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Drager Regard 3900 Control System


The Drager Regard 3900 Control System is a standalone and autonomous control system for up to 16 gas detectors. The Regard 3900 monitors the concentration of toxic gases, oxygen and combustible gases and vapours, and is fully configurable.

Flexible design - The Drager Regard 3900 Control System can be equipped with up to four 4 - 20 mA input cards. Each input card can be connected to up to four gas detectors, either 2 or 3 wire, giving a maximum of 16 gas detectors per each Regard 3900. Each input module is equipped with three alarm relays. These relays are designated as common alarms for the corresponding input card for "Fault", "1st alarm" and "2nd alarm". The 1st and 2nd alarm relays are fully configurable and can be set up as rising or falling and latching or non-latching. In addition, the Drager Regard 3900 Control System can be equipped with up to two relay modules. Each relay module has eight additional relays. In accordance with the ATEX directive, the first relay is always configured as a fault relay and cannot be changed. The other seven relays can be configured as individual, common or voting alarms. They can either operate as normally open or normally closed relays. The alarm relays are acknowledged by operating a button at the front of the Drager Regard 3900 Control System.

Quick and easy configuration - Quick and easy configuration using a laptop or PC can be achieved using the Config 3900 software. With new installations, the configuration can initially be carried out online and then loaded during commissioning. During maintenance the system configuration can be downloaded from the device to a PC for checking. The appropriate connection cable and the required software are available as accessories.

Robust enclosure - The installation of the Drager Regard 3900 Control System can be at virtually any location within safe areas, using the robust IP65 enclosure.



Datasheet

Ordering Information


Dräger REGARD 3900 Basic Unit 4208780

Dräger REGARD 3900 4-20 Module 4208782

Dräger REGARD 3900 Relay Module 4208784

Dräger REGARD 3900 RS232 Interface 4208785

Dräger REGARD 3900 4-20mA Repeat Output Board 4208797



Drager

Please note - Product designs and specifications are subject to change without notice. The user is responsible for determining the suitability of this product.

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