Plug sockets on the outside
For hospitals
Features
– Controllers can be used individually or combined with other controllers for a complete room solution
– System solution for the volume flow control in rooms (room balance)
– Central BMS interface, 0 – 10 V voltage signals, digital inputs and outputs, expansion modules for LonWorks, BACnet, Modbus
Parts and characteristics
– Ready-to-commission controller, as an attachment for air terminal units
– Static differential pressure transducer for rapid actual value measurement
– Microprocessor system with programme and system data stored in nonvolatile memory
– Double-stack terminal block for supply voltage connection
– Connections for two control panels
– Connection of communication cable to plug socket or screw terminals
– Digital inputs with screw terminals or plug socket
– Analogue inputs with screw terminals or plug socket
– Analogue outputs with screw terminals or plug socket (actuator)
– Control input signal for various actuators: standard actuator with 150 s running time, actuator with 150 s running time and safe position (spring return), fast-running 3 s actuator; all actuators for 90° damper blade position
– Integral terminal resistor for the communication cable
– Alarm indicator lights on both sides of the casing
– Status indicator lights (heartbeat, communication and terminal resistor)
Attachments
Expansion modules are factory mounted or can be fitted at a later stage
– T: EM-TRF, power supply unit for connecting the controller to the 230 V AC mains voltage
– U: EM-TRF-USV, power supply unit for connecting the controller to the 230 V AC mains voltage, including uninterruptible power supply (with battery backup, 4 h), volume flow rate measurement for room and duct pressure controllers
– Z: EM-AUTOZERO, automatic zero point correction for long-term stable volume flow rate measurement and hence reduced maintenance.
– L: EM-LON, LonWorks FTT-10A interface
– B: EM-BAC-MOD-01, interface for BACnet MS/TP
– M: EM-BAC-MOD-01, interface for Modbus RTU
– I: EM-IP, BACnet-IP, Modbus-IP, web server interface
– R: EM-IP, BACnet-IP, Modbus-IP, web server interface with real time clock
Useful additions
– BE-LCD: Room control panel
– Static differential pressure transducer for room pressure control
– Static differential pressure transducer for duct pressure control, including tube and pressure tap
– EasyConnect: Configuration software for the commissioning and diagnosis of TROX UNIVERSAL and EASYLAB systems; BlueCon Bluetooth adapter module available as an option
– EasyCon Android app for maintenance and diagnosis as well as for reading and writing certain parameters (only with TROX BlueCon adapter module)
Construction features
– Control unit complete with all expansion modules in a plastic casing and attached to the air terminal unit
– Controller casing can be opened without tools, except for controllers with with EM-TRF or EMTRF- USV
– Expansion modules can be easily retrofitted (automatic recognition, plug and play)
– Pin header socket for the connection of expansion modules
– Plug sockets for the most important connections on the outside of the casing
– Static differential pressure transducer with room air induction to protect the sensor
Materials and surfaces
– Casing made of ABS plastic, UL94, V0, lower part in grey (RAL 7037), with blue cover (RAL 5002)
Maintenance
– Zero point correction of the static differential pressure transducer should be carried out once per year (recommendation)
– If you use expansion module EM-AUTOZERO for automatic zero point correction, no manual correction is required
Supply voltage | 24 V AC ± 15 %; 230 V AC as option; 50/60 Hz |
Power rating | 15 VA with standard actuator, 20 VA with spring return actuator, 29 VA with fastrunning actuator, plus 4 VA for each BELCD control panel |
Micro fuse | 2 A, slow blow, 250 V |
Operating temperature | 10 – 50 °C |
IEC protection class | III (protective extralow voltage), with EMTRF or EMTRFUSV II (protective insulation) |
Protection level | IP 20 |
EC conformity | EMC to 2014/30/EU |
Weight | 1.4 kg |
Recovery time | 500 ms |
2 interfaces for communication cable | Network cable SFUTP, 300 m max.; up to 24 devices |
2 interfaces for control panels | Network cable SFUTP, 40 m max. |
6 digital inputs | For voltfree switch contacts, configured as NO contacts |
6 digital outputs | Relay with NO/NC contact, 250 V, 8 A; switchon current 12 A |
5 analogue inputs | 0 – 10 V, input resistance > 100 kΩ, characteristic can be configured |
4 analog outputs | 0 – 10 V, 10 mA max., characteristic can be configured |
Choice of three actuator variants to ideally meet project-specific requirements.
A transformer module allows for the connection of 230 V AC in case no 24 V AC/DC supply voltage can be provided.
A transformer module with UPS function should be provided.
A special valve (optional) should be provided for the automatic zero point correction of the differential pressure transducer; the controller should automatically recognise the valve.
It should be possible to connect the controller with optional communication modules to open bus systems (LonWorks, BACnet MS/TP, Modbus RTU, BACnet/IP and Modbus/IP).
