Emerson Copeland EazyCool ZXDI Series, ZXDI050E, ZXDI060E, ZXDI040E, ZXDI075E Application Manuallines
Application Guidelines
Copeland EazyCool
™
Indoor Condensing Units
ZXDI Range
C6.1.10/0118-0318/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 Common information about Copeland EazyCool™ ZXDI indoor condensing units ........ 3
2.2 EU Ecodesign Directive 2009/125/EC ............................................................................. 3
2.3 Product range .................................................................................................................. 3
2.4 Product nameplate ........................................................................................................... 3
2.5 Nomenclature ................................................................................................................... 3
2.6 Application range ............................................................................................................. 4
2.6.1 Qualified refrigerants and oils .............................................................................. 4
2.6.2 Application limits ................................................................................................... 4
2.7 Bill of material .................................................................................................................. 4
2.8 Main components description .......................................................................................... 4
2.8.1 Compressor .......................................................................................................... 4
2.8.2 Condenser fan(s) .................................................................................................. 5
2.8.3 Housing ................................................................................................................ 6
2.9 P&I diagram for ZXDI units .............................................................................................. 7
2.10 XCM25D Electronic controller – Features ....................................................................... 8
2.10.1 Description ........................................................................................................... 8
2.10.2 Functionality ......................................................................................................... 8
2.10.3 Main control & safety features .............................................................................. 9
2.10.4 Additional features for customization ................................................................. 10
2.11 XCM25D Electronic controller – Programming .............................................................. 12
2.11.1 Programming the local display ........................................................................... 12
2.11.2 Remote display CCM60 ..................................................................................... 13
2.11.3 Single commands ............................................................................................... 14
2.11.4 Double commands – Entering programming level 1 "Pr1" ................................. 14
2.11.5 How to program the parameters (Pr1 and Pr2) .................................................. 14
2.11.6 Entering programming level 2 "Pr2" ................................................................... 15
2.11.7 Fast access menu .............................................................................................. 15
2.12 Controller keyboard ........................................................................................................ 15
2.12.1 How to lock the keyboard ................................................................................... 15
2.12.2 How to unlock the keyboard ............................................................................... 16
2.13 Parameters level 1 – Required settings ......................................................................... 16
2.14 Digital operation ............................................................................................................. 16
2.15 Reset to factory settings – Emerson "Hot Key" ............................................................. 17
2.15.1 How to save factory settings or user settings .................................................... 17
C6.1.10/0118-0318/E
2.15.2 Emerson "Hot Key" for ZXDI units with XCM25D controller .............................. 17
2.15.3 Location of the "Hot Key" plug connection on the XCM25D controller .............. 18
2.15.4 How to program a "Hot Key" from the controller (upload) .................................. 18
2.15.5 How to program a controller using an Emerson "Hot Key" (download) ............. 18
2.16 Troubleshooting – Alarm history .................................................................................... 19
2.17 Compressor motor protection ........................................................................................ 19
2.18 System pressure protection ........................................................................................... 19
2.18.1 High-pressure safety switch ............................................................................... 19
2.18.2 High pressure: pressure relief valve ................................................................... 20
2.18.3 Low-pressure safety switch – Optional .............................................................. 20
2.18.4 Ambient temperature sensor .............................................................................. 20
2.19 Alarm output (DO5) ........................................................................................................ 20
2.20 Fan speed control – Ziehl-Abegg PKE-6 controller ....................................................... 20
2.21 Dimensions in mm ......................................................................................................... 21
3 Installation ...................................................................................................... 22
3.1 Condensing unit handling .............................................................................................. 22
3.1.1 Transport and storage ........................................................................................ 22
3.1.2 Weights............................................................................................................... 22
3.2 Electrical connection ...................................................................................................... 23
3.2.1 Power supply connections.................................................................................. 23
3.2.2 Maximum operating currents for cable selection ............................................... 23
3.2.3 Electrical wiring .................................................................................................. 23
3.2.4 Electrical protection standard (protection class) ................................................ 23
3.2.5 Overload protection ............................................................................................ 23
3.3 Refrigeration piping connections ................................................................................... 24
