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INDUSTRIAL SOLUTIONS
2
INDEX
INDUSTRIAL SOLUTIONS..................................................................................4
KINDS OF INTALLATIONS.................................................................................6
FREEZING TUNNELS.........................................................................................7
TEWIS INDUSTRIAL INSTALLATIONS ADVANTAGES...................................8
INSTALATIONS MANAGEMENT.................................................................... 10
HARDWARE FEATURES................................................................................. 11
MACHINERY ROOM SOFTWARE.................................................................. 12
COLD ROOM CONTROL AND SPECIAL PROCESSES.................................. 14
MONITORING................................................................................................... 15
3
TEWIS SMART SYSTEMS S.L.U. is a leader in energy
consulting, specialising in integral solutions, the development
of refrigeration and air-conditioning systems and in DHW
installation.
With experience and expertise in engineering, refrigeration,
regulation and monitoring that spans every type of industrial
plant or process within the dairy, wine, fruit and vegetable,
petrochemical, meat, pharmaceutical, fishing and naval
sectors, our team can meet every project need.
I N D U S T R I A L
REFRIGERATION
S O L U T I O N S
We have our own laboratories where we
can experiment with new technologies,
allowing us to achieve greater installation
efficiency and offer personalised solutions
for each client.
Our laboratories also provide training
for engineers, refrigeration installers
and specialists, based on theoretical
and practical study of the latest applied
technologies.
Tewis proposals are different from those
traditionally found in the sector, in that
they allow for a substantial reduction
in costs in terms of investment and the
installation process.
At Tewis we work with all types of
refrigerants: NH3
, CO2
, HFCs and heat-
transfer fluids, carrying out all of our
installations with an optimal efficiency/
inversion / sustainability ratio.
4
SOLUTION A
INDUSTRIAL SOLUTIONS
FRESH (75%) • FREEZE (25%)
SOLUTION B
FRESH (50%) • FREEZE (≥ 50%)
ENERGY
EFFICIENCY
LATENT
RISK
EASY
PLUG & PLAY
HARDWARE
COST
KIND OF
PRODUCT
A+
CO2
NH3
ENERGY
EFFICIENCY
LATENT
RISK
EASY
PLUG & PLAY
HARDWARE
COST
KIND OF
PRODUCT
A+
CO2
NH3
TEWIS SOLUTIONS FOR INDUSTRIAL PLANTS
CO2
RACK
DIRECT EXP.
NH3
CHILLER
RACK
( )
CO2
RACK
PUMPED
NH3
CHILLER
RACK
( ) ( )
FLOODED
5
SOLUTION D [CONVENTIONAL]
ENERGY
EFFICIENCY
LATENT
RISK
EASY
PLUG & PLAY
HARDWARE
COST
KIND OF
PRODUCT
A+
CO2
NH3
INDUSTRIAL SOLUTIONS
FRESH • FREEZE
SOLUTION C
FRESH (75%) • FREEZE (≤ 25%)
ENERGY
EFFICIENCY
LATENT
RISK
EASY
PLUG & PLAY
HARDWARE
COST
KIND OF
PRODUCT
A+
NH3
INSTALLATION WITH CO2
CONDENSER UNITS
CO2
COND. UNIT
DIRECT EXP.
NH3
CHILLER
RACK
( )
NH3
PUMPED
RACK
NH3
LOW TEMP. PUMPED
RACK
( )( )
FLOODED FLOODED
6
NH3 chiller unit producing glycol at -8ºC for fresh
produce as well as condensation in subcritical CO2
refrigeration system for frozen foods. Both chiller and
CO2
system are fully finished, ready for connection
and operation.
NH3 chiller unit producing glycol at -8ºC for fresh
produce as well as condensation of subcritical CO2
condensation units used for frozen food.
These systems generally have very few areas for
preserving frozen food: two units installed per area,
each running on 70% power to ensure service.
Both chiller and CO2
units are fully finished systems,
ready for connection and operation.
NH3 compressor racks for both fresh and frozen food.
These units operate on particle separators, from which
NH3
is pumped to evaporators.
Require high degree of professional expertise.
Maximum efficiency due to avoidance of intermediate
exchanges.
Machinery and installation cost higher than with than
other systems, and greater risk due to high amount of
NH3
stored.
