The devices of the Dräger REGARD 3900 Series Gas Systems can be used as standalone controllers. It is possible to configure up to 16 measuring channels. In addition, the modular setup enables you to customize the control units to the demands of your plant. You can also embed further features to existing alarms.
Benefits:
Input modules
It is possible to connect up to four 4 to 20 mA transmitters with 2 or 3-core cables to an input module. Up to a total of four input modules per controller can be installed. Each module is populated with three relays.
Relay module
You can add 2 relay modules to the controller of the Dräger REGARD® 3900 Series Gas Systems. Each module is populated with 8 relays. The first relay is dedicated as a “Fault” relay and cannot be reconfigured. The remaining 7 relays can be configured as “Single”, “Common” or “Voting” alarms.
Output module (Repeater module)
Each 4 to 20 mA output repeats the signal of up to 8 inputs. This allows indication or recording of gas levels by other control units. You can install up to 2 analog output modules.
Configuration
You configure your control unit quickly and easily with the configuration software Config. 3900 via laptop or PC. For new installations the configuration is prepared offline and uploaded during the commissioning.
Mounting and installation
The robust housing of the Dräger REGARD 3900 and 3920 is dust-tight and protected against water jets (IP 65). Thus these control units can be installed in safe area. The Draeger REGARD 3910 is equipped with built-in display and backplane. You can easily mount it into a cabinet. The modules can be installed there as well.
Gateway solution
The Dräger REGARD 3900 Modbus Gateway is an interface that converts a CAN bus protocol into a Modbus RTU protocol. Due to this factor, the gateway allows the communication between the control unit of the REGARD 3900 series (CAN bus) with RVP 3900 (Remote Visualization Panel) or other systems (Modbus RTU).
