adjustable parameter: upper limit
adjustable parameter: lower limit
25 power failure venting Within these limits, the relay is switched off in the event of a mains power
failure.
adjustable parameter: upper limit
adjustable parameter: lower limit
41 Venting in case of power failure &
venting depending on frequency
The outlet Vent (X203) is permanently activated/controlled after connection
of the supply voltage and while the pump is coming up to speed.
Situation 1: Power cut/drop in voltage
If the power supply fails (power supply warning code error code 103), the
vent outlet (X203) is switched off between frequencies I247[1] and I248[1]
(as with 36, frequency dependent).
Situation 2: STOP command
If a STOP command is issued (control word bit = 0), the vent outlet (X203) is
switched off between frequencies P28[1] and P647[1] (as with 25, power
failure venting).
Startsignal
Steuerwort Bit
f
Untere Grenze
Obere Grenze
Ausgang
Zustandsdiagramm für Funktionscode 36
State diagram frequency dependent 36
Control word bit 00
Output
Upper limit
Lower limit
Start signal
Control word bit
Obere Grenze
Zustandsdiagramm für Funktionscode 25
Stromausfall
Ausgang
Untere Grenze
f
State diagram power failure venting (25)
Upper limit
Lower limit
Output
Power failure
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