Emerson Copeland EazyCool OME-4MTL-05X, Copeland EazyCool OME-4MTL-07X, Copeland EazyCool OME-4MTL-09X Application Manuallines
Application Guidelines
Copeland Eazycool
™
CO2 Refrigeration Units
C6.1.11/0718-0619/E
About these guidelines .............................................................................................. 1
1 Safety instructions .......................................................................................... 1
1.1 Icon explanation ............................................................................................................... 1
1.2 Safety statements ............................................................................................................ 1
1.3 General instructions ......................................................................................................... 2
2 Product description ........................................................................................ 3
2.1 General information about Copeland EazyCool™ CO2 refrigeration unit ........................ 3
2.2 EU Ecodesign Directive 2009/125/EC ............................................................................. 3
2.3 Main product features ...................................................................................................... 4
2.4 Product nameplate ........................................................................................................... 5
2.5 Nomenclature ................................................................................................................... 5
2.6 Application range ............................................................................................................. 6
2.6.1 Qualified refrigerant and oil .................................................................................. 6
2.6.2 Application limits ................................................................................................... 6
2.6.3 Recommendations for minimum suction superheat – Lubrication conditions ...... 6
2.6.4 Pressure levels of CO2 vs. other refrigerants ....................................................... 7
2.7 Main components description .......................................................................................... 8
2.7.1 Compressor .......................................................................................................... 8
2.7.2 Electrical cabinet .................................................................................................. 8
2.7.3 Liquid receiver ...................................................................................................... 9
2.7.4 Fan ....................................................................................................................... 9
2.7.5 Condenser / gas cooler regulation valve (HPV) ................................................... 9
2.7.6 Flashgas bypass valve (BPV) .............................................................................. 9
2.7.7 Housing .............................................................................................................. 10
2.7.8 Exploded view of the CO2 unit ............................................................................ 11
2.7.9 P&I diagram for CO2 units .................................................................................. 12
2.7.10 Design pressures ............................................................................................... 12
2.8 CO2 Unit control – General ............................................................................................ 13
2.8.1 iPro IPR215D controller description ................................................................... 14
2.8.2 Visograph display description ............................................................................ 14
2.9 How to use the iPro IPR215D controller ........................................................................ 15
2.9.1 How to change parameters ................................................................................ 15
2.9.2 Parameter grouping ............................................................................................ 16
2.9.3 "Service" menu ................................................................................................... 17
2.9.4 How to enter the "Service" menu ....................................................................... 17
2.9.5 How to check the values of analog outputs........................................................ 18
2.9.6 How to check the status of the relays / loads ..................................................... 18
2.9.7 How to perform a maintenance using the "Compressors service" sub-menus .. 19
2.9.8 How to check the values of digital inputs ........................................................... 20
2.9.9 How to check the values of the probes .............................................................. 21
C6.1.11/0718-0619/E
2.9.10 How to set the date and time ............................................................................. 21
2.9.11 How to check the operating values of the frequency inverter M200 .................. 22
2.9.12 Controller setting ................................................................................................ 22
2.9.13 Manual compressor run ...................................................................................... 22
2.9.14 How to reset the controller to factory settings .................................................... 23
2.9.15 How to save user’s settings................................................................................ 23
2.9.16 Data logging ....................................................................................................... 23
2.9.17 Active alarm(s) log menu.................................................................................... 24
2.10 iPro IPR215D controller – Functionality ......................................................................... 25
2.10.1 Suction pressure control..................................................................................... 25
2.10.2 Pumpdown mode ............................................................................................... 26
2.10.3 Fan speed / gas cooler control ........................................................................... 26
2.10.4 Alarms ................................................................................................................ 27
2.11 iPro IPR215D controller – Peripheral devices ............................................................... 29
2.11.1 XEV20D Stepper valve actuator ........................................................................ 29
2.11.2 Variable frequency drive M200 .......................................................................... 29
2.11.3 Main contactor and circuit breakers ................................................................... 29
2.12 Compressor safety ......................................................................................................... 30
