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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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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Condensing Unit Controller EC2-5X1
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Parameter
t Time Parameters Min Max Unit Def Min Max Unit Def
t11) Time delay before adding capacity 0 99 10sec 3 0 99 10sec 3
t21) Time delay before removing capacity 0 99 10sec 3 0 99 10sec 3
t31) Compressor minimum on time 0 99 10sec 6 0 99 10sec 6
t41) Compressor minimum off time 0 99 10sec 6 0 99 10sec 6
t5 Maximum compressor switching 0 199 1/hr 0 0 199 1/hr 0
Parameter
A Alarm Parameters Min Max Unit Def Min Max Unit Def
A2 Minimum suction pressure alarm limit -1.0 50.0 bar(g) 0.0 -1.0 50.0 bar(g) 0.0
A3 Maximum suction pressure alarm limit -1.0 50.0 bar(g) 50.0 -1.0 50.0 bar(g) 50.0
A41) Delay time for minimum pressure alarm limit 0 99 10sec 0 0 99 10sec 0
A51) Delay time for maximum pressure alarm limit 0 99 10sec 0 0 99 10sec 0
A6 High discharge temperature cut-out
(cut-in = cut out -10°C) ----100140°C130
A81) Compressor serial alarm delay 0 99 10sec 0 0 99 10sec 0
A92) Compressor run limit before Maintenance 0 99 10k Hr 0 0 99 10k Hr 0
EC2-511 EC2-551
EC2-511 EC2-551
1) Value shown in display is 10 times lower
2) These values have a resolution of 10.000 hours, on the local display. Example: value 1
means 10.000 hours.
A2: Minimum limit for suction pressure alarm – Value will be fixed on same value than the
mechanical LP safety switch
A3: Maximum limit for suction pressure alarm – Inactive by default
If this function is active and the suction pressure is above the maximum value A3, an hP1
alarm signal will appear, followed by the measured pressure value. It is important to know
that the alarm signal will stay until temperature decreases and suction pressure stabilises
below maximum value A3.
A6: High discharge temperature cut-out for Digital Scroll compressor only – fixed at
130°C
Parameter
u Step enable Parameters Min Max Unit Def Min Max Unit Def
u0 Reset operating time 0 3 - 0 0 3 - 0
u1 Enable/disable compressor 1 0 1 flag 1 0 1 flag 1
u2 Enable/disable compressor 2 0 1 flag 1 0 1 flag 1
EC2-511 EC2-551
u0 Compressor reset operating time
0 = do nothing
1 = reset operating time compressor 1
2 = reset operating time compressor 2
3 = reset operating time all compressors
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Condensing Unit Controller EC2-5X1
Parameter
c Application Parameters Min Max Unit Def Min Max Unit Def
c1 Number of compressors 1 2 - 2 1 2 - 2
c3 Control mode (network system) 2 3 - 2 2 3 - 2
c4 Compressor 1 control mode 0 1 - 0 0 2 - 0
c5 Compressor switch logic 0 1 flag 1 0 1 flag 1
c6 Number of compressor to switch on in case of sensor
failure 02-002-0
EC2-511 EC2-551
c1 Number of compressors
This default parameter is set to 2 for two-compressor Copeland EazyCool™ condensing
units.
For single-compressor Copeland EazyCool™ condensing units with Copeland Digital
Scroll™, c1 should be changed to 1.
c3 Control mode
This parameter is not active for stand alone units, it only applies to units used in
refrigeration networks.
c4 Compressor 1 control mode
0 = compressor 1 in standard control loop
1 = compressor 1 act as base load compressor
2 = compressor 1 act as modulating (PWM control for Copeland Digital Scroll™
compressor only - not in use for EC2-511)
c5 Compressor switch logic
0 = FILO logic (FILO = First In, Last Out)
 Capacity demand: adds first compressor out of available compressors.
(available compressors: compressors where min off time (t3) is fulfilled)
 Capacity excess: removes last compressor out of available compressors.
(available compressors: compressors where min on time (t4) is fulfilled)
1 = Rotation enabled, FIFO logic (FIFO = First In, First Out)
 Capacity demand: adds compressor with lowest runtime out of available
compressors.
(available compressors: compressors where min off time (t3) is fulfilled)
 Capacity excess: removes compressor with highest runtimes out of available
compressors.
(available compressors: compressors where min on time (t4) is fulfilled)
c6 Number of compressor to switch on in case of sensor failure
Compressor(s) will be switched on and run only. Suction pressure control by LP switch,
system protected by the mechanical safety devices (HP & LP switches).
