Addressable gas detection control unit GMA200-F

for DIN rail mountingprogrammablemulti-channel

Controller for Gas Detection in Refrigeration Systems and Heat Pumps
The GMA200-F from GfG is a controller for fixed gas detection systems specifically designed to monitor natural and synthetic refrigerants in refrigeration systems, cold stores and heat pumps. A single GMA200-F supports up to 64 digital GfG transmitters and can control up to four independent ventilation zones, enabling centralized monitoring and zoned ventilation control to improve safety and energy efficiency.

Gas Monitoring and Ventilation Control for Refrigeration Systems
The GMA200-F monitors up to 64 digital GfG transmitters, including up to 16 analog measuring points. Transmitters for ammonia, carbon dioxide, propane or fluorinated refrigerants can be combined within one system. By controlling ventilation in up to four independent zones, ventilation can be regulated according to demand to reduce risk and lower energy consumption.

Flexible Configuration and Control of Safety Functions
Each measuring point supports three configurable alarm levels. Operating states, alarms and faults are indicated via a backlit LC display and 20 status LEDs. System configuration is available with the optional GMA-Config software. Safety functions are implemented via eight integrated relays (six freely programmable). For larger installations the system can be expanded with up to four GMA200-RT relay modules or integrated with up to 64 digital alarm panels with audible alarms.

Key Features at a Glance:
General Information:

• Monitors up to 64 digital GfG transmitters (including up to 16 analog measuring points)
• Suitable for natural and synthetic refrigerants
• Up to eight transmitter groups with different measuring ranges
• Four independently controllable ventilation zones
• Freely configurable alarm levels and alarm functions
• Integrated event logger for alarms, faults and service events

Features:

• Eight integrated relays (six freely programmable)
• Expandable by up to 64 external relay contacts or 64 digital alarm panels
• Two digital inputs and two analog outputs
• RS-485 Modbus RTU communication
• Backlit 2.2" LC display and 20 status LEDs
• DIN rail mounting (TS35)

Optional:

• GMA200-RT relay modules (up to four modules with 16 relays each)
• Digital alarm panels with Modbus interface and audible alarm (optional Bluetooth)
• GMA200-Visual software for visualizing larger gas detection systems
• Support for a redundant 24 V DC power supply

Technical specifications:

• Monitoring capacity: up to 64 digital transmitters; up to 16 analog measuring points
• Alarm configuration: three configurable alarm levels per measuring point
• Transmitter grouping: up to eight groups with different measuring ranges
• Ventilation control: four independent ventilation zones
• Relays: 8 integrated relays (6 freely programmable); expandable with GMA200-RT modules (up to 64 additional relays)
• Alarm panels: supports up to 64 digital alarm panels (with audible alarms)
• Inputs/Outputs: 2 digital inputs, 2 analog outputs
• Communication: RS-485 Modbus RTU
• Display & indicators: 2.2" backlit LC display and 20 status LEDs
• Mounting: DIN rail (TS35)
• Logging: integrated event logger for alarms, faults and service events
• Software support: optional GMA-Config for configuration; optional GMA200-Visual for visualization
• Power: support for redundant 24 V DC power supply (optional)