2.12.1 Compressor motor protection ............................................................................. 30
2.12.2 High-pressure safety (type-approved pressure limiter) ...................................... 30
2.12.3 High-pressure safety control .............................................................................. 30
2.12.4 Pressure relief valve – High-pressure side ........................................................ 31
2.12.5 Pressure relief valve – Liquid receiver ............................................................... 31
2.12.6 Low-pressure safety control ............................................................................... 32
2.13 Oil level monitoring device OW5 TraxOil ....................................................................... 33
3 Installation ..................................................................................................... 34
3.1 CO2 Refrigeration unit handling ..................................................................................... 34
3.1.1 Transport and storage ........................................................................................ 34
3.1.2 Weights............................................................................................................... 34
3.1.3 Lifting .................................................................................................................. 35
3.2 Refrigeration piping connections ................................................................................... 36
3.2.1 Refrigeration piping installation and connections ............................................... 36
3.2.2 Brazing recommendations.................................................................................. 37
3.3 Electrical connection ...................................................................................................... 38
3.3.1 Power supply connections.................................................................................. 38
3.3.2 Electrical wiring .................................................................................................. 39
3.3.3 Electrical protection standard (protection class) ................................................ 39
3.4 Location & fixings ........................................................................................................... 39
4 Start-up & operation ...................................................................................... 41
4.1 Evacuation ..................................................................................................................... 41
C6.1.11/0718-0619/E
4.2 Charging procedure ....................................................................................................... 43
4.2.1 Refrigerant charging procedure ......................................................................... 43
4.2.2 Oil charging procedure ....................................................................................... 43
4.3 Maximum compressor cycle .......................................................................................... 43
4.4 Checks before starting & during operation .................................................................... 44
5 Maintenance & repair .................................................................................... 45
5.1 Opening the unit housing ............................................................................................... 45
5.1.1 To open the electrical cabinet ............................................................................ 45
5.1.2 To open the compressor chamber ..................................................................... 46
5.1.3 To remove the fan safety grid ............................................................................ 46
5.1.4 To access the inner parts of the condenser / gas cooler ................................... 46
5.2 Replacing a compressor ................................................................................................ 47
5.3 Condenser fins ............................................................................................................... 47
5.4 Electrical connections .................................................................................................... 48
5.5 Routine leak testing ....................................................................................................... 48
5.6 Condenser fan & motor .................................................................................................. 48
6 Certification & approval ................................................................................ 48
7 Dismantling & disposal ................................................................................. 48
DISCLAIMER ............................................................................................................. 49
Appendix 1: Alarm menu iPro IPR215D controller ................................................. 50
Appendix 2: Temperature / resistance curve for NTC ............................................ 58
Appendix 3: Temperature / resistance curve for PTC ................................ ............ 60
Appendix 4: Ecodesign overview tables according to Regulation 2015/1095/EU 62
Appendix 5: List of tables and figures .................................................................... 64
C6.1.11/0718-0619/E 1
About these guidelines
The purpose of these application guidelines is to provide guidance in the application of Copeland
EazyCool™ refrigeration units for natural refrigerant CO2. They are intended to answer the questions
raised while designing, assembling and operating a system with these products.
Besides the support they provide, the instructions listed herein are also critical for the proper and
safe functioning of the refrigeration units. Emerson will not guarantee the performance and reliability
of the product if it is misused in regard of these guidelines.
These application guidelines cover stationary applications only. For mobile applications, contact
Application Engineering as other considerations may apply.
1 Safety instructions
Copeland EazyCool™ CO2 refrigeration units are manufactured according to the latest European
Safety Standards. Particular emphasis has been placed on the user's safety.
These refrigeration units are intended for installation in machines and systems according to the
Machinery directive MD 2006/42/EC. They may be put to service only if they have been installed in
these systems according to instructions and conform to the corresponding provisions of legislation.
For relevant standards please refer to the Manufacturer’s Declaration, available at
www.climate.emerson.com/en-gb.
These instructions should be retained throughout the lifetime of both the compressor and the
refrigeration unit.
You are strongly advised to follow these safety instructions.
1.1 Icon explanation
WARNING
This icon indicates instructions to
avoid personal injury and material
damage.
CAUTION
This icon indicates instructions to avoid
property damage and possible
personal injury.
High voltage
This icon indicates operations with a
danger of electric shock.