3.3.1 Refrigeration piping installation .......................................................................... 24
3.3.2 Brazing recommendations.................................................................................. 25
3.3.3 Brazing procedure .............................................................................................. 25
3.4 Location & fixings ........................................................................................................... 26
3.5 Required distances ........................................................................................................ 26
3.6 Air ducts connection ....................................................................................................... 27
4 Starting up & operation.................................................................................. 28
4.1 Evacuation ..................................................................................................................... 28
4.2 Charging procedure ....................................................................................................... 28
4.2.1 Refrigerant charging procedure ......................................................................... 28
4.2.2 Oil charging procedure ....................................................................................... 29
4.2.3 Oil separator ....................................................................................................... 29
4.3 Rotation direction of Scroll compressors ....................................................................... 29
4.4 Maximum compressor cycle .......................................................................................... 29
4.5 Checks before starting & during operation .................................................................... 30
C6.1.10/0118-0318/E
5 Maintenance & repair ..................................................................................... 31
5.1 Replacing a compressor ................................................................................................ 31
5.2 Condenser fins ............................................................................................................... 31
5.3 Electrical connections .................................................................................................... 31
5.4 Routine leak testing ....................................................................................................... 32
5.5 Condenser fans & motors .............................................................................................. 32
6 Certification & approval ................................................................................. 32
7 Dismantling & disposal .................................................................................. 32
DISCLAIMER .............................................................................................................. 33
Appendix 1: Overview of the ZXDI indoor unit components................................... 34
Appendix 2: Wiring diagram – ZXDI units (380-420V/3Ph/50 Hz) ............................ 35
Appendix 3: Parameter list level 1 (Pr1) ................................................................... 36
Appendix 4: Parameter list Level 1 & Level 2 (Pr1 & Pr2) ....................................... 37
Appendix 5: Alarm menu ........................................................................................... 55
Appendix 6: Additional features for customization ................................................. 60
Appendix 7: Temperature / resistance curve for B7 Sensor (customer option) .... 62
Appendix 8: List of tables and figures ..................................................................... 63
C6.1.10/0118-0318/E 1
About these guidelines
The purpose of these application guidelines is to provide guidance in the application of Copeland
EazyCool™ ZXDI indoor condensing units. 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 condensing 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™ ZXDI indoor refrigeration condensing units are manufactured according to
the latest European and US Safety Standards. Particular emphasis has been placed on the user's
safety.
These condensing 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.emersonclimate.eu.
These instructions should be retained throughout the lifetime of both the compressor and the
condensing 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.
WARNING
This icon indicates operation with
possible personal injury due to
uncovered rotating parts.
High voltage
This icon indicates operations with a
danger of electric shock.
CAUTION
This icon indicates instructions to
avoid property damage and possible
personal injury.
Danger of burning or frost burn
This icon indicates operations with a
danger of burning or frost burn.
IMPORTANT
This icon indicates instructions to
avoid malfunction of the compressor.
Explosion hazard
This icon indicates operations with a
danger of explosion.
NOTE
This word indicates a
recommendation for easier operation.
1.2 Safety statements
▪ Refrigerant compressors 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.
Safety
instructions
Product
description
Installation
Starting up &
operation
Maintenance &
repair
Certification &
approval
Dismantl
ing &
disposal
2 C6.1.10/0118-0318/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 approved refrigerants and
refrigeration oils must be used.
WARNING
High shell temperature! Burning! Do not touch the compressor until it has
cooled down. Ensure that other materials in the area of the compressor do not
get in touch with it. Lock and mark accessible sections.
WARNING
Uncovered rotating parts! No safety grids on the condenser fans!
Personal injuries! Never start the condensing unit or run the fans with no air
ducts connected or without protective end-grids on the air outlets.
CAUTION
Overheating! Bearing damage! Do not operate compressors without
refrigerant charge or without being connected to the system.
IMPORTANT
Transit damage! Compressor 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).
C6.1.10/0118-0318/E 3
2 Product description
2.1 Common information about Copeland EazyCool™ ZXDI indoor condensing
units
Emerson has developed the Copeland EazyCool™ ZXDI indoor condensing unit to meet primarily
the demands of the food retail and food service sectors. It is a refrigeration air-cooled condensing
unit that uses the latest Copeland™ brand products patented Scroll technology as the main driver
and has electronic protection and diagnostics features built in the compact chassis. The
combination of large condensers and low speed fans allows for particularly quiet operation.
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 scroll technology, allows for high-efficiency operation.
For the rated cooling capacity, rated power input and rated COP value please refer to Copeland™
brand products Select software at www.emersonclimate.eu.
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
▪ (vi) See chapters 5.2 and 5.4
▪ (vii) See chapters 2.10.3 and 4.2
▪ (viii) See chapter 7
2.3 Product range
Copeland EazyCool ZXDI condensing units are released for multiple refrigerants. They are
available in one cabinet size and are equipped with two fans. They are designed for medium
temperature refrigeration applications.
