VMB1TSW Temperature sensor module for the Velbus system
CONTENTS DESCRIPTION ................................................................................................................................ 3 CHARACTERISTICS ...................................................................................................................... 3 VELBUS CHARACTERISTICS ...................................................................................................... 5 OVERVIEW SENSOR MODULE ........................................................................
DESCRIPTION The sensor module can be used to measure and send temperatures over the Velbus-system. In combination with a relay module (VMB4RYNO / VMB4RYLD or VMB1RY) a thermostat can be set-up to control a heating or cooling installation. Setting the comfort, day, night or anti-freeze mode can be done via the local pushbutton of with pushbuttons that are connected to the Velbus.
Storage capacity of 10 different pushbuttons per control function LED indications for: thermostat function for cooling comfort mode day mode night mode heater/air-conditioning status power supply voltage receiving/transmitting data over the Velbus Settings for: the desired temperature the desired comfort temperature for heating the desired day temperature for heating the desired night temperature for heating the anti-freeze safeguard temperature the heating limit (upper limit
VELBUS CHARACTERISTICS 2-wire communication for Velbus data and 2 wires for power supply data transmission: 16.
memory: read (over)write set the status of the output LED switching off the indication LED on the pushbutton module(s) switch unjam function of circulation pump and/or heating valve on or off output LED handling: switch off switch on flash flash slowly flash (very) fast request: module type content of the communication error counter the sensor temperature (min/max) and setting the time interval for transmitting data the time statistics the sensor status the sensor setti
OVERVIEW SENSOR MODULE 9 8 LED indication 1 2 3 4 5 Cooling mode Comfort mode Day mode Night mode Heating or air-conditioning on 6 Sensor Temperature sensor 7 Controls Mode pushbutton Settings 8 Terminator Wiring 9 10 Power supply 12 to 18Vdc Velbus 10
EMBEDDING THE TEMPERATURE SENSOR The temperature sensor VMB1TSW can be embedded in combination with blank frames VMBFBI and cover plate. It is possible to use a 2- or 3-module wide frame with cover plate from the BTicino Living series. The module must be pushed into the build-in frame from the front. It is also possible to use a 3-module wide frame with cover plate from the BTicino Light or Light Tech series. The module must be pushed into the build-in frame from the front.
EMBEDDING A TEMPERATURE SENSOR TOGETHER WITH A CONTROLLER The sensor (VMB1TSW) can be embedded together with a controller (VMB1TC / VMB1TCW) in a 4-module wide frame with cover plate from the BTicino Living series. The module must be pushed into the build-in frame from the front. The sensor (VMB1TS) can be build-in together with a controller (VMB1TC / VMB1TCW) in a 4-module wide frame with cover plate from the BTicino Light of Light Tech series.
OVERVIEW HEATING INSTALLATION A heating installation usually consists of radiators or convectors, a boiler, circulation pump and a collector with valves for every radiator group. Every room is equipped with a temperature sensor VMB1TSW which is controlled by one or multiple temperature controllers VMB1TC / VMB1TCW(W). The sensors in turn steer the relay modules VMB4RYNO / VMB4RYLD (or VMB1RY) that control the valves.
WIRING To interconnect the Velbus modules the use of twisted-pair cable (EIB 2x2x0.8mm2, UTP 8x0.51mm - CAT5 or equivalent) is recommended. When a lot of modules (more than 10) are connected to the cable or longer cable lengths (more than 50m) are used, it is important to use a cable with appropriate diameter (0.5mm² or higher). Connect the bus to the module (beware of the polarity). Connect the 12V to 18V direct current to the module (beware of the polarity).
Relay cabinet wiring
Terminator Normally only 2 ‘TERM’ terminators must be used in a complete Velbus installation. Usually this will be on the end of 2 bus wires (for example in the attic and in the basement. On all other modules, the terminator must be removed. Remark: In case the wiring contains a lot of branches, still a terminator will be set on the end of 2 bus wires (= 2 terminators). When communication errors occur, an additional terminator can be set as close as possible to one of the two existing terminators.
Cooling or heating mode When the temperature sensor is configured to control an air-conditioning system, the frost flower LED (upper LED) will be lit. Setting the heating or cooling mode can only be done through a temperature controller (VMB1TC / VMB1TCW) or through the Velbus link program. Heating mode Cooling mode Air-conditioner or heater active When the heater (valve open) or air-conditioner is active, a red LED will be lit.
OPERATION Pushing the push button repeatedly will switch the module between anti-freeze, night, day or comfort mode successively. When the comfort, day or night mode LED is flashing, the sensor module is set temporarily (sleep timer) to the indicated mode. During this time the program is ignored When the sleep timer expires, the sensor module will resume the program or in case no program is present will return to its previous setting. Remarks: Anti-freeze mode can not be set temporarily.
SETTINGS Following parameters can be set via the temperature controller (see manual VMB1TC / VMB1TCW(W)) or via the Velbus link software: the zone to which the sensor belongs the operating mode (heating or cooling) switching the unjam function of the circulation pump and/or heating valve on or off the desired comfort temperature for heating the desired day temperature for heating the desired night temperature for heating the anti-freeze safeguard temperature the heating limit (upper limit of
Minimum and maximum temperature The sensor records the minimum and maximum temperature. These values can be examined or reset via the temperature controller (VMB1TC / VMB1TCW) or through the Velbus link software via a PC connected to the Velbus PC interface (VMB1USB, VMB1RS of VMBRSUSB). Differential thermostat Using two sensors a differential thermostat can be created. When the difference in temperature between both sensors reaches a certain value, the relay channel can be activated.
CONFIGURING THE OUTPUTS The sensor module transmit messages over the Velbus when the status of one of its multiple outputs changes.
REMOTE CONTROL The sensor module can be operated locally, but also remotely via a temperature controller VMB1TC / VMB1TCW(W) (refer to the manual of the controller). The sensor module can also be operated remotely by connecting pushbuttons to the Velbus.
SWITCHING TO ANTI FREEZE MODE THROUGH WINDOW CONTACTS The heating can be switched automatically in anti freeze mode as soon as a window featuring window contacts is opened. The LEDs will switch off on the VMB1TS temperature sensor. The VMB1TC / VMB1TCW(W) temperature controller displays an anti freeze and key symbol together with a blinking mode LED. Locatie ↑ Badkamer 0m Mode ← Menu → 18 ↓ The heating cannot be set into another mode as long as a window remains open.
DIFFERENTIAL THERMOSTAT Using two sensors, a differential thermostat can be created. When the temperature difference between both sensors crosses a preset value, a relay channel can be activated. To achieve this, the first sensors must know the address of the second one. The second sensor must than be linked to a relay channel. The temperature difference value is set on the first sensor. The settings can be done via a temperature controller VMB1TC / VMB1TCW(W) or via the Velbus link program.
The passage automatically 3° cooler than the office When the sensor module in the office is set to day-mode, the temperature in the passage must be 3° lower than the office. Is the day temperature of the office is set to 20°C the desired passage temperature will be 17°C. When the sensor module in the office is set to night-mode, the temperature in the passage must be 3° lower than the office. Is the night temperature of the office is set to 15°C the desired passage temperature will be 12°C.
Passive cooling of a bedroom During summer time the bedroom is cooled via a fan that extracts air from a cooler room. Mount a temperature sensor in both rooms. The temperature sensor of the bedroom is set to cooling mode and the Cooler room Bedroom cooling output is linked to a relay channel that controls the fan. When the temperature in the cooler room is about 3 degrees lower than the bedroom temperature the fan is activated.
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