Not recommended for unpackaged products.
SOLUTION A SOLUTION C
SOLUTION D
NH3 chiller unit producing glycol at -8ºC for fresh
produce as well as condensation in subcritical CO2
refrigeration system operating on particle separator,
from which CO2
is pumped to frozen food units.
Requires high degree of professional expertise.
Greater efficiency for frozen food than with direct
expansion system, yet higher cost of machinery and
installation.
Increased risk, due to large amount of CO2
stored.
SOLUTION B
FRESH (50%) • FREEZE (≥ 50%) FRESH • FREEZE
FRESH (75%) • FREEZE (≤ 25%)FRESH (75%) • FREEZE (25%)
INDUSTRIAL SOLUTIONS
CO2
RACK
DIRECT EXP.
NH3
CHILLER
RACK
( ) CO2
COND. UNIT
DIRECT EXP.
NH3
CHILLER
RACK
( )
CO2
RACK
PUMPED
NH3
CHILLER
RACK
( ) ( )
FLOODED
NH3
PUMPED
RACK
NH3
LOW TEMP. PUMPED
RACK
( )( )
FLOODED FLOODED
INSTALLATIONS
7
INDUSTRIAL SOLUTIONS
Allows for freezing at lower temperatures,
with higher quality freezing process.
R23 refrigerant in cascade system.
HFCs or NH3
plant required for condensation.
Used in individual tunnel installations.
Medium level of complexity, but high
installation cost.
A very good solution for freezing tunnels.
Uses subcritical CO2
cascade system.
Allows for installation by either direct
expansion or flooded system, the latter being
more efficient, albeit with higher cost and
higher professional and safety requirements.
Condensation by HFCs or by glycol cooled by
HFCs or NH3
.
R23 -70°C CO2 -45°C
A traditional solution, less efficient and with
greater limitations than CO2
solution, which
can evaporate up to -45ºC.
NH3 tunnels can be of two types: NH3
gravity feed or pump circulation systems.
-40°CNH3
APPLICATIONS: FREEZING TUNNELS
8
QUALITY OF THE EXECUTIONS
Machine room
As these are factory-finished products, the
standard of quality certified during fabrication
is maintained and installed machinery is fully
guaranteed.
Electrical installation
On-board electrical switchboard guarantees
that units can be delivered, tested and fully
connected.
Installation
Tewis systems greatly simplify installation,
making it much easier to
control quality and time.
MODULARITY AND PHASES
Tewis systems are designed to allow for
modular adaptation, which is particularly useful
when renovating an existing facility or when
planning phased industry growth.
Modularity has a very important advantage
over the traditional solutions offered by large
compressors and machine rooms, which
complicate renovations and limit facility
expansions, due to initial over-investment or
space.
TEWIS INDUSTRIAL INSTALLATIONS ADVANTAGES
INDUSTRIAL SOLUTIONS
9
COSTS SAVINGS
Machine room
CI-Box bodywork Plug & Play unit installed
outside, making traditional machine room
unnecessary and producing cost savings
and larger surface area available for other
uses.
Electrical installation
Electrical switchboard mounted on
refrigeration plant, avoiding costly electrical
installations.
Installation
Controlled and reduced installation costs
in terms of time, materials, employees and
unforeseen contingencies.
CONTROL
Costs savings
Our technology partner Eliwell, specialists
in HVAC and refrigeration control, produces
controllers especially designed for industrial
facilities with highly competitive price and easy
market access.
Standardisation
In-house software development department
standardises different solutions and simplifies
unit programming, making our solutions less
expensive than others.
Monitoring and remote management
Eliwell has over 5,000 remote management
and monitoring systems installed throughout
Spain, providing high-quality services which are
easy to implement and operate.
CI-BOX: INDUSTRIAL MACHINE ROOM
INDUSTRIAL SOLUTIONS
Alarm box and
NH3
extraction
10
Tewis offers an integrated management
system for industrial solutions, capable
of combining the expected advantages
of the latest industrial software on
the market with its wide experience in
modular software and distributed control
systems.
INSTALLATION MANAGEMENT
EXAMPLE: GLYCOL COOLING INSTALLATION + PUMPED CO2
A
B
C
D
E
A
B
C
D
E
F
F
INDUSTRIAL SOLUTIONS
NH3
cooler control + Cooling tower
+ Exchanger - Primary hydraulic group
CO2
compressor rack
controller + glycol
condensation.
