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UK24BAC

 

Belimo Gateway MP to BACnet MS/TP 

 

4 / 20 

T9-

UK24BAC • en • v1.9 • 06.2018 • Subject to changes 

www.belimo.com 

 

 

Safety notes 

 

 

 

The device is not allowed to be used outside the specified field of application. 

 

It may be installed only by suitably trained personnel. 

 

The device does not contain any parts that can be replaced or repaired by the user 
and may only be opened at the manufacturer's site.

 

 
 

Product features 

 

Mode of operation 

The UK24BAC allows the actuators to be controlled digitally via the MP-Bus and send back their 
current operating status. The control system information and the response is administered in 
BACnet objects in the UK24BAC and can be processed with BACnet services. This permits the 
actuator functions to be integrated directly into BACnet. 

Sensor linking 

One sensor can be connected per MP/MFT(2) actuator. This can be a passive resistance 
sensor (PT1000, NI1000 or NTC), an active sensor (output DC 0…10 V), or a switching contact. 
This provides a straightforward way of digitising the analogue signal of the sensors with the 
Belimo actuator and transferring it via UK24BAC to the BACnet. 

MPL actuators don't provide a sensor input. 

 
 

Installation and commissioning 

 

Installation and wiring 

The device is mounted on 35 mm top hat rails. The wiring is accomplished with plug-screw 
terminals. 

Commissioning and parameterisation 

Commissioning requires no configuration tools. 

The BACnet MS/TP parameterisation of the device is accomplished with DIP switches:  
MAC Address (TS), baud rate, bus terminator, biasing  

The BACnet Device Address (Device Object Identifier, Device Object Name) is calculated 
based on the MAC Address setting (TS) and an adjustable offset value (see chapter 'PICS' for 
details). The resulting Device Address with factory-set offset and TS=1 is: 
Device Object Identifier:  

1001 (Instance) 

Device Object Name: 

"UK24BAC_1001" 

The parameterization of the sensors which are connected to the actuators and other settings 
can be done with any BACnet Client. 

The addressing of the MP actuators is accomplished either with the keys under the front cover 
or with the Belimo PC-Tool MFT-P.  

The MP-Bus assignment is determined automatically and continuously updated. No backup of 
the network structure takes place. 

 

Summary of Contents for UK24BAC

Page 1: ...Complete overview 2 Technical data 3 Safety notes 4 Product features 4 Installation and commissioning 4 Electrical installation 5 Dimensions 7 Operation 8 Protocol Implementation Conformance Statemen...

Page 2: ...Subject to changes www belimo com Complete overview Gateway MP BACnet MS TP Suitable MP MPL MFT 2 Actuators Damper actuators Fire damper actuators VAV actuators Actuators for characterised control va...

Page 3: ...Supported actuators MP MPL MFT 2 BF TopLine Quantity of actuators max 8 pcs Communication with actuators Belimo MP Bus Master Slave 1200 Bd Maximum signal conductor lengths MP Dependent on the number...

Page 4: ...logue signal of the sensors with the Belimo actuator and transferring it via UK24BAC to the BACnet MPL actuators don t provide a sensor input Installation and commissioning Installation and wiring The...

Page 5: ...aration shall be provided for segments crossing buildings Connection of the MP Bus The network consists of a 3 pin connection MP communication and 24 V supply Possibility of connecting a maximum of 8...

Page 6: ...ite Maximum signal conductor length Wire mm L max cable length m 0 75 800 1 00 1 50 2 50 The signal conductor lengths can be significantly increased if the actuators are supplied with AC 24 V locally...

Page 7: ...the mass of curves For cables with wire mm Cable length m 0 75 55 1 00 75 1 50 110 2 50 190 The power consumption W of the MP MPL MFT 2 actuators used is to be added and the corresponding signal condu...

Page 8: ...tting the BACnet MAC address The BACnet MAC address is set in binary form with the 7 DIP switches under the front cover The valid address range is 1 127 Values outside of this range will be interprete...

Page 9: ...2 and 3 in order to reduce interference effects during communications pauses The biasing is implemented as a rule at one of the bus ends Switches 2 and 3 must always be respectively activated or deac...

Page 10: ...Gateway supports the assigning of addresses to the MP nodes by means of the keys UP OK and DOWN located behind the front cover Procedure 1 Press down the OK key and keep it down approx 2 s until LED1...

Page 11: ...orted Data Sharing ReadProperty B DS RP B Data Sharing ReadPropertyMultiple B DS RPM B Data Sharing WriteProperty B DS WP B Data Sharing WritePropertyMultiple B DS WPM B Data Sharing COV Unsolicited B...

Page 12: ...AV n 100 2 Nominal volumetric flow AV n 100 3 Object processing 1 Present_Value writeable for OVERRIDE_ n and COV_MODE 2 Present_Value writable for MIN_STPT_ n und MAX_STPT_ n 3 Only if object comman...

Page 13: ...scard the affected actuator after 10 seconds and reset the actuator type to 0 Monitoring of the actuator is thus accomplished preferably with this object Each MP node has an unambiguous series number...

Page 14: ...for EPIV units 0 65535 SNS_TYPE_ n Multi state Value n 100 3 Sensor type connected to the actuator in the absence of sensor specification the wiring at the Y input of the MP actuator will have the ef...

Page 15: ...tion of the device 20 100 NOM_FLOW_ n Analog Value n 100 3 Nominal volumetric flow or pressure The unit depends on the node type m3 h for VAV controllers Pa for VAV controller in STP mode l min for EP...

Page 16: ...ddressing function reworked Known issues Firmware V1 07 New functions modifications WritePropertyMultiple service supported Feedback values are rounded Unconfirmed COV Notification for Multi state Val...

Page 17: ...UK24BAC Belimo Gateway MP to BACnet MS TP www belimo com T9 UK24BAC en v1 9 06 2018 Subject to changes 17 20...

Page 18: ...UK24BAC Belimo Gateway MP to BACnet MS TP 18 20 T9 UK24BAC en v1 9 06 2018 Subject to changes www belimo com...

Page 19: ...UK24BAC Belimo Gateway MP to BACnet MS TP www belimo com T9 UK24BAC en v1 9 06 2018 Subject to changes 19 20...

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