2.4 Product nameplate
The condensing unit nameplate shows model designation and serial number, as well as locked
rotor amps, maximum operating current, safety pressures and weight.
The compressor has its own nameplate with all electrical characteristics.
2.5 Nomenclature
The model designation contains the following technical information about the condensing unit:
Figure 1: Nomenclature ZXDI units
Safety
instructions
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description
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Starting up &
operation
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repair
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4 C6.1.10/0118-0318/E
2.6 Application range
2.6.1 Qualified refrigerants and oils
Qualified refrigerants
R404A, R407A, R407F, R448A, R449A
R134a, R450A, R513A
Qualified
servicing oils
Emkarate RL 32 3MAF
Mobil EAL Arctic 22CC
Condensing
unit
ZXDI040E
ZXDI050E
ZXDI060E
ZXDI075E
Oil charge in litres
1.36
1.89
Table 1: Qualified refrigerants and oils
WARNING
Use of R450A and R513A refrigerants! Risk of compressor damage!
Migration of R450A or R513A into the compressor crankcase could cause low
oil viscosity, which could lead to compressor damage. When using R450A or
R513A it is critical to meet the following requirements:
▪ maintain adequate superheat settings with a minimum superheat of 8-10K;
▪ no liquid refrigerant migration into the compressor at any time, especially
during standstill, during or after defrost, or after reverse mode for example
in heat pumps;
▪ pump-down is not recommended;
▪ the use of a crankcase heater is mandatory;
▪ retrofit to R450A and R513A is only allowed for compressors which are
approved for these refrigerants.
Contact your local Application Engineering representative for any further
information.
NOTE: The ZXDI units are equipped with an oil separator. This separator is pre-charged
with 0.5 liter of oil.
2.6.2 Application limits
For application envelopes, please refer to the compressor application envelopes which can be
found in Copeland™ brand products Select software, available at www.emersonclimate.eu.
ZXDI indoor condensing units can be used at an ambient temperature from -15°C to 45°C. For
lower ambient temperatures please contact your local Application Engineering representative.
2.7 Bill of material
BOM
Family
Introduction
date
Controller concept
Oil
separator
Suction
accumulator
554
ZXDI
Jan/2018
XCM25D (Emerson - Dixell)
Yes
No
Table 2: BOM
2.8 Main components description
2.8.1 Compressor
Condensing
unit
Compressor model
(Digital)
Compressor
LRA (A)
Compressor
MOC* (A)
Unit rated
current (A)
ZXDI040E
ZBD29KQE-TFD
48
7.9
11.3
ZXDI050E
ZBD38KQE-TFD
64
11.3
14.7
ZXDI060E
ZBD45KQE-TFD
74
11.4
14.8
ZXDI075E
ZBD48KQE-TFD
100
14
17.4
* MOC = Maximum Operating Current
Table 3: Cross reference table units/compressor models
C6.1.10/0118-0318/E 5
2.8.2 Condenser fan(s)
WARNING
Uncovered rotating parts! No safety grids on the condenser fans!
Personal injuries! Never start the condensing unit or run the fans with no air
ducts connected or without protective end-grids on the air outlets.
The condensers of the ZXDI condensing units are equipped with single-phase fans.
Condensing
unit
Nr. of fans
(pcs)
Fan blade
diameter
(mm)
Weight
per 1 fan
(kg)
Maximum
current @
100% per
1 fan (A)
Power
consumption
@ 100% per
1 fan (W)
ZXDI040E
2
450
~12
1.7
375
ZXDI050E
ZXDI060E
ZXDI075E
Table 4: Condenser fan technical data
Figure 2: Fan details and dimensions
Figure 3: Fan bracket details
Safety
instructions
Product
description
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Starting up &
operation
Maintenance &
repair
Certification &
approval
Dismantling &
disposal
6 C6.1.10/0118-0318/E
2.8.3 Housing
Copeland EazyCool ZXDI indoor condensing units have the following housing features:
▪ Controller-window in front of the cabinet door. The window is IP54 and shows the current
value of the electronic controller.
▪ The main power switch is installed on the cabinet door and allows to de-energize the unit
without opening the door. To open the door the main power switch must be in off position.
▪ The quick-locks allow for easy and quick opening of the cabinet door by means of the
cabinet key.