IMPORTANT
This icon indicates instructions to avoid
malfunction of the compressor.
Danger of burning or frost burn
This icon indicates operations with a
danger of burning or frost burn.
NOTE
This word indicates a recommendation
for easier operation.
Explosion hazard
This icon indicates operations with a
danger of explosion.
1.2 Safety statements
▪ Refrigerant compressors and units must be used in accordance with their intended use.
▪ Only qualified and authorized HVAC or refrigeration personnel are permitted to install,
commission and maintain this equipment.
▪ Electrical connections must be made by qualified electrical personnel.
▪ All valid standards for connecting electrical and refrigeration equipment must be
observed.
▪ The national legislation and regulations regarding personnel protection must be
observed.
Use personal safety equipment. Safety goggles, gloves,
protective clothing, safety boots and hard hats should be worn where
necessary.
2 C6.1.11/0718-0619/E
1.3 General instructions
WARNING
System breakdown! Personal injuries! Never install a system in the field
and leave it unattended when it has no charge, a holding charge, or with the
service valves closed without electrically locking out the system.
System breakdown! Personal injuries! Only CO2 and approved refrigeration
oils must be used.
WARNING
CO2 refrigerant! Danger of suffocation! Never release significant volumes
of CO2 or the entire contents of the system into closed rooms. In case of closed
room, if possible, keep the room well ventilated and/or install a CO2 detection
device. CO2 is odourless and colourless, so it cannot be perceived directly in
case of emission.
WARNING
Earth leakage current! Danger of electric shock! This product can cause
both AC and DC earth leakage current. To protect against both kinds of leakage
current it is recommended to use an AC/DC sensitive RCD type B or B+ on
the power supply side.
WARNING
High surface temperature! Burning! Do not touch the compressor or piping
until they have cooled down. Ensure that other materials in the area of the
compressor do not come into contact with it. Mark and secure accessible
sections.
CAUTION
Overheating! Bearing damage! Do not operate compressors without
refrigerant charge or without being connected to the system.
CAUTION
Contact with POE! Material damage! POE lubricant must be handled
carefully and the proper protective equipment (gloves, eye protection, etc.)
must be used at all times. POE must not come into contact with any surface
or material that it might damage, including without limitation, certain polymers,
eg, PVC/CPVC and polycarbonate.
IMPORTANT
Transit damage! Compressor and/or unit malfunction! Use original
packaging. Avoid collisions and tilting.
The contractor is responsible for the installation of the unit and should check the following points:
▪ Sufficient liquid sub-cooling in the line to the expansion valve(s) to avoid "flash-gas" in the liquid
line;
▪ Sufficient amount of oil in the compressor (in case of long piping additional oil must be charged).
C6.1.11/0718-0619/E 3
2 Product description
2.1 General information about Copeland EazyCool™ CO2 refrigeration unit
Emerson has developed the Copeland™ EazyCool CO2 refrigeration unit to meet primarily the
demands of the food retail and food service sectors. It is an air-cooled refrigeration unit that uses the
latest Copeland™ brand products transcritical Stream compressors with inverter. All electronic
protection and diagnostics features are built in the chassis, as well as the controls for the refrigeration
unit.
Figure 1: Front view CO2 unit
2.2 EU Ecodesign Directive 2009/125/EC
The European Directive 2009/125/EC with regard to Ecodesign requirements for professional
refrigerated storage cabinets, blast cabinets, condensing units and process chillers requires
manufacturers to decrease the energy consumption of their products by establishing minimum
energy efficiency standards. Copeland brand products condensing units are prepared and optimized
to meet the requirements of the Ecodesign Directive. The integrated variable speed fan and
condenser reduce the noise level and energy consumption significantly. This, combined with
Copeland Stream CO2 compressor technology, allows for high-efficiency operation.
These guidelines meet the requirements of Regulation 2015/1095, Annex V, section 2(a), with regard
to product information, namely:
▪ (v) ➔ See chapter 2.6 "Application range"
▪ (vi) ➔ See chapters 5.3 "Condenser fins" and 5.5 "Routine leak testing"
▪ (vii) ➔ See chapter 4.2 "Charging procedure"
▪ (viii) ➔ See chapter 7 "Dismantling & disposal"
The Ecodesign overview tables according to Annex V of Regulation 2015/1095/EU for all Copeland
EazyCool CO2 units can be found in Appendix 4.
