ACHEMA Daily 2022 #2

38
ACHEMA DAILY #2 | TUESDAY, AUGUST 23, 2022
Instrumentation/Process Automation
Control panels
Modular Ex p System with just Three Basic Components
The modular control and monitoring system x621 is a new solution for the flexible assembly of Ex p control cabinets
With the Ex p x621 control and
monitoring system (photo), the
explosion protection specialist
R. Stahl now presents an innovative
modular solution for easier
construction of pressurized
control panels with Ex p type of
protection. While conventional
systems for a range of panel
sizes and construction types
use a wide range of dedicated
devices, R. Stahl has reduced
this complexity to three basic
components in uniform versions
for its new system solution.
The combination of an
Ex p control unit, Ex p pressure
3_Softing_cav_23-08-2022_226x91mm.p1.pdf - August 8, 2022 x
monitors that simultaneously
also function as pressure outlets,
and Ex p purge valves with
digital and proportional control
is able to meet all requirements,
from very small enclosures
with a volume of 10 L to Ex
p control cabinets with volumes
of 4,000 L. In this way,
the Ex p controller makes control
processes available for all
control cabinet sizes and enables
them to be adjusted
easily to meet users‘ requirements.
If, for instance, the
purge pressure or purge time
needs to be reduced for larger
Source: R.Stahl
control panels, all it takes is the
installation of additional Ex p
pressure monitors.
The use of a suitable number of
a single pressure monitor variant
reduces expenditure and
work for both engineering and
storage. The outstanding precision
of the pressure sensors
used also enables operation
close to the pressure switch-off
threshold, which keeps leakage
to a minimum and enables extremely
cost-effective continuous
operation. The purge valve
control, which is also integrated
in the control unit,
further simplifies the process
in either digital or proportional
mode. Moreover, effective Ex p
vortex air coolers are available
for cooling Ex p cabinets, the
cooling power of which can be
scaled by installing additional
structurally identical versions,
in accordance with the same
simple principle that applies to
pressure monitors. The Ex p bypass
circuit on the control unit,
in which the electronics operate
intrinsically safely, significantly
reduces the required expenditure
for inspection and
maintenance work. The new
commissioning process eliminates
the need for costly test
steps after maintenance and
retrofitting work, and guarantees
explosion protection at all
times. The certified monitoring
Besuchen Sie das cav-Team in Halle 11.1, Stand E13
system for control panels, is
used in Ex Zone 1/21 in accordance
with IEC/EN/DIN
60079–2 as a redundant version
and in Ex Zone 2/22 as a
more cost-effective simple version.
The compact design of the
components and the state-ofthe-art
operating interface of
the Ex p controller enable
space-saving installation and
easy commissioning. Due to
the external mounting of the
slim Ex p control unit on the
control panel side wall, the full
installation volume is reserved
for the application. The Ex p
control unit made of resistant
glass-fiber reinforced polyester
is available with or without
viewing window. ond
R. Stahl Schaltergeräte
Hall 11.0, Stand G4
Digital Asset Management
for HART Devices
With our connectivity solutions for asset
management, we support you in improving
plant productivity and increasing lifecycles.
You will find us in
Hall 11.0, Booth E16.
https://industrial.softing.com