Danfoss Gas detection unit Accessory Data sheet
Data Sheet
Gas detection unit
Accessory
Controller unit
Used for detecting and warning of hazardous gas
concentrations in industrial refrigeration
The gas detection Controller Unit is used for a
centralized monitoring and warning of
hazardous gas concentrations. The input
signals for the controller are collected from the
local gas detection units of the types Basic,
Premium and Heavy Duty via RS485 Fieldbus or
Analog communication. In total 96 gas
detection sensors can be handled via Fieldbus
+ 4 via Analog directly on the controller (+28
additional possible if expansion modules
added).
The Controller Unit comes with 4 alarm relays
available for external looped alarm devices.
Additional relays and sensor wiring loops is
possible by adding Expansion modules to the
controller.
Each local gas detection unit is assigned a
unique address in the Controller and by
continuous communication with the individual
GDU’s the Controller reacts on alarm signals
from the local GDU. The parameter setting and
the actual state of each local GDU can be read
in the Controller display.
AI272548380512en-000202
Gas detection unit, Accessory
Features
• For connection of up to 96 sensors via eldbus + 32 via Analog”(when 7 expansion modules added)
• Easy conguration via intuitive user-interface; helps simplify operator handling and minimize risk of operational
setting errors
• Simple commissioning by standard parameter conguration
• Flexible connection to local gas detection units by either Analog or RS485 eldbus communications
• Fieldbus wiring: Wire length up to 900 meters (2953 ft.) per segment
• 4 relays for external alarm device circuits
• Up to 7 Expansion modules possible; allows additional 7 segments with a total of 7200 meters (23622 ft.) wiring
and a total of 32 relays for alarm device circuits
• Automatic self-diagnostics to ensure correct communication and operation
• Relay for communication error
• 6 menu languages
• Password protected settings allowing authorized access only
• Service alerts on display
• Conformity to EN 50545-1
• Enables regulatory compliance with EN 378:2016, ISO 5149:2014
© Danfoss | Climate Solutions | 2022.03 AI272548380512en-000202 | 2
Description
Values
Used for product
Basic, Premium and Heavy Duty
Net weight
0.28 kg
Working temperature
-5 °C – 40 °C (23 °F – 104 °F)
Packing format
Single pack
Gas detection unit, Accessory
Portfolio overview
Figure 1: Gas detection Controller unit
Table 1: Portfolio overview
© Danfoss | Climate Solutions | 2022.03 AI272548380512en-000202 | 3
Gas detection unit, Accessory
Applications
Detecting and warning of hazardous gas concentrations in industrial refrigeration systems such as food and
beverage processing areas, cold storages, and on-board ships.
© Danfoss | Climate Solutions | 2022.03 AI272548380512en-000202 | 4
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