Gas leak sensor gas detection control unit GMA200-F

LCD displaymulti-channeladdressable

Controller for gas detection in refrigeration systems and heat pumps
The GMA200-F is a controller for fixed gas detection systems specifically developed for monitoring natural and synthetic refrigerants. A single GMA200-F controller can monitor up to 64 digital GfG transmitters and individually control up to four ventilation zones. The system is designed for safe and energy-efficient operation of refrigeration systems, cold stores and heat pumps.

Gas Monitoring and Ventilation Control
The GMA200-F monitors up to 64 digital GfG transmitters (including up to 16 analog measuring points). Different transmitters for gases such as ammonia, carbon dioxide, propane or fluorinated refrigerants can be combined within one system. Measuring ranges and alarm thresholds are freely configurable to adapt to various refrigerants, system designs and national regulations. Ventilation control for up to four independent zones enables demand-driven ventilation, increasing safety while reducing energy consumption.

Flexible Configuration and Control of Safety Functions
The device provides three freely configurable alarm levels per measuring point for targeted responses to leaks. A backlit 2.2" LC display and 20 status LEDs indicate operating conditions, alarms, faults and the status of relays and ventilation zones. With optional configuration software, the complete gas detection system can be configured and adapted to installation requirements. Safety functions are implemented via eight integrated relays (six freely programmable). For larger installations, the controller can be expanded with up to four relay modules (GMA200-RT), supplying up to 64 additional relay contacts. Alternatively or additionally, up to 64 digital alarm panels with audible alarms can be integrated for flexible adaptation to diverse safety concepts and plant configurations.

Key Features at a Glance

• 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
• GMA-Config software for system configuration

Technical specifications

• Maximum number of digital transmitters: 64
• Analog measuring points supported: up to 16
• Transmitter groups: up to 8 (different measuring ranges)
• Independently controllable ventilation zones: 4
• Configurable alarm levels per measuring point: 3
• Integrated relays: 8 (6 freely programmable)
• External relay extension: up to 64 contacts via GMA200-RT
• Digital alarm panels: up to 64 (with audible alarm)
• I/Os: 2 digital inputs, 2 analog outputs
• Communication: RS-485 Modbus RTU
• Display: 2.2" backlit LC display and 20 status LEDs
• Event logging: event log for alarms, faults and service events
• Mounting: DIN rail TS35
• Power supply: optional support for redundant 24 V DC supply