Belimo Smay Control Device
URBS
Technical Approval ITB
AT-15-8564/2011
SMAY LLC / 29 Ciepłownicza St. / 31-587 Cracow / Poland
tel. +48 12 378 18 00 / fax. +48 12 378 18 88 / e-mail: info@smay.eu
URBS - Belimo Smay Control Device
Legal grounds
Pursuant to decision of European Commission No. 96/577/WE dated 24 June 1996 concerning methods
of declaring conformity of construction products (in accordance with Council Of Europe directive 89/106/EEC)
and Mandate M/109 of European Commission concerning Fire Alarm/Detection, Fixed Firefighting, Fire and
Smoke Control and Explosion Suppression Products Minister of Infrastructure has issued a Regulation dated
11 August 2004 concerning methods of declaring conformity of construction products and marking them with
building industry brand according to which control panels applied in fire protection systems shall hold Technical
Approval.
Application
Control Panel in URBS configuration is a static pressure regulation system within selected space by means
of volumetric airflow rate control that pertains an integral component of smoke and heat control system
®
SAFETY WAY® (iSWAY ). URBS control device pertains integral component of pressure differential systems
manufactured by SMAY company.
Structure and available models
Removed front
panel view
Key:
1 - Housing IP66
2 - VRP-M Belimo controller
3 - Pressure sensor VFP-100 Belimo
4 - Mounting plate
5 - Cable gland
Fig. 1. Schematic diagram of URBS/1
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URBS - Belimo Smay Control Device
Structure and available models - continuation
Removed front
panel view
Legenda:
1 - Housing IP66
2 - VRP-M Belimo controller
3 - Pressure sensor VFP-300 , (VFP-600), (VFP-2000) Belimo
4 - Mounting plate
5 - Cable gland
Fig. 2. Schematic diagram of URBS/2 (3) (4)
Drawing 2. Schematic diagram of URBS/2 (3) (4)
6
1
5
2
4
Key:
1 – URBS 1
2 – URBS 2
3 – Fan
4 – Frequency inverter
5 – Air damper with fast acting Belimo actuator
6 – Merawex power supply unit
3
Fig. 3. Belimo Smay Control Device (URBS) application
version 5.1.4
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URBS - Belimo Smay Control Device
Technical description and idea of operation - continuation
URBS intended to control frequency inverters operation
Basing on actual value of static pressure difference measurement between the air supply duct and the
reference pressure transducer VFP generates measurement signal transmitted to the VRP-M controller.
This analog signal can be picked off at VRP-M controller connection U5 as a 0 – 10 V or 2 – 10 V signal. Actual
value of analog signal is being subsequently transferred to the built-in controller of frequency inverter
(feedback). Basing on measured static pressure difference proportional to the analog signal value PID
controller algorithm of frequency inverter controls frequency of fan power supply and it's rotational speed
as a consequence. Air supply fan capacity depends on actual value of static pressure inside the air supply
duct. When static pressure inside the air supply duct increases frequency inverter reduces frequency
of power supply of the fan to maintain value set at VRP-M controller. Consequently static pressure drop
inside the air supply duct results in increasing fan capacity to the value required to maintain set value
of differential static pressure value.
URBS intended to control multiblade air damper actuator
Basing on actual value of static pressure difference measurement between the pressurized space and the
reference pressure transducer VFP generates measurement signal transmitted to the VRP-M controller.
Belimo Smay Control Device (URBS) in such solution is connected with an actuator NMQ24A-SRV-ST.
Actuator is powered and controlled by VRP-M controller. When static pressure inside the pressurized space
increases VRP-M controller generates signal resulting in closing the damper and reducing air supply rate
to the value required to maintain value set at VRP-M controller. Consequently static pressure drop inside the
pressurized space results in opening the damper and increasing air supply rate.
Single Belimo Smay Control Device (URBS) can control two fast-running actuators NMQ24A-SRV-ST, first
actuator is powered by URBS while second one requires external 24V power supply. Both actuators are
electrically coupled (backward operation, reverse direction of rotation). Such solution is applied to large air
dampers, air dampers assembled in batteries or pressure differential systems of fire-fighting lobbies with
electronically controlled air transfer.
Connections and wiring
URBS intended to control frequency inverter
Removed front
panel view
Fig. 4. Connections of URBS intended to control frequency inverter
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version 5.1.4
URBS - Belimo Smay Control Device
Connections and wiring – continuation
To ensure proper operation of Belimo Smay Control Device (URBS) it is necessary to connect pneumatic PVC
tubings to enable static pressure difference measurement. All tubings shall be conducted inside
electroinstallation tubes to prevent tubings from damage and reduce solar radiation influence. 24V AC/DC
power supply (line 2) shall be conducted with fire resistant cable if it crosses different fire zones. Within single
fire zone standard electrical screened cables can be applied. Frequency inverter control signal can
be conducted analogically as power supply (line 3).
VFP pressure transducer shall be connected with VRP-M controller inside the URBS with a use of cables
supplied by Belimo. If URBS is monitored with MSPU additional wire of MP-Bus is required (line 4).
URBS intended to control air damper actuator
Removed front
panel view
Fig. 5. Connections of URBS intended to control air damper actuator
To ensure proper operation of Belimo Smay Control Device (URBS) it is necessary to connect pneumatic PVC
tubings to enable static pressure difference measurement. All tubings shall be conducted inside
electroinstallation tubes to prevent tubings from damage and reduce solar radiation influence. 24V AC/DC
power supply (line 2) shall be conducted with fire resistant cable if it crosses different fire zones. Within single
fire zone standard electrical screened cables can be applied. Frequency inverter control signal can
be conducted analogically as power supply (line 3).