4 C6.1.11/0718-0619/E
2.3 Main product features
Copeland EazyCool refrigeration units are released for CO2 (R744) refrigerant only. They are
available in one cabinet size and are always equipped with one fan.
The units are designed for medium temperature applications only. The inverter is calculated to drive
the compressor in subcritical and transcritical applications.
Refrigeration unit
Refrigerant
type
Displacement
@ 50 Hz [m3/h]
Cooling
capacity*
[kW]
Nominal
power
[kW]
Max.
current
[A]
Ps
high side
[bar]
Ps
low side
[bar]
OME-4MTL-05X
R744
4.6
8.72
11
19
120/90
90
OME-4MTL-07X
6.2
11.81
14
22
OME-4MTL-09X
7.4
14.65
16
27
* Cooling capacity declared at ambient temperature 32°C, evaporating temperature -10°C, suction temperature
0°C and compressor frequency 50 Hz
Table 1: CO2 unit technical data
Refrigeration unit
Outer dimensions
length/width/height with
closed cover [mm]
Weight
[kg]
Liquid
receiver size
[litres]
OME-4MTL-05X
1579 / 954 / 1109
440
24.9
OME-4MTL-07X
450
OME-4MTL-09X
462
Table 2: CO2 unit features
The figures hereafter show the overall physical dimensions of the CO2 refrigeration units in
millimetres.
Figure 2: Dimensions of models OME-4MTL-05X, OME-4MTL-07X & OME-4MTL-09X
NOTE: When the electrical cabinet cover is open the total height is 1722 mm. This must be
taken into consideration when deciding on the unit location, to ensure easy access to the
electrical cabinet.
C6.1.11/0718-0619/E 5
2.4 Product nameplate
The refrigeration unit nameplate shows model designation and serial number, as well as nominal
power and safety pressures.
The compressor has its own nameplate with all electrical characteristics.
Figure 3: Nameplate of CO2 units
2.5 Nomenclature
The model designation contains the following technical information about Copeland EazyCool CO2
refrigeration units:
Figure 4: Nomenclature of CO2 units
6 C6.1.11/0718-0619/E
2.6 Application range
2.6.1 Qualified refrigerant and oil
Oil recharge values can be taken from Copeland brand products Select software available at
www.climate.emerson.com/en-gb.
Qualified
refrigerant
R744 (CO2)
Qualified
servicing oil
Polyolester Emkarate RL 68 HB
Oil charge
in litres
OME-4MTL-05X
OME-4MTL-07X
OME-4MTL-09X
1.5
1.5
1.5
Table 3: Qualified refrigerant and oil
NOTE: Use only lubricants that are qualified for the product. The use of non-approved
lubricants can damage the product and will result in loss of warranty!
NOTE: The polyolester oil is very hygroscopic. Never keep the system open to the ambient. If
for any reason there is no refrigerant in the system, it is recommended to charge the system
with a protective gas, eg, inert gas N2.
The recommended quality for carbon dioxide purity class is 4.0 [(≥ 99.99%) H2O ≤ 10 ppm,
O
2
≤ 10 ppm, N
2
≤ 50 ppm] or higher.
The characterization of R744 (CO2) according to EN 378-1 is safety class A1, not flammable,
ODP = 0 and GWP = 1. High concentrations of CO2 are dangerous. This refrigerant is odourless and
colourless. Therefore the use of CO2 detectors is required.
CO2 is heavier than air. As a result, local concentrations (especially at floor level or in deeper slots =
CO2 pockets) can be higher than average values in the machine room. The ventilation system must
take this into account.
2.6.2 Application limits
WARNING
Oil dilution due to low superheat! Compressor breakdown! Low suction
superheat leads to oil dilution. Always operate the system with adequate
superheat to avoid oil viscosity decrease. Additional measures in system
design might help to avoid unacceptable lubrication conditions.
For the application envelope, please refer to Select software at www.climate.emerson.com/en-gb.