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EnglishFrenchGerman
Parameter
r Sensor Parameters Min Max Unit Def Min Max Unit Def
r0 Suction pressure sensor min. value -1.0 50.0 bar -0.8 -1.0 50.0 bar -0.8
r1 Suction pressure sensor max. value -1.0 50.0 bar 7.0 -1.0 50.0 bar 7.0
r2 Pressure offset for suction pressure -1.0 1.0 bar 0.0 -1.0 1.0 bar 0.0
r3 Refrigerant type 0 5 - 4 0 5 - 4
EC2-511 EC2-551
r0 & r1 parameters setting value depends of the refrigerant choice “r3”.
r3 is set as default for R404A.
r3 Refrigerant
0 = no temperature conversion
1 = R22
2 = R134a (not possible for units including Copeland Digital Scroll compressors)
3 = R507
4 = R404A
5 = R407C (not possible for units including Copeland Digital Scroll compressors)
NOTE: R134a cannot be used for Copeland EazyCool™ condensing units with two
compressors, as LP and HP switch are not set for R134a.
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Condensing Unit Controller EC2-5X1
Parameter
F Modulating Parameters Min Max Unit Def Min Max Unit Def
F2Minimumoutputvalue ----10.0100.0 % 20.0
F3Maximumoutputvalue ----10.0100.0 % 100.0
F6PWMrate(DigitalScrollcompressor) ----1020sec20
EC2-511 EC2-551
Modulation range of Copeland Digital Scroll compressor:
 F2 will set minimum capacity of Copeland Digital Scroll compressor
Minimum capacity: F2 => 10%
With a two compressor unit, a small capacity step occurs when the second
compressor starts: capacity when second compressors starts= 50% (fixed
capacity compressor) + F2/2 Digital Scroll compressor capacity
 F3 will set max capacity: with F3 = 80%, compressor will pump during max 80%
of the 20 sec cycle, so max 16 seconds.
Modulation parameter
PWM Cycle - Modulation cycle
F2 = 20% Ì4 sec
F3 = 100% Ì16 sec
04 10
PWM Cycle in sec
Load Sequence
Unload Sequence
Modulation parameter
PWM Cycle - Modulation cycle
F2 = 20% Ì4 sec
F3 = 100% Ì16 sec
2004 10 2004 10
PWM Cycle in sec
Load Sequence
Unload Sequence
20
F6: The Pulse Width Modulated signal (PWM signal) is the modulation period of a
Copeland Digital Scroll compressor which can be adjusted from 10 to 20 seconds to
ensure the closest modulation time period.
Digital running only
Digital
Digital
TotalOutput
Fixed
Capacity
# comp
9.4
19.8
Capacity (kW)
Digital & Fixed runningDigital running only
Digital
Digital
TotalOutput
Fixed
Capacity
# comp
9.4
19.8
Capacity (kW)
Digital & Fixed running
Digital
Digital
TotalOutput
Fixed
Capacity
# comp
9.4
19.8
Capacity (kW)
Digital running only Digital & Fixed running
Digital
Digital
TotalOutput
Fixed
Capacity
# comp
9.4
19.8
Capacity (kW)
Digital running only Digital & Fixed running
Example OMTQ-90D
1 Digital Comp with F2 = 20% & F3 = 100%
1 fixed capacity comp
Example OMTQ-90D
1 Digital Comp with F2 = 10% & F3 = 100%
1 fixed capacity comp
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Condensing Unit Controller EC2-5X1
EnglishFrenchGerman
6.2 Controller 2 (Fan controller)
Two compressor Copeland EazyCool™ condensing units without fan speed controller are
equipped with EC2-511, controller 2 is switching fan “ON/OFF”.
Two compressor Copeland EazyCool™ condensing units with fan speed controller
(option) as well as a two compressor Copeland EazyCool™ condensing units including a
Copeland Digital Scroll™ compressor are equipped with EC2-551, controller 2 is
modulating fan(s) speed.
Parameter
P Set Point Parameters Min Max Unit Def Min Max Unit Def
P0 Pressure set-point (condensing) for fan circuit -1.0 50.0 bar(g) 14.0 -1.0 50.0 bar(g) 14.0
P1 Pressure band (control band for P/PI, dead band for
control mode) 0.0 50.0 bar 4.0 0.0 50.0 bar 4.0
P3Fastrecoveryfromlowpressure -9.950.0bar(g)-9.9----
EC2-511 EC2-551
P0: Set point for fan modulation
P1: Dead band default setting point is 4 bar.