Cascade system.
SUCTION
DISCHARGE
OIL
GLYCOL TOWER
GLYCOL DEFROST
GLYCOL CO2
CONDENSATION
LIQUID
PIPES • COLOR CODE
Suction separator control
+ flooded system pumping
group
11
FREE EVOLUTION 	
THE HIGHEST IN
THE RANGE OF
PROGRAMMABLE
CONTROLS
• Available in 8 DIN RAIL format.
• Expandable with up to 5 optional modules.
• Built-in or remote graphical user terminal interface.
• Integration with remote tactile terminal via Ethernet
network.
• Integration in industrial systems (Modbus®, CANopen®
and Profibus®*).
• Integration in BMS systems (LonWorks®* and
BacNet®*).
• Integration in Ethernet networks (TCP/IP).
• Updatable using a standard USB key.
* Requires specific programming. Please ask our sales department.
RTX
EVAPORATOR
CONTROLLER
FOR INDUSTRIAL
REFRIGERATION
• Control of pulse-type EEVs for direct expansion
systems.
• Smart defrosting management, even with hot gas.
• Possibility of 2 control sensors (evaporator return and
discharge) and control by weighted average.
• LINK2 synchronisation between evaporators.
• Optimal energy management for ventilators, type of
defrosting, lights and heaters.
• EC fan control.
• Rapid installation and configuration.
• Compact dimensions (10 DIN).
TEWIS TOUCH 	
DISPLAY FOR INDUSTRIAL REFRIGERATION
MONITORING
• 24Vdc power supply.
• Integrated Ethernet port.
• 15” LCD TFT 4:3 XGA, 1024x768, 16M colors
backlight LED, 450 cd/m2
▪ Vision angle L: R/U:L (typ.):
80°:80°/70°:70°
• Dimensions: A=390mm, B=305mm, C=378mm,
D=294mm, H=6mm, F=48,5mm
• Weight= 3,3Kg.
HARDWARE FEATURES
TELEVIS GO
MONITORING SYSTEM FOR INDUSTRIAL
REFRIGERATION UNITS
High-range, market-leading controller for management,
data logging and full remote control of installation. Main
energy and functional advantages:
• Industrial PC.
• Windows 7 Embedded. No need to install operating
system.
• Televis Go already installed, simply configure instrument
network.
• Integrated web server.
• Over one year of registration with integrated Flash
memory.
• Digital data reading in asynchronous mode.
• No ventilation required.
INDUSTRIAL SOLUTIONS
12
COMPRESSORS REGULATION
•	 Capacity regulation with one converter per compressor.
The first can be controlled by frequency converter or by
differential version.
•	 Can manage different types of compressor: screw, semi-
hermetic, open and compact.
•	 Rotation based on hours of operation, with monitoring
provided in manual mode.
•	 Compressor management by neutral zone or proportional
band, depending on parameter.
•	 Regulation by suction pressure (compressor system) or
by charge or return temperature in event of sensor error
with automatic offset (chiller).
•	 Control of operating limits by pressure and temperature
of discharge.
•	 Blocking of charge and discharge alarm due to
temperature or pressure of discharge.
•	 Monitoring of suction pressure and temperature, as well
as oil injection into compressors.
•	
GENERAL FEATURES
•	 Controls multi-compressor units of semi-hermetic, open
and compact screw compressors.
•	 Controls evaporative condenser or cooling tower.
•	 Manages suction separator and pumping group in CO2
and
NH3
flooded systems.
•	 Controls chillers.
•	 Manages cooler hydraulic group with possible Modbus
pump management (please consult sales department).
•	 Two programmable controllers for cascade systems, with
inter-management via digital inputs and outputs.
•	 Control of glycol condensation for cascade or direct
expansion systems using Eliwell V910 regulator.
•	 Includes algorithms for oil or gas cooler.
MACHINERY ROOM SOFTWARE
INDUSTRIAL SOLUTIONS
13
EXCHANGER / CHILLER
•	 Minimum, medium and maximum level, and high level.
•	 Operational status ON and operational status OFF.
•	 Regulation by number of working compressors.