2.6.3 Recommendations for minimum suction superheat – Lubrication conditions
The operation of CO2 compressors / units at conditions where the viscosity of the oil is low might
become very harmful with regard to compressor lifetime expectancy. Indicators like oil temperature
and discharge temperature must be observed to judge about the lubrication conditions. Depending
on the application (low temp, medium temp, parallel compression, etc.…) different minimum suction
superheat values should be respected to secure maximum protection of the compressor. In general,
higher superheat on the suction inlet of a compressor provides higher safety, but the limits for the
maximum allowable discharge temperature should be considered as well (superheat has a direct
impact on discharge temperature). For medium temperature applications, an absolute minimum of
10K is recommended.
Particular attention should be paid to the following points:
▪ Measuring the suction superheat becomes more critical with larger diameters on the suction
tube. Ensure proper positioning of sensor. Sensor sleeves must be used with large diameters.
▪ The oil temperature is measured by the dedicated unit sensor and can be read out from the
Visograph display in the service menu.
▪ The discharge temperature is observed by the unit controller. The temperature on the discharge
line should never exceed 135°C (measured directly after the compressor shut-off valve). The
temperature of the discharge gas on the outlet of the valve plate is 10-15K higher than the
temperature on the discharge line.
C6.1.11/0718-0619/E 7
2.6.4 Pressure levels of CO2 vs. other refrigerants
Figure 5 below compares the evaporating pressures of R744 to those encountered with R410A and
R404A. It can be observed that R744 systems will require to operate at much higher pressures than
conventional systems.
Note that below a pressure of 5.2 bar, solid and gaseous R744 phases may co-exist at low
temperature. This behaviour is totally different from that observed with traditional refrigerants, and
will have important consequences on the operation, servicing and maintenance of a system working
with R744.
Gaseous R744 is 1.5 times heavier than air. Therefore, when released to the air it will concentrate
at low elevations.
R744 will form "dry ice" at -56.6°C. One kg of dry ice has the cooling capacity of 2 kg of ordinary ice.
Gaseous or liquid R744 stored under pressure will form dry ice through an auto-refrigeration process
if rapidly depressurized.
Figure 5: Pressure levels of CO
2
Figure 6 shows the thermodynamic properties (p-h-diagram) of R744. Compared to other fluids
traditionally used as refrigerants, its critical point at 31°C is very low and its critical pressure at about
73.6 bar is high.
Figure 6: Pressure/enthalpy diagram CO2
8 C6.1.11/0718-0619/E
2.7 Main components description
Figure 7: Main components of CO2 unit
2.7.1 Compressor
The compressor is installed in the chamber below the electrical cabinet. The standard delivery is with
shut-off valve on discharge, CoreSense Protection module, oil watch system connected to one of the
sight glass connections. One additional sight glass on the opposite side of the compressor allows for
a visual check of the oil level. A third sight glass located in the crankcase cover will give an indication
that there is oil on the inlet of the oil splasher.
All electrical wiring is pre-assembled in the factory. A pressure relief valve (135 bar) is installed
directly on the compressor. A pressure cut-out device is installed on the discharge side of the
compressor in compliance with EN 378 requirements.
2.7.2 Electrical cabinet
The electrical cabinet is located on the edge above the compressor chamber beside the fan. All
electrical components like main unit controller, inverter, contactors, transformers, wiring terminals
and fuses are installed in this area. The electrical cabinet is covered by a hinged upper shell which
can be fixed in two opening angles.
Figure 8: Electrical cabinet
C6.1.11/0718-0619/E 9
2.7.3 Liquid receiver
The liquid receiver (24.9 litres for the whole range of units) is installed below the condenser / gas
cooler. It is equipped with a shut-off valve on the outlet and a safety group (2 pressure relief valves
90 bar, connected to a switch-over valve).
There are 2 sight glasses in the shell of the liquid receiver to check the refrigerant level.
2.7.4 Fan
The condenser of the Copeland EazyCool CO2 refrigeration unit is equipped with an EC fan.
