Endress+Hauser Topclean S CPC30, Руководство по эксплуатации

Страница: 30 / 178

4 Wiring and pneumatic connection of Topclean S Topclean S
30 Hauser
4.2.4 External valve for sealing water, steam, etc. to CPG30
If you are using a Topclean with control for external valves (see nameplate, version
CPC30-x1/2/3/xxxxxxx), you can select the functions "sealing water", "sterilisation" in the
Topclean S cleaning or user programmes.
To assign the valve, select "Setup 2 > Topclean > Config. Topclean". See page 88 ff.
!
Note!
• The external valve is an ordering option. For retrofitting, contact your sales centre.
• The Ex version of Topclean S has a pneumatically controlled valve (see XA236C).
• When using an external valve, you must use the CPR40 rinse block for supply of pressurised
media.
What is sealing water?
In processes with fibrous or adhesive media, assemblies with ball valves are used to block the
medium, e.g. Cleanfit CPA473 or CPA474. To keep the rinse chamber free of medium, the sealing
water valve opens automatically before the assembly emerges from the process. The counterpres-
sure in the rinsing chamber caused by the sealing water prevents the ingress of medium into the
chamber. The sealing water pressure must be greater than the pressure of the medium. Pumping of
sealing water is started one second before the assembly moves to service position.
To connect the external valve
C07-CPC30xxx-04-12-00-xx-021.eps
ƒig. 25: Connection of external valve
Connect the external valves as follows:
"
Caution!
Make sure to use the matching supply voltage for your external valve.
Valve control Terminal CPG30 non Ex
Positive wire Terminal 41
Negative wire Terminal 42