Copeland EazyCool EC2-5X1 Instruction Manual

Copeland EazyCoolTM
outdoor condensing units
Application Guidelines
Controller EC2-5X1

Application Guideline: Copeland EazyCoolTM outdoor condensing unit controller EC2-5X1
1Safety Instructions.....................................................................................................3
1.1 ICON EXPLANATION ..................................................................................................3
1.2 SAFETY STATEMENTS ............................................................................................... 3
2Product Description ..................................................................................................4
2.1 EC2-5X1 NOMENCLATURE.......................................................................................4
2.2 EC2-511 CONDENSING UNIT CONTROLLER...............................................................5
2.3 EC2-551 CONDENSING UNIT CONTROLLER...............................................................6
3Display........................................................................................................................7
3.1 NEURON ID / SERVICE BUTTON ................................................................................7
3.2 LOAD DEFAULT PARAMETERS ...................................................................................7
4Parameters .................................................................................................................8
4.1 SELECT PARAMETER CONFIGURATION........................................................................8
4.2 PARAMETER MODIFICATION ......................................................................................8
4.3 SPECIAL FUNCTIONS.................................................................................................8
5Indications on the Display ........................................................................................9
5.1 CONTROLLER 1........................................................................................................9
5.2 CONTROLLER 2........................................................................................................9
5.3 OTHER DISPLAY INDICATIONS ....................................................................................9
6List of Parameters .....................................................................................................9
6.1 CONTROLLER 1 (COMPRESSOR CAPACITY STAGING CONTROLLER)............................10
6.2 CONTROLLER 2 (FAN CONTROLLER)........................................................................15
6.3 IMPORTANT PARAMETERS ON EC2-551...................................................................17
6.3.1 EC2-551 FOR TWO-COMPRESSOR UNITS WITH FAN SPEED CONTROLLER..........17
6.3.2 EC2-551 FOR UNITS WITH COPELAND DIGITAL SCROLL COMPRESSOR.............17
7Alarms and Messages.............................................................................................18
7.1 ALARM CODES........................................................................................................18
7.2 MESSAGES.............................................................................................................20
8Technical Specifications.........................................................................................21
8.1 SAFETY STANDARD ................................................................................................21
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Condensing Unit Controller EC2-5X1
EnglishFrenchGerman
1 Safety Instructions
1.1 Icon explanation
WARNING
This Icon indicates instructions to avoid heavy personnel injuries and heavy material
damage.
High Voltage
This icon indicates operations with a danger of an electric shock.
Danger of burning or frostbite
This icon indicates operations with a danger of burning or frostbite.
Explosion Hazard
This Icon indicates operations with a danger of explosion.
CAUTION
This Icon indicates instructions to avoid property damage without or with low personnel
injuries.
IMPORTANT
This icon indicates instructions to avoid malfunction of the compressor.
NOTE this word indicates a recommendation for easier operations.
1.2 Safety statements
 Only qualified and authorised refrigeration personnel are allowed to do the
installation, commissioning and maintenance.
 Qualified electrical personnel must connect the condensing unit and its
accessories.
 All valid standards for connecting electrical and refrigeration equipment must be
observed.
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Condensing Unit Controller EC2-5X1
2 Product Description
The EC2-5X1 electronic condensing unit controller has been specially developed for the
Copeland EazyCool™ condensing unit range.
The EC2-5X1 electronic condensing unit controller is mounted as standard in the
following Copeland EazyCool™ condensing units:
 Copeland EazyCool™ stand alone two compressor condensing units: EC2-
511
 Copeland EazyCool™ stand alone Digital Scroll™ condensing units: EC2-
551o Single compressor condensing unit
o Two compressor condensing unit
 Copeland EazyCool™ condensing units for refrigeration networks: EC2-
551
The electronic controller enables:
1. Compressor modulation and/or staging based on suction pressure
2. LON (Local Operating Network) communication if connected to a PC with a
LON interface installed, monitoring of operation parameters (pressures,
temperatures as well as alarm states) becomes possible.
3. Fan speed control if an Alco Controls FSP150 fan speed driver is installed
(available as a factory fitted option).
2.1 EC2-5X1 Nomenclature
* Max. 2 compressor with on/off modulation
* Max. 2 condenser fans with on/off modulation
* Max. 2 compressors with on/off modulation, including
optional fan speed controller AlcoControls FSP150 with analog
output or
* Max. 2 compressors with one of compressors being a
Copeland Digital ScrollTM and including optional fan speed
controller AlcoControls FSP150 with analo
g
out
p
ut
5X1
X = 1: EC2-511
X = 5: EC2-551
EC2-
EC2 Platform similar to Alco Controls EC2 electronic temperature /
superheat controllers
The next pages contain a description of these controllers and the parameters that can be
changed. The controller has been pre-programmed with a number of parameter values
that are most likely correct. Individual installation requirements however may make it
necessary to alter parameter settings (e.g. suction pressure settings for compressor
capacity staging, control dead band, refrigerant parameter).