Figure 9: Fan design
Fan
Power
input
[W]
Maximal
current
[A]
Air flow
[m³/h]
Unit
Description
OME-4MTL-05X
FN071-6IQ.BD.V7P3
280
1.4 - 1.0
7100
OME-4MTL-07X
FN071-ZIQ.DG.V7P3
660
3.4 - 2.4
11950
OME-4MTL-09X
FN071-ZIQ.DG.V7P3
660
3.4 - 2.4
11950
Table 4: Fan specifications
Technical data
Supply frequency
[Hz]
50/60 Hz
Supply voltage
[V]
200-277
Min to max ambient temperature
[°C]
-35 to +60
ErP 2015
[-]
Yes
IP class
[-]
IP54
Fan motor type
[-]
EC
Fan blades
[-]
Plastic
Table 5: Fan technical data
2.7.5 Condenser / gas cooler regulation valve (HPV)
The high-pressure regulation valve is installed between the condenser / gas cooler and the liquid
receiver. It regulates the high pressure for optimum COP in transcritical operation.
The driver for the stepper motor valve is installed in the electrical cabinet.
The driver for the HPV is an XEV20D. It gets a signal from the iPro unit controller – see chapter 2.8
"CO2 Unit control – General".
2.7.6 Flashgas bypass valve (BPV)
The flashgas bypass valve is installed between the flashtank and the suction line to the compressor.
Without the flashgas bypass valve there is a risk of unacceptably high pressure in the flashtank in
case the ambient temperature exceeds 35°C. The flashgas bypass valve is aimed at keeping the
flashtank pressure below a set level defined by parameter GC20 (factory-set at 35 bar) at all times.
10 C6.1.11/0718-0619/E
If a system does not require cooling capacity and the ambient temperature around the unit is high,
the pressure in the flashtank section will increase. When reaching a critical pressure limit defined by
parameter GC78 (factory-set at 40 bar) inside the flashtank during compressor stop, the compressor
will start and perform a short pumpdown cycle to reduce the pressure level in the flashtank area.
2.7.7 Housing
Copeland EazyCool CO2 refrigeration units have a new, unique design. They are equipped with an
electrical cabinet located above the compressor chamber with a hinged cover for easy and servicefriendly access. The electrical cabinet and the compressor area are accessible independently. The
fan has vertical air flow and is protected by a safety grid. The gas cooler, liquid receiver and
connected parts are freely accessible by the service technician.
Figure 10: Overview of the unit housing
Figure 11: Position of the connections
C6.1.11/0718-0619/E 11
2.7.8 Exploded view of the CO2 unit
Figure 12: Exploded view of the unit
12 C6.1.11/0718-0619/E
2.7.9 P&I diagram for CO2 units
Figure 13: P&I diagram for CO2 units
Position
Description
Position
Description
1
Copeland Stream compressor
INV
Compressor inverter
2
Discharge mufler
B1
Suction pressure
3
Gas cooler/condenser
B2
Discharge pressure
4
Flash tank
B3
Liquid receiver pressure
5
Filter-dryer
B4
Suction gas temperature unit
6
Sight glass
B5
Suction gas temperature compressor
7
Ball valve
B6
Discharge line temperature
8
OW5 oil watch
B7
Gas cooler temperature
9
Pressure relief valve
B8
Oil temperature
HPV
High pressure valve
B9
Ambient temperature
BPV
Bypass valve
B10
Cabinet temperature
HP
High pressure limiter
Table 6: Legend of the P&I diagram for CO2 units
2.7.10 Design pressures
IMPORTANT
Piping design pressure! Risk of CO2 blow-off! The CO2 unit liquid and
suction line piping is designed for a design pressure (Ps) of 90 bar as
pressures around 85 bar can occur during normal operation. The installer must
always consider the system liquid and suction lines in terms of maximum
operating pressure. If the system piping design pressure is lower than 90 bar,
additional safety devices are required. The CO2 unit can control different
receiver pressures depending on the application (parameter GC20).
The unit has 2 different pressure areas:
▪ The design on suction side is made for a maximum allowable absolute pressure of 90 bar at
standstill. The section after the high-pressure valve (liquid line, liquid receiver, filter drier, sight
C6.1.11/0718-0619/E 13
glass) to the liquid line outlet of the unit is approved for an absolute pressure of 90 bar at
standstill too.