Parameter
t Time Parameters Min Max Unit Def Min Max Unit Def
t11) Time delay before adding fan(s) 0 99 10sec 3 ----
t21) Timedelaybeforeremovingfan(s) 09910sec3----
Parameter
A Alarm Parameters Min Max Unit Def Min Max Unit Def
A2 Minimum condensing pressure alarm limit -1.0 50.0 bar(g) 10.0 -1.0 50.0 bar(g) 10.0
A3 Maximum condensing pressure alarm limit -1.0 50.0 bar(g) 27.0 -1.0 50.0 bar(g) 27.0
A41) Delay time for minimum pressure alarm limit 0 990 10sec 0 0 990 10sec 0
A51) Delay time for maximum pressure alarm limit 0 990 10sec 0 0 990 10sec 0
A81) Fan serial alarm delay 0 990 10sec 0 0 990 10sec 0
A92) Fan run limit 0 990 k Hr 0 0 990 k Hr 0
EC2-551
EC2-511 EC2-551
EC2-511
1) Value shown in display is 10 times lower
2) These values have a resolution of 10.000 hours, on the local display. Example: value 1
means 10.000 hours.
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Condensing Unit Controller EC2-5X1
Parameter
u Step enable Parameters Min Max Unit Def Min Max Unit Def
u0 Reset operating time 0 1 - 0 0 1 - 0
u1 Enable/disable fan1 0 1 flag 1 0 1 flag 1
u2Enable/disablefan2 01flag1----
EC2-511 EC2-551
u0 Fan Reset operating time
0 = do nothing
1 = reset operating time fan 1
2 = reset operating time fan 2
u1 & u2 Enable/Disable fan
Disconnect one of the two fans in case of fan break-down
Parameter
c Application Parameters Min Max Unit Def Min Max Unit Def
c1Numberoffans 12-2----
c3 Control mode (dead band) 2 2 - 2 ----
c5Fanswitchlogic(Rotation) 01flag1----
c6 Number of fans to switch on in case of sensor failure 0 2 - 0 0 1 - 0
Parameter
r Sensor Parameters Min Max Unit Def Min Max Unit Def
r0 Condensing pressure sensor min. value -1.0 50.0 bar 0.0 -1.0 50.0 bar 0.0
r1 Condensing pressure sensor max. value -1.0 50.0 bar 30.0 -1.0 50.0 bar 30.0
r2 Pressure offset for condensing pressure -1 1 bar 0 -1 1 bar 0
Parameter
H Other Parameters Min Max Unit Def Min Max Unit Def
H2 Keyboard and IR Remote Control 0 3 - 3 0 3 - 3
H3 IR Remote control access code 0 199 - 0 0 199 - 0
H5 Password 0 199 - 12 0 199 - 12
Parameter
F Modulating Parameters Min Max Unit Def Min Max Unit Def
F2Minimumoutputvalue ----0.0100.0 % 0.0
F3Maximumoutputvalue ----0.0100.0 % 100.0
EC2-511 EC2-551
EC2-511 EC2-551
EC2-511 EC2-551
EC2-511 EC2-551
H2 Keyboard and IR remote control
0 = all disabled (Caution, access to controller only via LON network possible)
1 = Keyboard enabled
2 = IR remote control enabled
3 = Keyboard and IR remote control enabled
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6.3 Important parameters on EC2-551 to configure according to Copeland
EazyCool™ model
6.3.1 EC2-551 for Copeland EazyCool™ condensing unit with two
compressors with fan speed controller FSP150
Major parameters for operation
Parameter
c Application Parameters Min Max Unit Def
c1 Number of compressors 1 2 - 2
c3 Control mode (network system) 2 3 - 2
c4 Compressor 1 control mode 0 2 flag 0
c5 Compressor switch logic 0 1 flag 1
c6 Number of compressor to switch on in case of sensor
failure 02-0
EC2-551
c4 Compressor 1 control mode
0 = compressor 1 in standard control loop
1 = compressor 1 act as base load compressor
2 = compressor 1 act as modulating (PWM control for Copeland Digital Scroll™
compressor only)
NOTE: c4 parameter should be either 0 or 1
6.3.2 EC2-551 for Copeland EazyCool™ condensing unit with Copeland
Digital Scroll compressor
Major parameters for operation
Parameter
c Application Parameters Min Max Unit Def
c1 Number of compressors 1 2 - 2
c3 Control mode (network system) 2 3 - 2
c4 Compressor 1 control mode 0 2 flag 2
c5 Compressor switch logic 0 1 flag 1
c6 Number of compressor to switch on in case of sensor
failure 02-0
EC2-551
c4 Compressor 1 control mode
0 = compressor 1 in standard control loop
1 = compressor 1 act as base load compressor
2 = compressor 1 act as modulating (PWM control for Copeland Digital Scroll™
compressor only)
NOTE: For a digital condensing unit c4 should only be fixed on “2”
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Condensing Unit Controller EC2-5X1
Parameter
F Modulating Parameters Min Max Unit Def
F2 Minimum output value 10 100 % 20
F3 Maximum output value 10 100 % 100
EC2-551
Minimum & Maximum output value could be adjusted
In case of a single compressor Copeland EazyCool™ condensing unit with a Copeland
Digital Scroll compressor, the maximum output could be set below 100% if system
requests less than the maximum capacity. In that case F3 > F2.
