Pfeiffer Vacuum HISCROLL 12, Operating Instructions Manual

Page: 50 / 84

8.8.1 Controlling gas ballast valve with a pressure sensor
Automatic valve control
The solenoid valve opens automatically depending on the parametrization and the respec-
tive operating status.
● Observe the preset parameters before commissioning.
RS-485
[P052]
GB-Ventil
RS-485
[P030]
Ventilmodus
RS-485
[P010]
HiScroll ein/aus
RS-485
[P740]
Druckwert
Ventilsteuerung
0
[deaktiviert]
1
[aktiviert]
0
[auto]
[gültig]
1
[geschlossen]
2
[offen]
permanent
geschlossen
permanent
geschlossen
permanent
offen
1
[ein]
geschlossen
> 3 mbar
[P:721]
< 3 mbar
p
t
GB
permanent offen
Fig. 17: Pressure-dependent gas ballast valve control in automatic mode
Procedure
► Set the desired opening interval for the gas ballast valve with
[P:721] .
Sequence in automatic mode for version with pressure sensor
● The gas ballast valve opens each time the pump is started. If the pressure value falls to ≤ 3 mbar ,
the solenoid valve closes after the time set in [P:721] .
● The gas ballast valve is permanently open if the pressure value remains
> 3 mbar .
8.8.2 Controlling gas ballast valve without a pressure sensor
Automatic valve control
The solenoid valve opens automatically depending on the parametrization and the respec-
tive operating status.
● Observe the preset parameters before commissioning.
RS-485
[P052]
GB-Ventil
RS-485
[P030]
Ventilmodus
RS-485
[P010]
HiScroll ein/aus
RS-485
[P740]
Druckwert
Ventilsteuerung
0
[deaktiviert]
1
[aktiviert]
0
[auto]
[ungültig]
1
[geschlossen]
2
[offen]
permanent
geschlossen
permanent
geschlossen
permanent
offen
15 min
[P:721]
offen
geschlossen
1
[ein]
Fig. 18: Gas ballast valve control in automatic mode
Operation
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