4
June 2012
Gas Controller
AUTOMATIKPRODUKTER
Digital Gas Controller System CGD-05
1 Application Intended for Use
CGD-05, Gas Controller is used for monitoring and warning of toxic and combustible gases and vapours in the
ambient air
.
The CGD-05 Gas Controller fulfils the requirements according to VDI 2053 (January 04),
ÖNORM and NVN 2443 for the stationary monitoring of carbon monoxide (CO), nitrogen dioxide (NO
2
)
and combustible gases in underground garages, tunnels, go-cart race courses etc. The CGD-05 Gas
Controller also meets the requirements according to EN 378, VBG 20 and the guidelines "Safety
requirements for ammonia refrigeration systems". The Gas Controller can be used as well for monitoring
lots of other gases.
The intended sites are all areas being directly connected to the public low voltage supply, e.g. residential,
commercial and industrial ranges as well as small enterprises (according to EN55 02). The Gas Controller
may only be used in ambient conditions as specified in the Technical Data.
The Gas Controller CGD-05 must not be used in potentially explosive atmospheres.
2 Description
The Gas Controller is a measuring and warning controller for the continuous monitoring of different toxic or
combustible gases and vapours as well as of Freons. The CG-05 is suitable for the connection of up to 98
digital transmitters via the 2-wire bus. In the 48/48 MP addressing mode you can connect 48 transmitters with 4
to 20 mA input for the connection of an analog transmitter. There are 4 analog inputs available at each PE-05
module in addition. The controller can be employed as analog, as analog/digital or as digital controller. The
total number of connected transmitters, however, may not exceed 96 respectively 98 transmitters.
Up to five free programmable alarm thresholds are available for each transmitter. For transmitting the alarms
there are up to 30 relays with potential-free change-over contact.
Comfortable and easy operation of the Gas Controller is done via the logical menu structure. A number of
integrated parameters enables the realisation of various requirements in the gas measuring technique.
Configuration is menu-driven via the keypad. For fast and easy configuration, you can use the configuration
software CGD-EasyConf.
Prior to commissioning please consider the guidelines for wiring and commissioning of the hardware.
2.1
Normal Mode
In normal mode, the gas concentrations of the active transmitters are continuously polled and displayed at the
LCD display in a scrolling way. The controller also monitors the communication to all active transmitters and
modules.
2.2
Alarm Mode
If the gas concentration reaches the programmed alarm threshold, the alarm is started, the assigned alarm
relay activated and the alarm LED (orange for alarm1, red for alarm 2 + n) starts to flash. The set alarm can be
read from the menu Alarm Status. When the gas concentration falls below the alarm threshold plus hysteresis,
the alarm is automatically reset. In latching mode, the alarm has to be reset manually in the menu Relay Status
or via a digital input.
2.3
Fault Mode
If the controller detects an incorrect communication at an active transmitter or module, or if a signal is outside
the admissible range (< 3 mA - > 22 mA), the assigned fault relay is set and the error LED starts to flash. The
error is displayed in the menu Error Status in clear text. After removal of the cause, the error message has to
be acknowledged manually in the menu Error Status.