•	 Management of up to 3 pumps by RTU Modbus.
•	 Can be managed by differential pressure, discharge or
return pressure.
•	 Pump rotation based on hours of operation and in case of
breakdown.
•	 Maximum of 2 pumps in operation, with 1 reserve.
CONDENSATION MANAGEMENT
Condenser and evaporative tower
•	 1 water pump stage.
•	 2 ventilator stages.
•	 1 minimum water tank level entry.
•	 Fan management using frequency converter.
•	 Regulation by discharge pressure and by proportional
band.
•	 Floating condensation.
Glycol condensation
•	 Up to 2 control pumps with frequency converter,
managed by pressure or glycol temperature, and including
service request management.
SEPARATOR IN PUMPED SYSTEMS
•	 Management of 2 pumps with possible of frequency
converter. Rotation based on hours of operation; digital
input from differential pressure control switch with time
delay for confirmation of priming. Includes management
of retries and visualisation of attempt counter.
•	 Minimum and maximum level.
•	 Working level ON and working level OFF.
•	 Regulation based on chilling requirements.
INDUSTRIAL SOLUTIONS
14
SOLUTIONS FOR COLD STORAGE CONTROL, REFRIGERANT LEAK DETECTION, MAN-INSIDE ALARM AND
BODYWORK EXTRACTION
RTX600/V COLDFACE ID985
SOLUTIONS FOR EVAPORATORS CONTROL
SPECIAL APPLICATIONS
• HAM / CHEESE CURING ROOMS
• DEGREENING
• AIRING
• TUNNEL
• CONTINUOUS TUNNEL
• BREAD FREEZING
• MUST PASTEURIZATION
Programming of
thermal profiles
for processes
Installation diagram for
compressor monitoring
COLD ROOM CONTROL AND SPECIAL PROCESSES
INDUSTRIAL SOLUTIONS
IP 66Cámara T-
15
INSTALLATION
MONITORING
REGULATOR PER MACHINE + GENERAL TOUCH SCREEN
REGULATOR + TOUCH SCREEN PER MACHINE + GENERAL SCREEN
MACHINERY ROOM
MACHINERY ROOM
CONTROL ROOM
CONTROL ROOM
INSTALLATION
INDUSTRIAL SOLUTIONS
Certificates
2006/42 CE
2004/108 CE-93/68 CEE
2006/95 CEE-93/68 CEE
97/23 CEE
Parque Tecnológico
Auguste y Louis Lumière, 26
46980 Paterna (Valencia) ES
Tel.: (+34) 96 313 42 02
Fax: (+34) 96 350 07 87
www.tewis.com
info@tewis.com
MKT2-272ENV6
16

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Tewis Industrial Solutions

  • 2. 2 INDEX INDUSTRIAL SOLUTIONS..................................................................................4 KINDS OF INTALLATIONS.................................................................................6 FREEZING TUNNELS.........................................................................................7 TEWIS INDUSTRIAL INSTALLATIONS ADVANTAGES...................................8 INSTALATIONS MANAGEMENT.................................................................... 10 HARDWARE FEATURES................................................................................. 11 MACHINERY ROOM SOFTWARE.................................................................. 12 COLD ROOM CONTROL AND SPECIAL PROCESSES.................................. 14 MONITORING................................................................................................... 15
  • 3. 3 TEWIS SMART SYSTEMS S.L.U. is a leader in energy consulting, specialising in integral solutions, the development of refrigeration and air-conditioning systems and in DHW installation. With experience and expertise in engineering, refrigeration, regulation and monitoring that spans every type of industrial plant or process within the dairy, wine, fruit and vegetable, petrochemical, meat, pharmaceutical, fishing and naval sectors, our team can meet every project need. I N D U S T R I A L REFRIGERATION S O L U T I O N S We have our own laboratories where we can experiment with new technologies, allowing us to achieve greater installation efficiency and offer personalised solutions for each client. Our laboratories also provide training for engineers, refrigeration installers and specialists, based on theoretical and practical study of the latest applied technologies. Tewis proposals are different from those traditionally found in the sector, in that they allow for a substantial reduction in costs in terms of investment and the installation process. At Tewis we work with all types of refrigerants: NH3 , CO2 , HFCs and heat- transfer fluids, carrying out all of our installations with an optimal efficiency/ inversion / sustainability ratio.