▪ A ½" fitting is pre-installed in the suction line for an additional pressure relief valve.
▪ The area with discharge pipe, condenser/gas cooler and high-pressure regulation valve is
approved for a maximum allowable absolute pressure of 120 bar.
Figure 14: Design pressures of CO2 unit
NOTE: The design pressure Ps is a safety-related value. The restrictions for reliable operation
of the unit are defined by the application envelope which can be found in Select software at
www.climate.emerson.com/en-gb.
2.8 CO2 Unit control – General
Copeland EazyCool CO2 refrigeration units are equipped with an iPro controller (IPR215D) and a
Visograph display. The iPro controller manages the compressor variable frequency drive through 010V and a digital signal. It also handles the high-pressure regulation which is done by a stepper
motor valve, driven by a standard driver device, controlled by iPro through CAN BUS. The stepper
motor valve driver can operate two valves simultaneously. The controller can handle gas cooler
pressure and liquid receiver pressure in parallel.
Figure 15: CO2 unit controller schematics
IPR215D
Visograph
14 C6.1.11/0718-0619/E
2.8.1 iPro IPR215D controller description
The iPro controller is a standard IPR215D Dixell controller. A detailed manual can be found at
www.climate.emerson.com/en-gb.
The controller is factory-set for -10°C evaporating temperature. To achieve the required
temperatures, Emerson recommends to change only the evaporating temperature as the rest of the
parameters are already pre-set.
NOTE: The other factory settings can be found in Technical Information CC7.8.11 "Copeland
EazyCool™ CO2 Refrigeration Units – iPro IPR215D Controller Parameter List".
2.8.2 Visograph display description
Figure 16: Visograph display
Position
Description
Comments
1
Compressor symbol
2
Percentage of analog output
for frequency compressor
For frequency compressor. Displays the percentage
of the analog output driving the inverter.
3
Suction pressure setpoint
4
Current value of suction
pressure
5 Alarm
Displayed when an alarm occurs in suction or gas
cooler/condenser section
6
Condensing pressure setpoint
7
Current value of condensing/
gas cooler pressure
8
Percentage of analog output
for EC fan
For fan inverter. Displays the percentage of the
analog output driving the inverter.
9
Number of activated fans
10
Fan symbol
11
Number of activated
compressors and steps
12
Gas cooler pressure
The same value is displayed in "Stage Gas Cooler
Info"
13
Outlet temperature
The same value is displayed in "Stage Gas Cooler
Info"
14
Receiver pressure
15
Gas cooler regulation valve
(HPV) % opening
16
Flash gas regulation valve
(BGV) % opening
17
Operating mode
Table 7: Display description – Legend
C6.1.11/0718-0619/E 15
OFF1
To switch the controller off. Press for 10 seconds to switch the controller off
(enabled only if parameter OT5 = yes)
PARAM
To enter the parameter programming menu
SERVICE
To enter the service menu
UNIT
Measurement unit: to switch the probe visualization and setpoint from
pressure to temperature and vice versa
ALARM
To enter the alarm menu
Table 8: Key functions
2.9 How to use the iPro IPR215D controller
2.9.1 How to change parameters
Press the PARAM key to access the programming menu.
Figure 17: iPro Parameter key
The device provides 2 programming levels:
▪ Pr1 with direct access – press Pr1 to enter this menu;
▪ Pr2 protected with a password – password set to 12 by factory.
If the password function is enabled, the following interface will be displayed when pressing the Pr2
key:
Figure 18: Password setting
To enter password:
1) Press the SET key
2) Use the UP and DOWN keys to enter password 12
3) Press the SET key to confirm password. The following interface will be displayed:
Figure 19: Password confirmation
4) Press ENTER to access the Pr2 menu
16 C6.1.11/0718-0619/E
2.9.2 Parameter grouping
The parameters are grouped in sub-menus.
No.
Parameter grouping
No.
