Expansion module to supplement an EASYLAB base component (controller TCU3 or adapter module TAM) with a LonWorks interface to link rooms or individual volume flow controllers to the central BMS.

The expansion module includes a LonWorks transceiver FTT-10A (free topology, twisted pair), a service pin push button for LonWorks integration, and indicator lights for 'sending data' and 'receiving data'.

Special characteristics

• LonWorks free topology network with an arbitrary number of branches (star, line, and arbitrary combinations)
• Communication only using standard network variables (SNVT)
• Data interface for an EASYLAB controller or for an EASYLAB room with different functional profiles
• System integration (binding) into the LonWorks network is required

Technical data

• Communication: LonWorks-Transceiver FTT-10A, free topology, twisted pair
• Connection to LonWorks using the double-stack terminal blocks

Data points for a single controller

• Volume flow rate actual and setpoint values
• Damper blade position
• Operating mode
• Alarm/status messages
• Total supply air and total extract air actual values (room)
• Evaluated damper blade positions for all controllers in a room
• Number of controllers within the EASYLAB system
• Integration of volume flows
• Status of the digital inputs and outputs

Additional data points for a fume cupboard controller

• Operating mode default setting for the fume cupboard controller equipped with the expansion module
• Selection of priority for operating mode default setting
• Face velocity actual value and setpoint value (only for fume cupboard controllers with face velocity transducer, equipment function FH-VS)

Data points for an EASYLAB room

• Operating mode default setting for the room: Just one data point is required to set the default operating mode for all controllers in a room
• Selection of priority for operating mode default setting (central BMS or room)
• Room operating mode
• Volume flow rate setpoint change (by the central BMS, for example) for an external temperature or differential pressure control
• Setpoint value switching for differential pressure control: Switching between two differential pressure setpoint values
• Total supply air and total extract air actual values (room)
• Evaluated damper blade positions for all controllers in a room
• Room differential pressure actual and setpoint values
• Room pressure alarm
• Number of controllers within the EASYLAB system
• Integration of volume flows
• Status of the digital inputs and outputs
• Configurable consolidated alarm (operating statuses, hardware faults)
• Control input signal for sun protection/blinds (to be provided by others)