▪ The cabinet key is delivered with the unit. It is attached to one of the piping connections by
means of a cable strap.
Figure 4: ZXDI unit housing
C6.1.10/0118-0318/E 7
2.9 P&I diagram for ZXDI units
IMPORTANT
Check valve in front of liquid receiver! Risk of excessive internal
pressure caused by liquid expansion! Check required safety devices
according to EN 378.
Figure 5: P&I diagram for ZXDI units
Position
Description
Comments
Fast access
menu
1 (M1)
High efficient Copeland Scroll ZBD compressor
2
Oil separator
Pre-charged with 0.5 L
3 (M2)
Condenser with 2 fans
4
Liquid receiver with service valve
5
Filter drier / sight glass combination
6
Service valve, liquid line
7
Service valve, suction line
PSL (S2)
Adjustable low-pressure switch (not factory
mounted)
System safety
(option)
PSH (S1)
Non-adjustable high-pressure switch
System safety
PTL (B1)
Pressure sensor, low pressure
Compressor setpoint
P1P
PTH (B2)
Pressure sensor, high pressure
Fan speed control
P2P
TT1 (B3)
Discharge temperature sensor
Compressor safety
P3t
TT2 (B6)
Ambient temperature sensor
Additional functions
P6t
Table 5: Legend of the P&I diagram for ZXDI units
Safety
instructions
Product
description
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Starting up &
operation
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repair
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approval
Dismantling &
disposal
8 C6.1.10/0118-0318/E
2.10 XCM25D Electronic controller – Features
The XCM25D controller is designed to be a powerful, flexible controller for use in multiple
applications. It has been developed for ZXDI condensing units and allows the adjustment of all
relevant parameters by the user.
2.10.1 Description
WARNING
Electrical shock hazard! Serious personal injuries! There are unused fast-
on pins (C1 & DO2) on the XCM25D which could be under voltage. They are
covered by insulated fast-on flags in the factory. Handle carefully when
removing insulating flags during service on site.
The controller is designed for usage in an indoor refrigeration unit. It is rated to be used for the
following environment:
▪ Outdoor controller ambient temperature for operation: -40C to 60C
▪ Ambient temperature for storage: -40C to 80C
▪ Maximum humidity: 90% at 48C (non-condensing)
▪ Board power: 24V AC +15%/-20%
▪ Voltage sensing capabilities - Three phase: 200-240, 380-460, 575V AC ± 10%
The units of measure are selectable. The factory default unit is [bar] (always considered relative)
for pressure and [°C] for temperature.
Figure 6: Electronic controller
2.10.2 Functionality
The controller allows for easy commissioning by the technician with the factory settings at the
highest program level. It also offers the possibility to make substantial changes to the system
optimization in further programming levels. Advanced functionality can also be activated.
The following functions are covered by the controller:
▪ Condensing unit control
▪ Condenser fan control
▪ Voltage and current sensing (compressor protection)
▪ Digital compressor control
NOTE: The XCM25D controller on ZXDI units includes all the functions necessary for unit
control. For additional functionalities please contact your local Application Engineering
representative.
C6.1.10/0118-0318/E 9
Figure 7: XCM25D controller functionality overview
2.10.3 Main control & safety features
Suction pressure control: Each unit is equipped with a suction pressure transmitter. The
XCM25D controls the suction pressure by evaluating the input signal of the pressure transmitter.
When using a digital unit (ZXDI), the setpoint (C16/StC) and proportional band (C17/Pbd) need to
be adjusted. The signal of the suction pressure transmitter is also used for additional functionalities
and to keep the compressor running within the approved envelopes.
Condensing pressure control: Each unit is equipped with a high-pressure transmitter. The
XCM25D controls the condensing pressure by regulating the fan speed corresponding to the highpressure transmitter signal. The output signal of the unit controller to the fan speed controller is a
0-10V signal.
The unit controller can regulate the condensing pressure in two ways. The first approach is to keep
a constant condensing temperature. This mode is utilized by the factory settings. The pre-adjusted
setpoint is 27°C as a universal setting. If lower condensing pressure is required set up the
condenser setpoint (E39/FSP) to a lower value.
The second control way is fan modulation based on the compressor envelope. This mode of
setpoint control is only available if a suction pressure input is not used. The parameter (E38/FSM)
enables/disables the mode as needed. If this function is unused, the condensing temperature
setpoint will be set as a parameter (E39/FSP) value. The compressor is allowed to run at minimum
condensing temperatures based on the suction pressure of the compressor. This is the most
energy-efficient way to minimize the condensing temperature as much as possible.