  • 4. 4 SOLUTION A INDUSTRIAL SOLUTIONS FRESH (75%) • FREEZE (25%) SOLUTION B FRESH (50%) • FREEZE (≥ 50%) ENERGY EFFICIENCY LATENT RISK EASY PLUG & PLAY HARDWARE COST KIND OF PRODUCT A+ CO2 NH3 ENERGY EFFICIENCY LATENT RISK EASY PLUG & PLAY HARDWARE COST KIND OF PRODUCT A+ CO2 NH3 TEWIS SOLUTIONS FOR INDUSTRIAL PLANTS CO2 RACK DIRECT EXP. NH3 CHILLER RACK ( ) CO2 RACK PUMPED NH3 CHILLER RACK ( ) ( ) FLOODED
  • 5. 5 SOLUTION D [CONVENTIONAL] ENERGY EFFICIENCY LATENT RISK EASY PLUG & PLAY HARDWARE COST KIND OF PRODUCT A+ CO2 NH3 INDUSTRIAL SOLUTIONS FRESH • FREEZE SOLUTION C FRESH (75%) • FREEZE (≤ 25%) ENERGY EFFICIENCY LATENT RISK EASY PLUG & PLAY HARDWARE COST KIND OF PRODUCT A+ NH3 INSTALLATION WITH CO2 CONDENSER UNITS CO2 COND. UNIT DIRECT EXP. NH3 CHILLER RACK ( ) NH3 PUMPED RACK NH3 LOW TEMP. PUMPED RACK ( )( ) FLOODED FLOODED
  • 6. 6 NH3 chiller unit producing glycol at -8ºC for fresh produce as well as condensation in subcritical CO2 refrigeration system for frozen foods. Both chiller and CO2 system are fully finished, ready for connection and operation. NH3 chiller unit producing glycol at -8ºC for fresh produce as well as condensation of subcritical CO2 condensation units used for frozen food. These systems generally have very few areas for preserving frozen food: two units installed per area, each running on 70% power to ensure service. Both chiller and CO2 units are fully finished systems, ready for connection and operation. NH3 compressor racks for both fresh and frozen food. These units operate on particle separators, from which NH3 is pumped to evaporators. Require high degree of professional expertise. Maximum efficiency due to avoidance of intermediate exchanges. Machinery and installation cost higher than with than other systems, and greater risk due to high amount of NH3 stored. Not recommended for unpackaged products. SOLUTION A SOLUTION C SOLUTION D NH3 chiller unit producing glycol at -8ºC for fresh produce as well as condensation in subcritical CO2 refrigeration system operating on particle separator, from which CO2 is pumped to frozen food units. Requires high degree of professional expertise. Greater efficiency for frozen food than with direct expansion system, yet higher cost of machinery and installation. Increased risk, due to large amount of CO2 stored. SOLUTION B FRESH (50%) • FREEZE (≥ 50%) FRESH • FREEZE FRESH (75%) • FREEZE (≤ 25%)FRESH (75%) • FREEZE (25%) INDUSTRIAL SOLUTIONS CO2 RACK DIRECT EXP. NH3 CHILLER RACK ( ) CO2 COND. UNIT DIRECT EXP. NH3 CHILLER RACK ( ) CO2 RACK PUMPED NH3 CHILLER RACK ( ) ( ) FLOODED NH3 PUMPED RACK NH3 LOW TEMP. PUMPED RACK ( )( ) FLOODED FLOODED INSTALLATIONS
  • 7. 7 INDUSTRIAL SOLUTIONS Allows for freezing at lower temperatures, with higher quality freezing process. R23 refrigerant in cascade system. HFCs or NH3 plant required for condensation. Used in individual tunnel installations. Medium level of complexity, but high installation cost. A very good solution for freezing tunnels. Uses subcritical CO2 cascade system. Allows for installation by either direct expansion or flooded system, the latter being more efficient, albeit with higher cost and higher professional and safety requirements. Condensation by HFCs or by glycol cooled by HFCs or NH3 . R23 -70°C CO2 -45°C A traditional solution, less efficient and with greater limitations than CO2 solution, which can evaporate up to -45ºC. NH3 tunnels can be of two types: NH3 gravity feed or pump circulation systems. -40°CNH3 APPLICATIONS: FREEZING TUNNELS