High Voltage
Attention: Before carrying out work on the condensing unit, make sure that main power
supply to the unit has been switched off!
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2.2 EC2-511 Condensing Unit Controller
Copeland EazyCool™ condensing units with 2 compressors are equipped with an EC2-
511 electronic Controller modulating compressors and fans in commercial refrigeration
applications.
In fact there are two controllers present in the EC2-511 condensing unit controller:
 1 (one) for controlling compressor capacity and,
 1 (one) for controlling condenser pressure.
The control target of the compressor controller is to maintain the suction pressure at a
defined value by varying the available compressor capacity based on the “ON/OFF” of the
compressors (EC2-511 controller).
The control target for the condenser controller is to maintain the condensing pressure at
a defined value by switching fans on/off on the Standard version (Two-compressor unit
without fan speed controller - EC2-511 Controller)
For the measurement of the suction pressure and the condensing pressure, two Alco
Controls PT4 pressure sensors with 4~20 mA interfaces are connected to the condensing
unit controller.
The controller has:
 Four relay outputs; 2 for compressor control and 2 for fan control
 Three digital inputs for Volt-free input contacts are available
o two of these are used for compressor serial alarm
o the third - available for a fan serial alarm - is provided with a link, which
should be removed, for use with an external serial alarm loop.
The display can show values with a decimal point in the range between -19.9 and +19.9
otherwise without decimal point.
An IR receiver for the optional IR remote control unit is built-in.
For communication purposes, an Echelon LONWorks® interface is provided (TP/FT-10
transceiver type).
The supply voltage is 24 V AC. A transformer for 230V main supply to 24 V AC is fitted in
the Copeland EazyCool™ condensing unit electrical panel.
EnglishFrenchGerman
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Condensing Unit Controller EC2-5X1
2.3 EC2-551 Condensing Unit Controller
The Condensing unit controller EC2-551 is fitted as standard on:
 Copeland EazyCool™ condensing units with Copeland Digital Scroll™
compressors
 Copeland EazyCool™ condensing units with two compressors and equipped with
fan speed controller module Alco Controls FSP150 (optional).
 Copeland EazyCool™ condensing units for refrigeration networks
The condensing unit may have up to two compressors (of which one can be a Copeland
Digital Scroll compressor) and 2 fans. Both fans can be fan speed controlled using a FSP
150 module (optional or fitted as standard, depending on the condensing unit model),
using the analogue output of the EC2-551.
In fact there are two controllers present in the EC2-551 controller:
 one for controlling the compressor capacity, and
 one for controlling the condenser pressure.
The control target of the compressor controller is to maintain the suction pressure at a
defined value by varying the available compressor capacity.
The control target for the condenser controller is to maintain the condensing pressure at
a defined value by varying the fan speed.
For the measurement of the suction pressure and the condensing pressure, two Alco
Controls PT4 pressure sensors with 4~20 mA interface can be connected to the
controller.
The controller has:
 relay outputs to switch the compressors
 a 0-10V output to control the fan speed
 1 Triac for modulation of the Copeland Digital Scroll compressor
 3 digital inputs for Volt-free input contacts are available:
o 2 for compressor serial alarm,
o 1 for fan serial alarm.
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Condensing Unit Controller EC2-5X1
The display can show values with a decimal point in the range between -19.9 and +19.9
otherwise without decimal point.
An IR receiver for the optional IR remote control unit is build-in.
For communication purposes, an Echelon LONWorks® interface is provided with
transceiver type FTT10A.
The supply voltage is 24 V AC. A transformer for 230V main supply to 24 V AC is fitted in
the Copeland EazyCool™ condensing unit electrical panel.
3 Display
The data to be shown on the display can be selected by the user. In case of on alarm, the
alarm code is displayed alternately with the selected data.
The data shown on the display are the compressors’ and fans’ states (default), the
suction pressure, the saturation temperature from the suction pressure, the condensing
pressure and the saturation temperature from condensing pressure.
To scroll through all possible displayable data press the SEL button. The display will
show for one second the numerical identifier of the data and then the selected data. After
2 minutes the display will return to the selected data.
3.1 Neuron ID (unique 12 digit identity number, required for LON
communication) / Service Button
Press the button for approximately 1 second to send the Neuron ID.
An LED (Service) in the left upper corner will indicate the transmission of the Neuron ID.
3.2 Load Default Parameters
By pressing the service pin key on the controller and switching on the power supply,
the EC2-551 will be reset to default parameters.
Controller 2: Fan
Value to be displayed :
 LED ON: pressure
 LED OFF: temperature
Compressor 1 :on
Fan : on
Compressor 2 :on
IR service LED
EnglishFrenchGerman
A
ctive alarm
Controller 1: Compressor
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Condensing Unit Controller EC2-5X1
4 Parameters
4.1 Select parameter configuration
The configuration parameters can be protected by a numerical password. A value of “0”
disables this protection (default password: 12). To select the parameter configuration:
 Press the PRG button for more than 5 seconds
In case of password value equal to “0”:
 The first modifiable parameter code is displayed (/1).