This will allow for the reading and writing of defined data points and parameters such as volume flow rate actual and setpoint values, extract and supply air flow rate total values, damper blade position, overrides and alarms.
Room pressure or duct pressure controllers
Circular VAV terminal units for variable and constant volume flow systems, suitable for supply or extract air, available in 7 nominal sizes.
High control accuracy (even with upstream bend R = 1D).
Ready-to-operate unit which consists of the mechanical parts and the electronic control components (attachments). Each unit contains an averaging effective pressure sensor for volume flow rate measurement, and a control damper blade. Factory assembled control components (attachments) complete with wiring and tubing. Effective pressure sensor with 3 mm measuring holes, hence resistant to dust and pollution. Spigot with groove for lip seal, suitable for connecting ducts according to EN 1506 or EN 13180. Position of the damper blade indicated externally at shaft extension.
Closed blade air leakage to EN 1751, class 4 (nominal size 100, class 2; nominal sizes 125 and 160, class 3).
Casing air leakage to EN 1751, class C.
Materials and surfaces
– Casing made of ABS plastic, V0, lower part in grey (RAL 7037), with blue cover (RAL 5002)
Technical data
– Nominal sizes: 100 to 400 mm
– Volume flow rate range: 12 to 1680 l/s or 44 to 6048 m³/h
– Volume flow rate control range: approx. 15 – 100 % of the nominal volume flow rate
– Differential pressure range: 5 – 1000 Pa
Control component (attachments)
Electronic controller for the demand-based control of supply air pressure or extract air pressure in rooms or ducts.
Factory mounted to a VAV terminal unit, wired, tested and set to customer-specific parameters.
Control electronics using a microprocessor, with firmware and configuration settings stored in EEPROM memory and hence safe in case of a power failure
Equipment function
– PRS: Room pressure control, supply air
– PRE: Room pressure control, extract air
– PDS: Duct pressure control, supply air
– PDE: Duct pressure control, extract air
Maintenance of the required differential pressure through a permanent setpoint/actual value comparison in a closed loop.
The pressure setpoint is either a parameter (constant pressure) or a controlled variable (variable pressure) that is received via an analogue input or a communication module (expansion). Room pressure control requires that positive pressure, negative pressure and 0 Pa differential pressure can be achieved. The controller should allow for override control to fully open or close the damper blade.
An external differential pressure transducer measures the room or duct pressure; the measured value is then transmitted to the controller by means of a 0 – 10 or a 2 – 10 V DC voltage signal. This allows for some flexibility with regard to the differential pressure transducer for a project.
An optional expansion module for volume flow rate measurement should allow for measuring the volume flow rate by means of the pressure controller.
The controller monitors the required differential pressure and emits an alarm in case of deviations. Alarm thresholds (parameters) can be individually set and changed as deviations from the setpoint value. With a volt-free door contact on a digital input it should be possible to suppress alarms (for a certain period of time) and to freeze the damper blade in its current position.
The controller should allow for override control to fully open or close the damper blade (digital inputs or communication modules).
Connections for all important communication and peripheral devices are located on the outside of the casing and hence easily accessible. Indicator lights for alarms (on both sides), controller function (heartbeat), and communication are also on the outside of the casing.
Conventional interfaces should be provided to connect the controller to higher-level systems: 4 analogue inputs for actual pressure and setpoint pressure, room volume flow rate, connection of external volume flow rates; 3 analogue outputs for actual pressure, damper blade position, actual volume flow rate (only with option V); 6 digital inputs (for volt-free contacts) and 6 digital outputs (relays) for alarms and control panels. 2 control panels can be connected to the controller for the emission of visual and acoustic alarms and for the display of room actual and setpoint pressure values, lighting, shading and operating modes; they also allow for control by users.
The controller is designed for integration with a control system; up to 24 TROX UNIVERSAL controllers can be connected to a communication cable (plug and play, no addressing required). It is possible to combine different equipment functions (volume flow rate, room pressure, duct pressure) within a system.
It should be possible to expand the range of functions with expansion modules for different project requirements.
A transformer module allows for the connection of 230 V AC in case no 24 V AC/DC supply voltage can be provided. A transformer module with UPS function should be provided.
It should be possible to expand optional volume flow rate measurement with a function for automatic zero point correction.
It should be possible to connect the controller with communication modules to open bus systems (LonWorks, BACnet MS/TP, Modbus RTU, BACnet/IP and Modbus/IP). This will allow for the reading and writing of defined data points and parameters. This includes: differential pressure actual and setpoint values, damper blade position, override functions and alarms.
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Contact
We are here for you
Please specify your message and type of request.
Tel.: +32(0)2 522 07 80 | E-mail: info@trox.be
Contact
Thank you for your message!
Your message is send and will be processed shortly.
Our department for Service-Requests will contact you asap.
For general question regarding products or services you can also call:
Tel.: +32(0)2 522 07 80 | E-mail: info@trox.be
