Manual BVS 19 ATEX E 080 X
C2
Edition March 2020
thuba Ltd., CH-4002 Basel
Copyright
Switzerland
1. Level
2. Level
3. Level
Description, Explanation
Define the language shown on the display of the PS840 in this
menu item.
Available languages are: German, English, French, Dutch,
Spanish
„Purg. Y.“
means that the Ex pzc-housing will be pre-purged
before “Ex Ok” Message is set
„Purg.N.“
means that the housing will not be pre-purged. The
“Ex Ok” Message is set and the min. Pressure is monitored
Automatic purging time Yes:
The PS840 calculates the purging time out of pre-pressure,
nozzle diameter (See. section 3.2.2 )
Automatic purging time No
(= Enter the purging time direct-
ly):
Define the function of output
O1 (terminals 1/2).
Explosion protection is ok:
The output is set, if the pressure is higher than minimum.
Bypass-output:
The output is high, if the bypass is active
Purging-output:
The output is high as long the pre-purging procedure is
running
Signal pressure-output:
the output is high, if the actual pressure inside of the Ex pzc-
housing is below the signal pressure level
Maximum pressure-output:
the output is high, if the actual pressure inside of the Ex pzc-
housing is higher the maximum pressure level
Define the function of output
O2 (terminals 3/4).
See functions
O1 above
Define the function of output
O1 (terminals 1/2)
no (= normal open)
nc (= normal closed)
Define the function of output
O2 (terminals 3/4)
no (= normal open)
nc (= normal closed)
Purge time [h/min/sec]:
Enter the purge time directly. The
parameter only appears, if “automatic = no “ is chosen.
If „automatic = Yes“ the following parameters will be asked:
•
Purge volume [dm³]:
•
Pre-pressure [bar]:
pressure of the purge medium pipe or
pre pressure controller
In the following table below shows explanations of the menu items. The table works as a refer- ence
guide for programming the desired system structure and to set the appropriate parameters correctly.
The menu items are roughly sorted by class.
Please note that the viewable conditions of parameters are not included.
Structur
Purg. Y.
O1 Func.
Purg. N.
Auto. Y
Auto
Auto. N.
none
Language
O-Ex-ok
O-Purg.
O-.Signal
O2 Funct.
O-Pmax
none
O1 no/nc.
no
no
O2 no/nc.
Pur. Time
Purging
Param.
Pre.Pres
Pur. Vol.
O-Bypas
Summary of Contents for PS 830
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