NOTE: The fan speed controller is a Ziehl-Abegg PKE-6 controller. For more information
please refer to Chapter 2.20 "Fan speed control – Ziehl-Abegg PKE-6 controller" and to the
fan speed controller user’s guide – part of the unit standard delivery.
Maximal condenser fans pressure difference: To provide the condenser with appropriate air
flow the pressure drop for the fan must not exceed 60 Pa at 3500 m³/h per one fan. Additional
components such as mufflers, flaps, protection grids etc... must also be taken into account when
designing the air ducts route as they will cause additional pressure drop.
The following table shows pressure drops at 3500 m³/h for most commonly used ducting
components:
Spiral duct 500 mm
Ventilation bow 90°, 500 mm
1 Pa/m
10 Pa
Table 6
Example: If 8 meters spiral duct and 3 bows 90° are required on the installation, then
1 Pa × 8 + 10 Pa x 3 = 8 Pa + 30 Pa = 38 Pa, so 38 Pa < 60 Pa.
Compressor phase reversal: Ensures that the compressor keeps running in one direction only
(clockwise = right rotation) – necessary for a compliant Scroll compressor to compress and pump
refrigerant. Reset is automatic once the phase rotation is correct for the compressor.
Motor current overload protection: This feature eliminates the need for external current
protection for the compressor motor.
Condenser fan
control
Digital Scroll
control
Alarm
management
Electrical
protection
Monitoring of the discharge
line temperature
Safety
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10 C6.1.10/0118-0318/E
Fixed high-pressure switches: This is a non-adjustable protection device designed to prevent
the compressor from operating outside of its safe high-pressure range. Reset is automatic for a
set number of trips (7) then the unit will lock out and require manual restart. This feature is
important to prevent the unit from cycling under these controls for a long period of time.
▪ Cut-out: 28.8 bar
▪ Cut-in: 24 bar
Adjustable high-pressure limitation: The unit controller provides the possibility to stop the unit
at a required discharge pressure which is lower than the cut-out value of the fixed high-pressure
switch. Detailed instructions can be found in chapter 2.10.4 "Additional features for customization"
hereunder.
Discharge temperature protection: Each unit is equipped with a discharge line sensor (NTC).
The XCM25D controller will stop the compressor if discharge temperatures reach unacceptable
levels.
Adjustable low-pressure alarm: The unit controller features an adjustable low-pressure alarm
managed by the suction pressure sensor. This alarm has been factory-set at 0.5 bar(rel), ie, the
lowest permitted pressure of the refrigerant with the lowest pressure-vapour properties. If needed
the user can modify this value according to the required application.
Option: Adjustable low-pressure switches PS1: This device protects the system against lowpressure operation. It must be adjusted depending on running conditions and potential special
requirements like pump-down. The compressor envelopes published in Select must be respected
at all times. In case of controller breakdown, the low-pressure switch could be used for emergency
operation (rewiring required).
A crankcase heater is directly connected to the controller. The crankcase heater will be energized
when the ambient sensor is below a given value (10°C) and the compressor has been off for a
period of time (5 minutes). The minimum off time does not apply at initial power-up.
In addition to the above, the ZXDI indoor condensing unit has the following features:
▪ Liquid line assembly (filter drier and sight glass/moisture indicator)
▪ Anti-corrosion treatment to the condenser fins
The electronic controller is also the base controller for the connection of many optional and
customer supplied functions such as:
▪ Main load controller
▪ Evaporator fan contactor
▪ Superheat controller for one electronic expansion device
2.10.4 Additional features for customization
A lot of additional features are provided by the XCM25D controller. In the European design of the
electrical panel a few of the additional functionalities are prearranged and can easily be installed
by connecting additional hardware to the electrical terminals. The tables in Appendix 6 show the
parameters that have to be changed in case a special feature of the controller should be activated.
The tables do not show the required settings which have to be done by the system operator, eg,
choosing correct setpoints for different components and different applications.
NOTE: After programming an additional function, the system will have to be restarted. To
engage system restart, switch off the main power supply, wait for 5 seconds and switch it
on again.
Component
Description
Prearranged terminals /
Wiring diagram
B12
Low-pressure switch, optional; can be
ordered factory-installed.