  • 8. 8 QUALITY OF THE EXECUTIONS Machine room As these are factory-finished products, the standard of quality certified during fabrication is maintained and installed machinery is fully guaranteed. Electrical installation On-board electrical switchboard guarantees that units can be delivered, tested and fully connected. Installation Tewis systems greatly simplify installation, making it much easier to control quality and time. MODULARITY AND PHASES Tewis systems are designed to allow for modular adaptation, which is particularly useful when renovating an existing facility or when planning phased industry growth. Modularity has a very important advantage over the traditional solutions offered by large compressors and machine rooms, which complicate renovations and limit facility expansions, due to initial over-investment or space. TEWIS INDUSTRIAL INSTALLATIONS ADVANTAGES INDUSTRIAL SOLUTIONS
  • 9. 9 COSTS SAVINGS Machine room CI-Box bodywork Plug & Play unit installed outside, making traditional machine room unnecessary and producing cost savings and larger surface area available for other uses. Electrical installation Electrical switchboard mounted on refrigeration plant, avoiding costly electrical installations. Installation Controlled and reduced installation costs in terms of time, materials, employees and unforeseen contingencies. CONTROL Costs savings Our technology partner Eliwell, specialists in HVAC and refrigeration control, produces controllers especially designed for industrial facilities with highly competitive price and easy market access. Standardisation In-house software development department standardises different solutions and simplifies unit programming, making our solutions less expensive than others. Monitoring and remote management Eliwell has over 5,000 remote management and monitoring systems installed throughout Spain, providing high-quality services which are easy to implement and operate. CI-BOX: INDUSTRIAL MACHINE ROOM INDUSTRIAL SOLUTIONS Alarm box and NH3 extraction
  • 10. 10 Tewis offers an integrated management system for industrial solutions, capable of combining the expected advantages of the latest industrial software on the market with its wide experience in modular software and distributed control systems. INSTALLATION MANAGEMENT EXAMPLE: GLYCOL COOLING INSTALLATION + PUMPED CO2 A B C D E A B C D E F F INDUSTRIAL SOLUTIONS NH3 cooler control + Cooling tower + Exchanger - Primary hydraulic group CO2 compressor rack controller + glycol condensation. Cascade system. SUCTION DISCHARGE OIL GLYCOL TOWER GLYCOL DEFROST GLYCOL CO2 CONDENSATION LIQUID PIPES • COLOR CODE Suction separator control + flooded system pumping group
  • 11. 11 FREE EVOLUTION THE HIGHEST IN THE RANGE OF PROGRAMMABLE CONTROLS • Available in 8 DIN RAIL format. • Expandable with up to 5 optional modules. • Built-in or remote graphical user terminal interface. • Integration with remote tactile terminal via Ethernet network. • Integration in industrial systems (Modbus®, CANopen® and Profibus®*). • Integration in BMS systems (LonWorks®* and BacNet®*). • Integration in Ethernet networks (TCP/IP). • Updatable using a standard USB key. * Requires specific programming. Please ask our sales department. RTX EVAPORATOR CONTROLLER FOR INDUSTRIAL REFRIGERATION • Control of pulse-type EEVs for direct expansion systems. • Smart defrosting management, even with hot gas. • Possibility of 2 control sensors (evaporator return and discharge) and control by weighted average. • LINK2 synchronisation between evaporators. • Optimal energy management for ventilators, type of defrosting, lights and heaters. • EC fan control. • Rapid installation and configuration. • Compact dimensions (10 DIN). TEWIS TOUCH DISPLAY FOR INDUSTRIAL REFRIGERATION MONITORING • 24Vdc power supply. • Integrated Ethernet port. • 15” LCD TFT 4:3 XGA, 1024x768, 16M colors backlight LED, 450 cd/m2 ▪ Vision angle L: R/U:L (typ.): 80°:80°/70°:70° • Dimensions: A=390mm, B=305mm, C=378mm, D=294mm, H=6mm, F=48,5mm • Weight= 3,3Kg. HARDWARE FEATURES TELEVIS GO MONITORING SYSTEM FOR INDUSTRIAL REFRIGERATION UNITS High-range, market-leading controller for management, data logging and full remote control of installation. Main energy and functional advantages: • Industrial PC. • Windows 7 Embedded. No need to install operating system. • Televis Go already installed, simply configure instrument network. • Integrated web server. • Over one year of registration with integrated Flash memory. • Digital data reading in asynchronous mode. • No ventilation required. INDUSTRIAL SOLUTIONS
