GfG GMA400 Controller, 128 Channels with amber strobe, 10 amp, 16"x14"x8" - 400MT-128Y

400MT-128Y GMA400 Controller, 128 Channels with amber strobe, 10 amp, 16"x14"x8" by GfG

Fixed gas detection systems, consisting of one or more central controllers and transmitters, are used in applications requiring continuous monitoring of toxic gases, combustible gases and vapors or oxygen. In situations which make standard solutions hit their limits because of the number of monitored measuring points or zones, the GMA400 controller provides new options for creating complex gas detection systems.

Up to 16 analog or 128 digital GfG transmitters can be connected to one GMA400 controller. An additional 32 virtual transmitters monitor calculated parameters, such as mean values, minimum / maximum values and environmental influences. The compact DINrail-mounted controller (T35) is installed in control cabinets or wallmounted housings.

Digital Communication on Analog Lines

ACDC is a patented technology which allows transmitters to communicate information that goes beyond the plain measured value to the central evaluation unit, using 3-wire 4-20mA line that were already in place. It also receives digital signals from the controller in return. This solution is a significant benefit to your system, as it allows you to use existing analog loops for high-speed transmission of digital data.

Using the analog cabling you already had will allow you to significantly reduce the costs of updating your system – while controllers and ACDC-capable transmitters will still be able to communicate like in a digital system.

The benefits of digital communication

• Bidirectional transmission of additional data, such as mean values or status notifications
• Maintenance of transmitters which are difficult to access using remote calibration
• Higher accuracy and immunity to interferences

Up to 16 ACDC-capable transmitters can be connected directly to the ACDC-capable GMA400. The GMA400-AT24 module lets you upgrade that number to 128. This makes the GMA400 a perfect choice for integrating modern gas detection systems into old but functional infrastructures, as well as for retrofitting or expanding them.

General information:

• Suitable for every GfG transmitter
• Monitors 1 to 128 physical transmitters and up to 32 virtual measuring points

Equipment:

• 8 integrated relays for safety concepts, fault notifications and maintenance, can be expanded by 128 additional relays
• Connection either digital (Modbus), analog or ACDC (both using 4-20 mA)
• High-resolution 2.4-inch color display
• Network interface for Modbus TCP integration and web access
• Detailed view, group view or overview options

Optional:

• Relay modules for 16 additional relays each (up to 128)
• ACDC module for 24 additional analog / ACDC transmitters (up to 128)

Approvals / certifications:

• SIL (pending)