Terminals: X1.2 / X1.7
Alarm contact
Sensor for evaporator or room
Terminals: X1.11 / X1.12
Sensor B7
Sensor for evaporator or room
(NTC10kΩ)
Terminals: X1.13 / X1.14
Table 7: Prearranged additional connections
C6.1.10/0118-0318/E 11
Figure 8: Prearranged additional connections
NOTE: Depending on the required functionalities additional components might be
necessary. Please contact your local Application Engineering representative.
NOTE: Check the current limitations given by the controller relays.
NOTE: The solenoid valve function is not available on ZXDI indoor units.
Digital output
Specifications
DO1, DO2 and DO3
Relay SPDT 16A, 250V AC
DO3
Relay SPST 8A, 250V AC
DO4 and DO5
Relay SPST 5A, 250V AC
Table 8: Digital output specifications
Adjustable discharge pressure limitation
The controller has dedicated parameters to provide the possibility of adjustable discharge pressure
cut-out.
Parameters
Description
Factory
settings
Recommended
settings
ZXDE
ZXDI
E58
AU2
Condenser temperature/pressure
threshold for high alarm
27
Required value
E61
AH2
Condenser temperature/pressure
threshold for alarm recovery
23
Required value
Table 9: Discharge pressure limitations
Low ambient operation
Very low ambient temperatures can result in malfunction of expansion devices because of
insufficient pressure difference. Therefore, pressure cut-out during system start-up can occur. For
proper operation of the expansion devices, the unit running time must allow to build up sufficient
condensing pressure.
At low ambient conditions, the compressor will need to run for a minimum period of time to allow
the system pressures to stabilize. If the unit operates below a defined ambient temperature
(ambient temp. < C12/LAO) or if the ambient sensor has failed, the compressor should run for a
set period of time (C14/LAS) when it is started based on a low suction reading.
Safety
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contact
12 C6.1.10/0118-0318/E
The unit will be turned on for the minimum run time when the low-pressure input is closed.
If the pressure drops below the cut-out value or the low-pressure input opens, the unit should
continue to run for the remaining minimum on time (C14/LAS) or until a satisfactory condenser
pressure is reached (C13/LAd).
If a suction pressure transducer is present and the suction pressure falls below a given value
(C15/LAT) during the minimum on time (C14/LAS), then disregard the timer and shut the
compressor off to protect against vacuum operation.
NOTE: For additional features please contact your local Application Engineering
representative.
2.11 XCM25D Electronic controller – Programming
CAUTION
Low refrigerant charge! Compressor damage! Never energize the
unit/controller without minimum refrigerant system charge. There is a risk of
malfunction of the controller in deep vacuum operation which can cause
compressor damage.
2.11.1 Programming the local display
Figure 9: Local display
LED
Mode
Function
On
Compressor 1 enabled
Flashing
Anti-short cycle delay enabled
On
Condensing fans enabled
On
Bar display
Flashing
Programming mode
On
PSI display
Flashing
Programming mode
On
When browsing the service menu
Flashing
In fast access menu
On
When browsing the alarm menu
Flashing
A new alarm occurred
On
An alarm is occurring
On
Digital unloader solenoid On
On
In defrost
Table 10: LED functions description
NOTE: By default, the local display will show the value of the suction pressure during
operation. This can be changed by choosing another value for parameter B03/Lod (Remote
Display visualization).
C6.1.10/0118-0318/E 13
Setting for
B03/Lod
Value shown on the display
Comments
0
P1 value = Suction pressure
1
P2 value = Mid-coil temperature (condenser)
2
P3 value = Discharge line temperature
3
P4 value = Vapour inlet EVI
Not applicable
4
P5 value = Vapour outlet EVI
Not applicable
5
P6 value = Ambient temperature
6
P7 value = Not used in factory setting
7
PEr value = Probe error
8
Aou value = Analog output
Table 11: Display visualisation
2.11.2 Remote display CCM60
The remote display CCM60 allows for remote monitoring and control of the XCM25D controller via
cable. This device has the same interface as the unit controller therefore the commands and
symbols are identical to those of the XCM25D controller. The remote display shall be mounted on
a vertical panel, in a 29 x 71 mm hole, and secured using the special bracket supplied (see
Figure 10).
The temperature range allowed for correct operation is 0°C to +60°C.
Avoid places subject to strong vibrations, corrosive gases, excessive dirt or humidity. Allow for air
to circulate through the cooling holes.
When front-mounted, the remote display is IP65 rated.
Figure 10: Remote display front panel mounting
The remote display is a proprietary bus of communication for Dixell HMI (x-rep, CCM60) interfaces.