  • 12. 12 COMPRESSORS REGULATION • Capacity regulation with one converter per compressor. The first can be controlled by frequency converter or by differential version. • Can manage different types of compressor: screw, semi- hermetic, open and compact. • Rotation based on hours of operation, with monitoring provided in manual mode. • Compressor management by neutral zone or proportional band, depending on parameter. • Regulation by suction pressure (compressor system) or by charge or return temperature in event of sensor error with automatic offset (chiller). • Control of operating limits by pressure and temperature of discharge. • Blocking of charge and discharge alarm due to temperature or pressure of discharge. • Monitoring of suction pressure and temperature, as well as oil injection into compressors. • GENERAL FEATURES • Controls multi-compressor units of semi-hermetic, open and compact screw compressors. • Controls evaporative condenser or cooling tower. • Manages suction separator and pumping group in CO2 and NH3 flooded systems. • Controls chillers. • Manages cooler hydraulic group with possible Modbus pump management (please consult sales department). • Two programmable controllers for cascade systems, with inter-management via digital inputs and outputs. • Control of glycol condensation for cascade or direct expansion systems using Eliwell V910 regulator. • Includes algorithms for oil or gas cooler. MACHINERY ROOM SOFTWARE INDUSTRIAL SOLUTIONS
  • 13. 13 EXCHANGER / CHILLER • Minimum, medium and maximum level, and high level. • Operational status ON and operational status OFF. • Regulation by number of working compressors. • Management of up to 3 pumps by RTU Modbus. • Can be managed by differential pressure, discharge or return pressure. • Pump rotation based on hours of operation and in case of breakdown. • Maximum of 2 pumps in operation, with 1 reserve. CONDENSATION MANAGEMENT Condenser and evaporative tower • 1 water pump stage. • 2 ventilator stages. • 1 minimum water tank level entry. • Fan management using frequency converter. • Regulation by discharge pressure and by proportional band. • Floating condensation. Glycol condensation • Up to 2 control pumps with frequency converter, managed by pressure or glycol temperature, and including service request management. SEPARATOR IN PUMPED SYSTEMS • Management of 2 pumps with possible of frequency converter. Rotation based on hours of operation; digital input from differential pressure control switch with time delay for confirmation of priming. Includes management of retries and visualisation of attempt counter. • Minimum and maximum level. • Working level ON and working level OFF. • Regulation based on chilling requirements. INDUSTRIAL SOLUTIONS
  • 14. 14 SOLUTIONS FOR COLD STORAGE CONTROL, REFRIGERANT LEAK DETECTION, MAN-INSIDE ALARM AND BODYWORK EXTRACTION RTX600/V COLDFACE ID985 SOLUTIONS FOR EVAPORATORS CONTROL SPECIAL APPLICATIONS • HAM / CHEESE CURING ROOMS • DEGREENING • AIRING • TUNNEL • CONTINUOUS TUNNEL • BREAD FREEZING • MUST PASTEURIZATION Programming of thermal profiles for processes Installation diagram for compressor monitoring COLD ROOM CONTROL AND SPECIAL PROCESSES INDUSTRIAL SOLUTIONS IP 66Cámara T-
  • 15. 15 INSTALLATION MONITORING REGULATOR PER MACHINE + GENERAL TOUCH SCREEN REGULATOR + TOUCH SCREEN PER MACHINE + GENERAL SCREEN MACHINERY ROOM MACHINERY ROOM CONTROL ROOM CONTROL ROOM INSTALLATION INDUSTRIAL SOLUTIONS
  • 16. Certificates 2006/42 CE 2004/108 CE-93/68 CEE 2006/95 CEE-93/68 CEE 97/23 CEE Parque Tecnológico Auguste y Louis Lumière, 26 46980 Paterna (Valencia) ES Tel.: (+34) 96 313 42 02 Fax: (+34) 96 350 07 87 www.tewis.com info@tewis.com MKT2-272ENV6 16