Technical Details - thuba PS 840 Manuel

Appendix
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.
1. Level 2. Level 3. Level
Edition February 2018
Copyright
C2
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 directly):
Define the function of output O1 (terminal 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 (terminal 3/4).
See functions O1 above
Define the function of output O1 (terminal 1/2)
no (= normal open)
nc (= normal closed)
Define the function of output O2 (terminal (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
thuba Ltd., CH-4002 Basel
Switzerland
Appendix
1. Stufe 2. Stufe 3. Stufe

Technical details

General Mounting inside hazardous area
II 3G, Ex nA nC ic [pzc] IIC T6 Gc
II 3G, Ex nA nC ic [pzc] IIC T5 Gc
Ex-protection
II 3D, Ex tc ic [pzc] IIIB T85°C Dc
II 3D, Ex tc ic [pzc] IIIC T85°C Dc
–20°C ... 40°C at T6
Ambient temperatures
–20°C ... 60°C at T5
Type of protection IP65 (without considering purge medium outlet)
Housing
Dimensions H x B x T: 220 mm x 120 mm x 90 mm
Material Aluminium, lacquered / Ral 7035
electrical
Power consumption approx. 2,5 VA without solenoid valve
specifications
230 V AC, 115 V AC, 48...62 Hz ±10%
Main voltage
DC 24 V ±10%
U = 250V AC
Working circuits m
U = 250V AC
m
terminal 1-4 (potentialfrei)
U = 30V DC
m
Solenoid valve Terminal 5/6 Output voltage is equal to mains, protected by internal fuse
Min. and max. min. 0,3 Nm
clamping torque max. 0,4 Nm
Ex e Anschluss -
Min. and max. wire cross- Steep: 0,2 – 2,5 mm²
klemme
section Flexible: 0,2 – 2,5 mm²
Mounting Humidity 5–59 %, non-condensing
Edition February 2018
Copyright
C3
Beschreibung, Erläuterung
• Internal nozzle diameter [mm]:
• Minimum pressure while pre-purging [mbar]: During pre-
purging procedure the PS840 monitors a increased pressure
inside of the Ex pzc-housing to achieve the defined flow on
the output valve. This increased pressure is monitored with
this parameter (range = 7.0 mbar ... max. pressure)
Minimum pressure at normal operation [mbar]:
Monitored minimum pressure
Maximum pressure at normal operation [mbar]:
Monitored maximum pressure
Signal pressure at normal operation [mbar]:
Menu code: Code word to start the main menu. Ex works:
'0001'
It is not possible to deactivate this code with '0000'.
Bypass code: Code word to start bypass mode.
The code can be disabled with '0000'. The sequence '9999'
disables the bypass in general
T = 40°C
a
T = 60°C
a
T = 60°C
a
T = 60°C
a
I = 5A bei AC1 P = 1500VA
m m
I = 1,2A bei AC15 P = 300VA
m m
I = 5A bei DC1 P = 150W
m m
thuba Ltd., CH-4002 Basel
Switzerland