 To modify parameters see “Parameter modification” below.
In case of password value not equal to “0”:
 A flashing 0 is displayed
 Press or until the password value is displayed.
 Press SEL to confirm password
 The first modifiable parameter code is displayed (/1).
 To modify parameters see Parameters modification below.
4.2 Parameter Modification
 Press or to show the code of the parameter that has to be changed;
 Press SEL to display the selected parameter value;
 Press or to increase or decrease the value;
 Press SEL to temporally confirm the new value and display its code
Repeat the procedure from the beginning "press or to show..." to modify another
parameter, etc.
To exit modifying the parameters with the new values:
 Press PRG to confirm the new values and exit the parameter modification
procedure.
To exit without modifying any parameter:
 Do not press any button for at least 60 seconds (TIME OUT).
4.3 Special Functions
 Press and together for more than 5 seconds: a flashing “0” is displayed.
 Press or until the password is displayed (default = 12). If password was
changed, select the new password.
 Then press SEL to confirm password
 A “0“ is displayed and the special function mode is activated.
 Press or to select function (see list below)
 Press SEL to activate the function and don’t leave the special function mode.
 Press PRG to activate the function and leave the special function mode.
Most of the special functions work in a toggle mode, the first call activates the
function and the second call deactivates the function. The indication of the
function can only be displayed when the special function mode will be left.
0: display test function
3: resets all parameters to the default factory settings
1 & 2: not active for EC2-511 and EC2-551
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5 Indications on the Display
EC2 controller includes 2 control modules, the first is dedicated for compressor(s)
modulation (controller 1), the second is dedicated for fan(s) modulation (controller 2).
5.1 Controller 1
 Controller 1 state (compressor controller)
 Controller 1 alarm in combination with alarm message and alarm LED
 Suction pressure or saturation temperature from suction pressure
 Controller 1 parameter
5.2 Controller 2
 Controller 2 state (condenser fan controller).
 Controller 2 alarm in combination with alarm message and alarm LED
 Condensing pressure or saturation temperature from condensing pressure
 Controller 2 parameter
5.3 Other display indications
 Pressure: Pressure value in bar(g)
 Alarm: Alarm condition
 IR: IR communication enabled
 Service: Transmission of Neuron ID indicator
NOTE: Concerning the indicated parameters, it is recommended to check - before
installing - if the factory value is suitable for the required use.
6 List of Parameters
Parameter
/ Display Parameters Min Max Unit Def Min Max Unit Def
/1 Value to be shown on display 0 4 - 0 0 7 - 0
EC2-551EC2-511
/1 Value to show on display
0 = compressors and fans states (controller 1 = Compressor(s), and controller 2 = Fan(s))
1 = suction pressure (bar(g))
2 = saturation temperature from suction pressure (°C)
3 = condensing pressure (bar(g))
4 = saturation temperature from condensing pressure (°C)
5 = Digital Scroll capacity (%)
6 = Fan speed (%) Onl
y
for controller EC2-551
7 = Digital Scroll discharge temperature (°C)
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Condensing Unit Controller EC2-5X1
6.1 Controller 1 (Compressor capacity staging controller)
Parameter
P Set Point Parameters Min Max Unit Def Min Max Unit Def
P0 Pressure set-point (suction) for compressor circuit -1.0 50.0 bar(g) 3.0 -1.0 50.0 bar(g) 3.0
P1 Pressure band (control band for P/PI, dead band for
control mode) 0.0 50.0 bar 2.0 0.0 50.0 bar 2.0
P3 Fast recovery from low pressure -9.9 50.0 bar(g) -9.9 -9.9 50.0 bar(g) -9.9
P8 High discharge pressure recovery -9.9 50.0 bar(g) 50.0 -9.9 50.0 bar(g) 50.0
EC2-511 EC2-551
P0: Set point for modulation – should be fixed to the suction pressure required by
installation.
P1: Dead band default setting point should be around 2 bar in medium temperature and
should be reset to around 0.4 bar for low temperature. Dead band should be proportional
to the pressure set point (i.e.: P0 = 0.4 - P1 = 0.2 or P0 = 2 - P1= 1).
3: This is a threshold to protect compressors from running at low suction pressures.
protect the refrigeration system from running into high pressure
tive
P
When reached, all compressors are switched off instantly without obeying any delay
times (not active by default). In case of activation, set point should be above the low-
pressure switch setting.
P8: This is a threshold to
limits. When limits are reached, if all compressors are running, one of the running
compressors is switched off, if necessary without obeying of the delay times (not ac
by default). In case of activation, set point should be below the high pressure switch
setting.
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