Statox 502 Control Module
Page 4 of 40
Issue 1/2015
Product description
The Statox 502 Control Module can be used in two different modes:
As a
Control Module
it supplies the sensor heads for toxic or combustible gases with energy and handles
their signal. It can be configured for different gases and measuring ranges. The Statox 502 Control Module
displays the concentration and converts it into a 4 – 20 mA signal at the analog output. If one of the
programmed alarm thresholds is exceeded, the relevant LED goes on, the relevant relay switches and the
relays status is communicated on the communication bus. The alarms can be set latching or non - latching.
Latching alarms can be reset by pushing the reset button or by an external contact.
Please note:
Sensor heads for toxic gases and oxygen (Statox 501/S and Statox 505) are protected in concept Ex i
(intrinsic safety) and must be connected via an intrinsically safe repeater, as far as they are intended
to be installed in a hazardous area (Zone 1 or 2).
Sensor heads for combustible gases, CO
2
and VOC (Statox 501 HRC, ARE, LCIR, MCIR, Infratox, and
PID) are protected in concept Ex e (enhanced safety) or Ex d (flameproof). They can be connected
directly to the Control Module, even if they are intended to operate in Zone 1 or 2.
The Statox 502 can also be operated as
Common Alarm Module
. It collects the alarm signals (A1/A2/SF) of
up to 25 connected control modules and generates a common alarm on LEDs, relays and its analog output.
This way you can set up a multi - channel gas detection system. Prerequisite is that all modules are connected
to each other via bus adapter. An Error from the Control Module or the connected sensor heads will appear
on the respective Control Module as well as on the Common Alarm Module.
If power supply is provided via the optional bus plugs, it is possible to replace the modules during operation
without effort.