There are two connection terminals on the back of the remote display (+ and -).
NOTE: Emerson recommends using a shielded cable twisted pair 2 x 0.5mm².
The device must be connected to the VNR-terminal on the unit controller according to the polarity.
Figure 11 shows the VNR terminal on the unit controller.
Figure 11: VNR connection for the remote display
VNR connection for remote display
Safety
instructions
Product
description
Installation
Starting up &
operation
Maintenance &
repair
Certification &
approval
Dismantling &
disposal
14 C6.1.10/0118-0318/E
Before connecting cables make sure the power supply complies with the hardware requirements.
Separate the terminal cables from the power supply cables, the outputs and the power
connections.
2.11.3 Single commands
Press the SET button to display the target setpoint. In programming mode, this
allows to select a parameter or to confirm an operation.
Press the RESET button and hold for 5 seconds to reset any lockouts if the
current state of the controller allows for it to be reset.
(UP) To view the fast access menu. In programming mode, this browses the
parameter codes or increases the displayed value.
(DOWN) In programming mode, this browses the parameter codes or decreases
the displayed value.
(SERVICE) To enter the service and alarm menu.
Hold for 3 seconds to start a manual defrost or terminate an active defrost.
Table 12: Single commands
2.11.4 Double commands – Entering programming level 1 "Pr1"
Press simultaneously for about 3 seconds to lock (PoF) or unlock (Pon) the
keyboard.
Press simultaneously to leave the programming mode or menu. On submenus
rtC and EEV this combination allows to go back to the previous level.
Press simultaneously for about 3 seconds to access the first level of
programming mode.
Table 13: Double commands
The device provides 2 programming levels:
▪ Pr1 with direct access
▪ Pr2 protected with a password (intended for experts)
2.11.5 How to program the parameters (Pr1 and Pr2)
Access pre-
program level
Press simultaneously for about 3 seconds to access the preprogramming level. The message rtC (real-time clock) appears.
Access
program level
or
Press the Up or Down key until the message Par appears.
Access Pr1
Press the SET button to enter the program level. First parameter
appears.
Select item
or
Select the parameter or submenu using the arrows.
Show value
Press the SET button.
Modify
or
Use the arrows to modify the value.
Confirm and
store
Press the SET button: the value will blink for 3 seconds, then the
display will show the next parameter.
EXIT
Press simultaneously to exit the programming mode, or wait
for 30 seconds (MTO) without pressing any key.
Table 14: Programming level 1 parameters
When entering the programming level for the first time the display will show the rtC (real-time
clock) label.
▪ Press to access parameters N01/02/03/04/05 (Min/Hr/MdY/Mon/YEr) to adjust time &
date. For further details, see Chapter 2.13, "Parameters level 1 – Required settings".
▪ Press or to change from the rtC label to the Par label, in order to access
programming level 1.
▪ Press : the parameters of programming level 1 can be changed.
C6.1.10/0118-0318/E 15
2.11.6 Entering programming level 2 "Pr2"
To enter the Pr2 programming menu:
▪ Press simultaneously for 3 seconds. The first parameter label will be displayed.
▪ Press till the T18 label is displayed, then press the key;
▪ The blinking PaS label will be displayed; wait for a few seconds;
▪ The display will show "0 - -" with blinking 0: insert the password [321] using the and
keys and confirming with the key.
2.11.7 Fast access menu
This menu contains the list of probes and some values that are automatically evaluated by the
board such as the superheat and the percentage of valve opening. nP or noP stands for "probe
not present" or "value not evaluated", Err means "value out of range", "probe damaged, not
connected or incorrectly configured".
Entering fast access
menu
Press and release the UP arrow. The duration of the
menu in case of inactivity is 3 minutes.
The values that will be displayed depend on the
configuration of the board.
Use the
or
arrow to select
an entry, then
press
to see the value
or to go on with
another value.
▪ P1P: Pressure value of the P1 probe (suction pressure)
▪ P2t: Temperature value of the P2 probe (not valid)
▪ P2P: Pressure value of the P2 probe (discharge pressure)
▪ P3t: Temperature value of the P3 probe (discharge line
temperature)
▪ P4t: Temperature value of the P4 probe (not applicable)
▪ P5t: Temperature value of the P5 probe (not applicable)
▪ P6t: Temperature value of the P6 probe (ambient temperature)
▪ P7t: Temperature value of the P7 probe (free)
▪ SH: Value of superheat. nA = not available
▪ oPP: Percentage of step valve opening.