VFP pressure transducer shall be connected with VRP-M controller inside the URBS with a use of cables
supplied by Belimo. If it is not possible to locate URBS in the vicinity of air damper actuator cables shall
be lengthen in accordance with Belimo regulatory guides. If URBS is monitored with MSPU additional wire
of MP-Bus is required (line 4).
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URBS - Belimo Smay Control Device
Detailed schematic diagrams of electrical connections
MP BUS
MSPU
24V emergency
power supply
Actuator
Pressure controller
NMQ24A-SRV-ST
Belimo wires
Belimo wires labels
A - HTKSH FE180/E90 ekw 1x2x0,8 (YTKSY ekw 1x2x0,8)
B - HDGs FE180/E90 2x1,5 (YDY 2x1,5)
VRP-M
controller
Belimo wires
VFP pressure sensor
NOTE:
– Maximal length of B wires shall not exceed 50 m (165 ft.)
– Maximal length of power supply conducted through hot zone
(over 30oC) shall not exceed 30% of a total cable length
for E90 class cables
– Maximal voltage drop shall not exceed 10%
Fig. 6. Schematic diagrams of electrical connections of URBS intended to control air damper actuator
MP BUS
MSPU
feedback signal
24V emergency to the frequency
power supply
inverter
Belimo wires labels
A - HTKSH FE180/E90 ekw 1x2x0,8 (YTKSY ekw 1x2x0,8)
B - HDGs FE180/E90 2x1,5 (YDY 2x1,5)
E - HTKSH FE180/E90 ekw 1x2x0,8 (YTKSY ekw 1x2x0,8)
VRP-M
controller
Belimo wires
VFP pressure sensor
Fig. 7.
154
NOTE:
– Maximal length of B wires shall not exceed 50 m (165 ft.)
– Maximal length of power supply conducted through hot zone
(over 30oC) shall not exceed 30% of a total cable length
for E90 class cables
– Maximal voltage drop shall not exceed 10%
Schematic diagrams of electrical connections of URBS intended to control frequency inverter
version 5.1.4
URBS - Belimo Smay Control Device
Detailed schematic diagrams of electrical connections
Actuator
Pressure controller
NMQ24A-SRV-ST
Belimo wires
MP BUS
MSPU
Actuator
Pressure controller
NMQ24A-SRV-ST
Belimo wires
24V emergency
power supply
Belimo wires
Belimo wires labels
A - HTKSH FE180/E90 ekw 1x2x0,8 (YTKSY ekw 1x2x0,8)
B - HDGs FE180/E90 2x1,5 (YDY 2x1,5)
E - HTKSH FE180/E90 ekw 1x2x0,8 (YTKSY ekw 1x2x0,8)
VRP-M
controller
Belimo wires
VFP pressure sensor
NOTE:
– Maximal length of C, D wires shall not exceed 25 m (83 ft.)
– Maximal length of B wires shall not exceed 50 m (165 ft.)
– Maximal length of power supply conducted through hot zone
(over 30oC) shall not exceed 30% of a total cable length
for E90 class cables
– Maximal voltage drop shall not exceed 10%
Fig. 8. Schematic diagrams of electrical connections of URBS intended to control two air dampers actuators
version 5.1.4
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URBS - Belimo Smay Control Device
URBS operation parameters monitoring system
MP Bus connection MSPU
MP Bus connection MSPU
RS 485 Bus connection
Moxa A53
converter
Fig. 9. Schematic diagram of monitoring system
SMY controller can monitor operation parameters of up to 8 Belimo Smay Control Devices (URBS) via MP-Bus
connection (MP1-MP8). If it is necessary to increase total number of URBS additional SMY controllers
connected via RS 485 Bus are applied. Converter transmits RS 485 Bus signal directly to the PC with appropriate
software installed. With a use of PC it is possible to display and monitor selected operation parameters such as:
actual value of pressure difference measured by VFP pressure sensors or position of the control damper.
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version 5.1.4
URBS - Belimo Smay Control Device
Tests performed in Building Research Institute ITB in Warsaw
Tests were carried out in Fire Detection, Alarm, Fire Automatics and Electrical Installations Laboratory
of Building Research Institute in Warsaw (Report No. NP.-03723/P/2009/JC) covered tests of resistance
to electromagnetic compatibility interferences, ESD static electricity discharges, influence of electromagnetic
field, strength and resistance to environmental, climatic and mechanical influence such as vibrations, surges
and single strokes.
Performed lab tests have confirmed that Belimo Smay Control Devices (URBS) fulfill all the requirements set
for electronic pressure control devices applied in fire protections systems.
Power supply unit
ZSP135-DR
VFP
pressure sensor
VRP-M
controller
Actuator
NMQ24A-SRV-ST
x - exposed equipment
SMY controller
Moxa A53
converter
PC
Fig. 10. Schematic diagram of URBS test rig at ITB Laboratory
Basing on Whe %elimo 6may &ontrol 'evice 8RBS Oaboratory Wests Uesults 7echnical $pproval
,TB$T85642011 Ior Dn Hlectronic Sressure Gifferential control system has been issued, becoming first
document of this kind regarding electronically controlled Pressure Differential Systems (PDS).
Belimo Smay Control Device URBS identification
Each URBS is labeled with a sticker confirming device model.
Data plate with basic parameters of the device is located on the inner side of the housing front panel.
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URBS - Belimo Smay Control Device
Accessories and order instructions
Orders shall be placed in accordance with following example:
URBS - <W>-<P>
Key:
<W>
–
device model: 1, 2, 3 or 4
<P>
–
minimal value of pressure difference setpoint that shall be maintained between
pressurized space or air supply duct and the reference
Order example:
URBS - 1 - 50
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