The remote sensing system FTS14

Modular RS485 bus of the next generation

Combine devices and functions flexibly – use the new features offered by the Series 14

The bus and power supply connections on the input module FTS14EM, communication interface FTS14KS and actuators as DIN rail mounted devices are very simply cross-wired by means of jumpers. A customary screened 4-wire telephone line acts as bus line to connect several distributors together.

The FTS14 bus and the input module FTS14EM use exactly the same telegram structure as the Wireless Building DIN rail mounted devices of the Series 14 and are therefore directly combinable with actuators and other

components in the Series 14. All the necessary functions of current production are then immediately available.

The power supply in the FTS14KS decouples the electronics of all connected devices from the 230V power supply grid. As a result, the devices are not exposed to voltage peaks and other faults which are becoming ­increasingly frequent on mains power supplies. This protection significantly increases the expected service life of the ­devices.

Every FTS14EM with only two pitches width has 10 inputs for either conventional pushbuttons, window/door-contacts or motion sensors. Thanks to the electrically isolated universal control voltage from 8 to 230V UC, the inputs can be controlled either directly with the mains voltage or with low voltage. A separate switch mode power supply unit, e.g. the SNT12 which is only one pitch unit wide, must then be used for 12V or 24V. Control power requirement is only 0.05 or 0.2 watts per pushbutton when a pushbutton is operated. All input terminals (E1 to E10) are arranged in the lower terminal blocks and a terminal for the common pushbutton reference potential (-E) is located on the upper terminal block.

The FTS14EM can be configured by 2 rotary switches in such a way that max. 50 FTS14EM devices can be connected to max. 500 pushbuttons in a bus installation. In addition the pushbutton inputs of each FTS14EM are set by rotary switch either as universal pushbuttons or in pairs as direction pushbuttons. The telegram of each pushbutton input in the entire bus is available over the bus system simultaneously for all actuators connected. It is therefore possible to install central and group pushbuttons rapidly and using few wires. The related pushbuttons are simply taught-in in the required actuators on the bus.

The connected actuators can also be configured with the PC tool PCT14 via communication interface of the FTS14KS.

Instead of the FTS14KS a wireless antenna module FAM14 (from the Wireless Building System), which is only two pitch units wide, can also be installed. Actuators can then be activated via the FTS14EM by wireless push­buttons, hand-held transmitters and wireless sensors as well as conventional pushbuttons. The bidirectional FAM14 also permits a GFVS-Safe II server to evaluate feedback messages from the actuators transferred by wireless. Each actuator status is then displayed and can also be changed. Connecting the HOLD terminals of all devices regulates bus access and prevents collisions.

The pushbutton gateway FTS14TG, which is only two pitch units wide, can feed telegrams from the 4-way bus pushbuttons B4T65, B4FT65 and pushbutton coupler FTS61BTK connected by 2-wire pushbutton bus to conventional pushbuttons connected to the bus. Data transfer and power supply take place simultaneously over 2 wires only. This avoids many single pushbutton control lines. This avoids many single pushbutton control lines. An FTS14EM device is then not required.

Pushbutton telegrams on the bus can be sent directly to the Wireless Building system with a wireless output module FTS14FA, e.g. to control decentral actuators.

The multiple gateway FGW14, which is only one pitch unit wide, can set up connections to the computer GFVS-Safe II, bus components of the previous Series 12 and an RS232 interface. In addition to this, two RS485 buses from Series 14 can be connected.

All optional possibilities can be combined as required: FTS14EM with actuators, the wireless antenna module FAM14, the pushbutton wireless output module FTS14FA and the pushbutton gateway FTS14TG for connection to pushbutton couplers FTS61BTK.

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