Annicom - Axio - DatasheetDetails

+44(0)1420487788

home

about us

products

datasheets

account

datasheetdetails

<< | < | AX-TBB700 - BACnet Fan Coil Controller

OVERVIEW

SPECIFICATION

DATASHEETS

The TBB700 series are BACnet Master-Slave/Token-Passing (MS/TP), full configurable, open protocol networked digital thermostats. They are suitable for 2-pipe or 4-pipe fan-coil HVAC systems of modulating and/or floating controls. The thermostat measures temperature of a room or distant space and then the output 0(2) - 10Vdc signal by proportional-integral algorithm to control cooling/heating devices and use relays to switch fan speed and extra on/off devices in the HVAC system to maintain the room space near a desired temperature set point. The 1- or 3- fan speed can be operated in the mode of auto changeover or manual selected continuous mode. This series has a big LCD screen showing the room temperature or set point, and related status. It also has optional digital inputs for detection device such as room occupied/unoccupied detector to enhance energy savings.

Product Features

• BACnet MS/TP, RS-485 open protocol communication with complete baud rate selections
• Effective run time accumulation for system reading/ resetting
• The fan speed can be operated in the mode of auto changeover or manual selected continuous mode.
• Room temperature or setpoint temperature selectable for normal display
• Fully configurable parameters such as switching differential, cycle time ect
• Proportional plus integral (PI) algorithm applied to modulating control and/or floating control
• 0(2) to 10Vdc or 10 to 0(2) Vdc control signal output selectable for direct/ reverse acting output
• Optional multi-stage on/off control outputs
• Minimum cycle/on/off time selectable
• Optional remote sensor (RS) input interface for connecting to remote temperature sensor

• Optional energy saving input (ESI) interface for connecting to hotel key card, occupied/unoccupied sensor or lighting interlock signal
• Optional extra digital input for window/door open detection to save energy
• Adjustable unoccupied setpoints for heating and cooling mode control
• Optional settable countdown timer (0-24 hours) function to stop control output when time expires
• Optional sleep mode function for raising 2 temperature setpoint in 2 hours
• Non-volatile memory (EEPROM) retains user settings during power loss
• User's button and energy saving lockable
• °C or °F display, no fluctuation sensing algorithm
• Control off output when system at OFF status
• Maximum and minimum setpoint limits settable

Supply voltage	24Vac (+/-10%), 50/60Hz
BACnet communication	BACnet application specific controler (B-ASC). Support B-ASC plus DS-RPM-B BIBBs. RS485, 2/3 wires connection. BACnet MS/TP open protocol, support 9.6/19.2/38.4/57.6/76.8 kbps baud rate selections. N81 data format (BACnet standard)
Display range	-30 to 120°C (-22 to 247°F) with suitable sensor
Display temperature unit and resolution	0.1°C/°F
Indication accuracy	+/- 1°C (1.8°F) at 25°C and output off
Setpoint range	0/50°C / 32-122°F (default 10-30°C/50-86°F adjustable), 0.5°C/°F per setting step
Setpoint adjust	By up and down arrows buttons or BACnet communication
Analogue output signal	0(2) to 10 Vdc or 10 to 0(2) Vdc maximum 3mA
Relay output for On/Off stage control	Up to 2 SPST or 2 SPDT relays for on/off device control
Relay output for fan control	Up to 3 SPST relays fro 1- or 3- fan speed control
Electrical raiting SPDT relay	1.2A/ 250Vac, inductive load
Electrical raiting SPST relay	2A/ 250Vac, inductive load
Remote sensor (RS) input interface	For connecting to external NTC thermistor 3K Ω
Energy saving inputs (ESI) interface	For saving energy by entering into unoccupied mode ESI is triggered by normally open or normally close dry contact
Extra digtial input (DI) interfact	For saving energy by stop cooling/heating and fan control output when DI is triggered by normally open or normally close dry contact
Control action for modulation outputs	Selectable direct or reverse contorl action of coolign and heating. Both are direct action by default
Control performace	Porportional plus intergral (PI) adaptive control
Coutndown timer function (optional)	1-24 hours settable countdown time to turn off control outputs when enabled
Sleep mode function (optional)	For raising 2°C temperature setpoint in 2 hours when enabled
Operating environment	0-50°C, 5-95% room humidity (non-condensing)
Wiring	Up to 19 screw-in terminals, each terminal capable of accepting 14 to 22 AWG wires or 1.5mm² wires
Dimensions	94x118x34mm (WxHxD)
Mounting	Mounts directly onto wall, pannel, standard 65x65mm junction box (hole pitch 60mm) or standard 2x4 inch vertical junction box ( hole pitch 83.5mm)

AX-TBB700.pdf / BACnet Fan Coil Controller