7 Alarms and Messages
7.1 Alarm codes
hP High pressure alarm signal flashing before indicating the actual pressure value of the
system
 Controller 1: suction pressure higher than the maximum limit A3 (inactive by
default)
 Controller 2: condensing pressure higher than the maximum limit A3
Alarm during the pull down period in case A3 is fixed around 6 bar:
During the pull down period, alarm hP1 will be flashing until the condensing unit
reaches a value below the A3 set-point (by default 6 bar).
Pull down curve
0
2
4
6
8
10
12
t=0 t=1 t=2 t=3 t=4 t=5 t=6 t=7 t=8 t=9 t=10 t=11
P0 - (P1)/2)
P0 + (P1)/2)
P0: Modulation set-point (suction pressure)
A2: Min. suction pressure Iimit (alarm)
A3: Max. suction pressure Iimit (alarm)
If A3 is fixed at 6 bar, hP1 alarm
will flash until suction pressure
reaches a value below A3
18 Part no: 3125495 C6.1.3/0505-0705/E

Condensing Unit Controller EC2-5X1
EnglishFrenchGerman
lP Low pressure alarm signal flashing before indicating the actual pressure value of the
system
 Controller 1: suction pressure lower than the minimum limit A2 (0 bar by default)
 Controller 2: condensing pressure lower than the minimum limit A2
EP Error pressure
 Controller 1: suction pressure sensor failure
 Controller 2: condensing pressure sensor failure
Fr Fast recovery alarm (if P3 active) signal flashing before indicating the actual pressure
value
 Controller 1: fast recovery from low suction pressure. Signal just before
compressor stops.
 Controller 2: fast recovery from low condensing pressure (only for EC-2-511 if
active). Signal just before fan stops.
hr High discharge pressure alarm (if P8 active) signal flashing before indicating the
actual pressure value
 Controller 1: high discharge pressure recovery
Emergency run
 Controller 1: runs with c6 numbers of compressors
 Controller 2: runs with c6 numbers of fans
cE Communication error
 Controller 1: Communication error if binding for paralleling is used. A slave
controller then goes to emergency master mode and works with local pressure
sensor and set point.
d1 Discharge temperature alarm
 Digital Scroll compressor only: Discharge end temperature is too high –
compressor stop.
E1 Feedback alarm 1 – safety loop failure of compressor 1 (safety loop, HP or LP
pressure switches, or oil level control)
 Controller 1: digital input associated with compressor 1 has changed into alarm
state (safety chain)
E2 Feedback alarm 2 – safety loop failure of compressor 2 (safety loop, HP or LP
pressure switches, or oil level control)
n1 Service alarm 1
 Controller 1: compressor 1 operating time higher than service limit
 Controller 2: fan 1 operating time higher than service limit
n2 Service alarm 2
 Controller 1: compressor 2 operating time higher than service limit
 Controller 2: fan 2 operating time higher than service limit
Er Data error
 Data send to the display is out of range
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Condensing Unit Controller EC2-5X1
7.2 Messages
In Configuration data initialisation
 The display will show an “In” when the configuration data are initialised with the
factory default values.
Id Wink request received
 The display will show a flashing “Id” when the wink request was received. The
node will receive the flashing “Id” will be shown on the display until the service
button will be pressed, or a 30 min delay timer will expire or a second wink
request. (NEURON ID)
oF Offline
 The node is offline: no application is running. This is the result of a network
management command.
- -- --- Controller disabled, waiting for restart
 After a major change of the configuration parameter, the compressor capacity
controller and the condenser fan controller are disabled for 20 seconds. After this
delay the controllers restart automatically.
 The compressor controller and the condenser controller are disabled.
20 Part no: 3125495 C6.1.3/0505-0705/E