Programmable relay module GMA200-RT

The GMA200-RT relay module lets you expand a controller of the GMA200 series or the smaller GMA22 in a gas detection system by 16 individually programmable relays with one floating signal change-over contact each. This allows additional safety measures such as visual and audible alarms or ventilation systems to be operated via the controller. The GMA200-RT relay module comes with LED indicators and is connected to a controller via the RS-485 interface. It can be mounted on a DIN rail (TS35), in a control cabinet or in a GMA200-RTW wall-mounted housing. GfG controllers and certain transmitters have internal relays. These allow for direct connection and management of external alarm devices such as information signs, warning lights and signal horns. The same applies to measurement-controlled ventilation systems and valves. Complex gas warning systems, however, require a large number of automatic safety measures that are initiated whenever the measured values exceed or fall below set limit values. Up to four GMA200-RT relay modules can be connected to the GfG controllers via the RS-485 interface. The total number of relays per controller can thus be increased by up to 64.Extension of safety functions The GMA200-RT is equipped with 16 relays, each with a floating changeover contact. In addition to 16 external alarm devices or other measurement-controlled devices and functions, an external push button can also be connected for alarm acknowledgement. Due to the spatial separation of controller and relay module, safety measures in remote areas (up to 1200 m away) can be implemented with significantly less cabling effort.