Pilz PNOZ m1p base unit - Manual (Page 44)

Pilz GmbH & Co. KG, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany
Telephone: +49 711 3409-0, Telefax: +49 711 3409-133, E-Mail: [email protected]
4-7
4.3 Configuration in the PNOZmulti Configurator
4 Burners
4.3.2.5 Tightness control
Tightness control 4- Funktionsbeschreibung_Ueberwachungen_Dichtheitskontrolle
You can select whether to carry out tightness control. With tightness
control, the section between the two safety valves will first be vented,
then refilled and the pressure measured. The pressure is monitored at
the "GP" input.
The plant must undergo a hazard analysis to determine whether tight-
ness control is necessary. The hazard analysis should also determine
whether venting is permitted via safety valve 2.
The following configuration options are available:
 Vent via the vent valve (the vent valve is activated via the VV output)
The vent valve must be positioned as follows:
or
 Vent via safety valve 2
 Continuous vent (in which case, tightness control is not carried out)
 No tightness control and no continuous vent
It's also possible to configure when tightness control is to be carried out:
 Tightness control prior to ignition
 Tightness control after the burner has shut down. (Even with this set-
ting, tightness control will be carried out prior to ignition if the previ-
ous burner cycle was interrupted due to an error.)
Safety valve 1 Safety valve 2
Vent valve