Parameter grouping
1
Setpoint (SETC1, SETF1)
28
Analog outputs 4 (AO4_1- AO4_26)
2
Compressor rack setup (CF1, CF16)
29
Analog outputs 5 (AO5_1- AO5_26)
3
Regulation (CF18, CF20-CF22, CF24)
30
Analog outputs 6 (AO6_1- AO6_26)
4
Display (CF26-CF27)
31
Auxiliary outputs (AR1-AR18)
5
Analog inputs (AI1-AI31)
33
Superheat alarms (ASH1- ASH16)
6
Safety digital inputs (SDI1-SDI3)
34
Gas leak detector (GLD1-GLD20)
7
Digital inputs (CDI1, CDI3)
35
Other (OT1 – OT6)
8
Compressor function
(RC1-RC4, RC35-RC38, RC45)
36
DI configuration (DIC1- DIC20)
9
Compressor safety (SL1-SL11, SL14-SL15)
37
DO configuration (DOC1- DOC15)
10
Fan function (RC9-RC33, RC43, RC47-RC55)
38
AO configuration (AOC1- AOC6)
11
Fan safety (SL12, SL13, SL16)
41
AI configuration (AIC1- AIC10)
12
Fan setting for max COP (RC56-RC61)
42
CoreSense configuration
(CO1-CO2, CO16-CO17)
13
Fan regulation band optimization with
frequency compressor (RC62-RC69)
43
ECM (ECM01-ECM9)
14
Operating mode scheduling (OMS1-OMS21)
44
XEV02 (XEV1-XEV4)
15
Alarms configuration (AC1-AC2)
45
M200 (VFD1-VFD33)
16
Compressor alarms (AL1-AL21)
46
M200 (INV1-INV33)
17
Fan alarms (AL24-AL43)
47
HTR (HTR1-HTR4)
23
Dynamic setpoint suction (DSP1- DSP4)
48
EPM (EPM1-EPM18)
24
Dynamic setpoint condenser (DSP9-DSP11)
49
Gas cooler heat reclaim (HTRC1-HTRC13)
25
Analog outputs 1 (AO1_1- AO1_26)
50
Gas cooler (GC1-GC64)
26
Analog outputs 2 (AO2_1- AO2_26)
51
Manual pumpdown (SPF1, SPF2)
27
Analog outputs 3 (AO3_1- AO3_26)
52
Unit protection (DLT1-DLT24)
Table 9: Parameter grouping
NOTE: The parameter sub-menu will be visible only if at least one parameter in the group is
visible in Pr1 or Pr2.
Press the SET key to access a menu. The parameters and their respective values will be displayed
(see Figure 20 below).
Figure 20: Parameter level information
▪ Press the SET key and use the UP and DOWN keys to modify a value
▪ Press the SET key again to store the new value
▪ Use the UP and DOWN keys to move to the next parameter
NOTE: The Pr2 or Pr1 message is present only in the Pr2 menu. It is possible to modify the
level of each parameter by changing Pr2 to Pr1 and vice versa.
NOTE: After pressing the EXIT key, the previous screen will be displayed again.
C6.1.11/0718-0619/E 17
2.9.3 "Service" menu
The main functions of the controller are available from the "Service" menu and are listed below:
▪ check the values of analog outputs;
▪ check the status of compressor relays;
▪ operate a maintenance session;
▪ check the status of safety and configurable digital outputs;
▪ check the values of the probes;
▪ set the real-time clock;
▪ start a pumpdown;
▪ set the password and enable it for a defined menu;
▪ set the language;
▪ check the values of superheat probes;
▪ configure IP/Modbus address;
▪ manage / configure files;
▪ check the parameters of XEV20, XEV02, ECM, M200 and energy meter if these devices have
been configured;
▪ manage the log files;
▪ execute evacuation
▪ etc…
The following sub-menus are also available:
Probes
CoreSense setup
File management configuration
Analog outputs
CoreSense information
ip/mdb address configuration
Output (om)
Log file management
Real-time clock
Loads status
Update Visograph
Language
Digital inputs
M200 status
Password
Superheat (inactive)
Energy meter status
Gas cooler information
Pumpdown
XEV02 status
Compressor service circuit 1
Controller online/offline
Table 10: Sub-menu overview
2.9.4 How to enter the "Service" menu
Press the SERVICE key to enter the "Service" menu.
Figure 21: iPro "Service" key
The following interface will be displayed:
Figure 22: iPro "Service" menu
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