▪ SEtd: Value of the dynamic setpoint (condenser fan SET). This
information is available only if the dynamic setpoint function is
enabled.
▪ AOO: Percentage of the analog output (0-10V or TRIAC PWM
Mod.). This information is available only if the 0-10V or TRIAC PWM
Mod. is enabled.
▪ dStO: Percentage of the PWM output driving the valve of the Digital
Scroll compressor.
▪ L°t: Minimum room temperature.
▪ H°t: Maximum room temperature.
▪ HM: Menu.
▪ tU1: Voltage reading V1 (not valid in standard configuration)
▪ tU2: Voltage reading V2 (not valid in standard configuration)
▪ tU3: Voltage reading V3 (not valid in standard configuration)
▪ tA1: Current reading I1
▪ tA2: Current reading I2
Exit
Press simultaneously or wait for the timeout of about
60 seconds
Table 15: Fast access menu
2.12 Controller keyboard
2.12.1 How to lock the keyboard
Keep the and keys pressed simultaneously for more than 3 seconds. The "PoF" message
will be displayed and the keyboard will be locked. At this point it is only possible to see the setpoint
or the maximum or minimum temperatures stored. If a key is pressed for more than 3 seconds,
the "PoF" message will be displayed.
Safety
instructions
Product
description
Installation
Starting up &
operation
Maintenance &
repair
Certification &
approval
Dismantling &
disposal
16 C6.1.10/0118-0318/E
2.12.2 How to unlock the keyboard
Keep the and keys pressed simultaneously for more than 3 seconds, till the "Pon"
message is displayed.
2.13 Parameters level 1 – Required settings
The XCM25D is preconfigured to reduce the required settings on job-site to a minimum. In most
cases it will not be necessary to enter programming level 2 "Pr2". Table 16 gives an overview of
the parameters available in programming level 1 "Pr1".
NOTE: When changing parameter C05 (LS) a reset of the controller (interruption of power
supply) is required.
Parameters
Description
Unit
Factory
setting
Comments
ZXDE
ZXDI
C07
rEF
Refrigerant selection for
regulation
[-]
R404A
R134a, R404A, R407A,
R407F, R448A, R449A,
R450A, R513A
C16
StC
Digital compressor
setpoint
[bar]
3.3
C17
Pbd
Proportional band for
compressor regulation
[bar]
2.0
C21
tdG
Cycle time for digital
compressor
[sec]
10
C24
PMi
Minimum capacity for
digital compressor
[%]
20
C25
PMA
Maximum capacity for
digital compressor
[%]
100
D29
LPA
Low-pressure alarm value
[bar]
0.5
E39
FSP
Condenser setpoint
[°C]
35.0
E46
Fbd
Regulation band of
variable fan
[°C]
10.0
N01
Min
Current minute
[-]
[-]
N02
Hr
Current hour
[-]
[-]
N03
MdY
Day of the month
[-]
[-]
N04
Mon
Month
[-]
[-]
N05
YEr
Year
[-]
[-]
T18
PAS
Access to Pr2 level
[-]
[-]
Password: 3 2 1
Table 16: Parameters in programming level Pr1
NOTE: The full list of parameters in programming level "Pr2" can be found in Appendix 4.
2.14 Digital operation
A Digital unit is able to operate in a part-load mode. Part-load operation is achieved by loading
and unloading of the Digital scroll compressor for certain periods of time (time cycles). The cycle
of time can be chosen between 10 and 30 seconds. Example: if the time cycle is 20 seconds at
50% of capacity request, the compressor will run for 10 seconds loaded and 10 seconds unloaded.
The regulation starts when the suction pressure (AI1) increases and reaches the value
(SP-PB/2+(PB*PMI)/100) or (StC-Pbd/2+(Pbd*PMi)/100). Within the adjustment range
(SP-PB/2~SP+PB/2) or (StC-Pbd/2 ~ StC+Pbd/2) the Digital scroll compressor is activated in
PWM mode in accordance with the value of the control variable.
When the pressure is higher than (SP+PB/2) or (StC+Pbd/2) then the TRIAC output is at
maximum capacity. When the pressure is lower than (SP+PB/2) or (StC+Pbd/2) but higher than
(SP-PB/2) the Digital Scroll compressor modulates the capacity according to the proportional
band. If the pressure is lower than (SP-PB/2)/ (StC-Pbd/2) the Digital Scroll compressor switches
off.
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