EC3-932_65149_EN_R02.doc Replacement for R01 1 / 4 PCN: 865 874 22.09.2009
EC3-932 Rack and Condenser Controller and ECD-000 Display Unit
Operating Instructions
GB
Note: This document contains short form instructions for experienced users.
Use last column in List of Parameters to document your individual settlings.
More detailed information can be found in the User Manual.
The EC3-932 is a digital controller for racks and condensers in commercial
refrigeration applications for controlling up to 4 compressors with conventional
on/off step control working on a common suction line. Alternatively, the controller
may be configured to control a Copeland Digital Scroll compressor and up to 3
single stage compressors. The condenser control may consist of up to 3 cycled
fans. The first fan can be continuously speed controlled directly with the onboard
TRIAC. The fan power supply must be connected to the TRIAC. To meet the EMC
compliancy in this case, an external filter must be fitted. For the rack controller, the
control target is to maintain the suction pressure (3) at a defined value by varying
the available compressor capacity (12).
The control target for the condenser controller is to maintain the condensing
pressure (4) at a defined value by varying the available fans (13). For the
measurement of the suction pressure and the condensing pressure, two PT pressure
sensors with a 4 – 20 mA interface can be connected to the controller. The
controller has four relays outputs to command the compressors (12), the fans (13)
and the heat recovery solenoid (15). Eight digital inputs for 24V AC/DC or 230V
AC and four digital inputs for 24V AC/DC are available, four for compressor serial
alarm (5), three for the fan serial alarm (10), one for low pressure alarm (6), one for
high pressure alarm (7), one for oil level alarm (8), one for refrigerant level alarm
(9) and one for heat recovery demand (11). To control the discharge end
temperature of compressors, four temperature inputs (1) are available. If a Digital
Scroll is installed (16) it should be connected to relay “comp 1” and the
corresponding temp. sensor to “disch 1”. Alternatively, two analogue outputs
0 to 10 V are available to control the first compressor or the first fan are inverter
driven (14).
The optional ECD-000 Display Unit can be connected to the EC3-932 for local
display of control parameters and for controller setup without the use of a PC.
Because the EC3-932 is fully functional without display unit the ECD-000 may be
removed at any time.
!
Safety instructions:
• Read installation instructions thoroughly. Failure to comply can result in
device failure, system damage or personal injury.
• The product is intended for use by persons having the appropriate
knowledge and skills.
• Ensure electrical ratings per technical data are not exceeded.
• Disconnect all voltages from system before installation.
• Keep temperatures within nominal limits.
• Comply with local electrical regulations when wiring
Technical Data
EC3 Series Controller
Power supply 24VAC ±10%; 0,5A; 50/60Hz; Class II
6.3mm spade earth connector
Power consumption 20VA max.
Communication TCP/IP Ethernet 10MBit/s
Plug-in connector size Removable screw terminals
wire size 0.14 … 1.5 mm
2
Temperature storage
operating
-20 … +65°C
0 … +60°C
Humidity 0…80% r.h. non condensing
Protection class IP20
Pressure transmitter inputs 24VDC, 4...20mA
Temp. ambient (2)
Temp 1: for Digital Scroll
(Dynamic based on settings)
NTC 10 kΩ @ 25°C, -50 … +50°C
NTC 86 kΩ @ 25°C -40 to +180°C
Applies if C4= 2 & F5= 2
Temp. 2, 3&4 input discharge
1 MΩ @ 25°C, +50 … +150°C
Digital Inputs 24VAC/DC or 230VAC
Compressor output relays Inductive (AC15) 250V/2A
(4x) + General alarm output Resistive (AC1) 250V/8A
Digital scroll output
!
Semi-conductor switch, 24 … 230 VAC
The coil must be rated for the voltage applied
to the input
ECD-000 Display Unit
Power Supply from EC3 via connecting cable
Display 2½-digit red LED with decimal point
reversible between °C and °F
LED indicators Controller 1, Controller 2, p bar, Alarm, IR status
Temp & Humidity Identical to EC3 specifications above
Protection class IP65 (front protection with gasket)
Connecting cable ECC-N10 (1m), ECC-N30 (3m), ECC-N50 (5m) or
CAT5 cable with RJ45 connectors
Marking EC3/ECD:
Mounting
The EC3 can be mounted onto a standard DIN rail.
The ECD-000 can be mounted in panels
with a 71x29 mm cutout. See dimensional
drawing below for space requirements
including rear connectors.
Push controller into panel cutout. (1)
Make sure that mounting lugs are flush with
outside of controller housing
Insert allen key into front panel holes and
turn clockwise. Mounting lugs will turn and
gradually move towards panel (2)
Turn allen key until mounting lug barely
touches panel. Then move other mounting
lug to the same position (3)
Tighten both sides very carefully until
display is secured. Do not over tighten as
mounting lugs will break easily.
EC3-932_65149_EN_R02.doc Replacement for R01 2 / 4 PCN: 865 874 22.09.2009
EC3-932 Rack and Condenser Controller and ECD-000 Display Unit
Operating Instructions
GB
Electrical Installation
Refer to the electrical wiring diagram (below) for electrical connections. A copy of
this diagram is labeled on the controller. Use connection wires/cables suitable for
90°C operation (EN 60730-1). Ground the metal housing with a 6.3mm spade
connector.
Important: Keep controller and sensor wiring well separated from mains wiring.
Minimum recommended distance 30mm..
Warning: Use a class II category transformer for 24VAC power supply
(EN 60742). Do not ground the 24VAC lines. We recommend to use one
transformer per EC3 controller and to use separate transformers for 3
rd
party
controllers, to avoid possible interference or grounding problems in the power
supply. Connecting any EC3 inputs to mains voltage will permanently damage the
EC3.
Setup and Parameter Modification Using the Keypad of the
ECD-000
For convenience, an infrared receiver for the optional IR remote control unit is
build-in, enabling quick and easy modification of the system parameters when a
computer interface is not available.
Alternatively, the parameters can be accessed via the 4-button keypad. The
configuration parameters are protected by a numerical password. The default
password is “12”. To select the parameter configuration:
• Press the PRG button for more than 5 seconds
A flashing 0 is displayed
• Press or until 12 is displayed; (password)
• Press SEL to confirm password
The first modifiable parameter code is displayed (/1).
To modify parameters see Parameters modification below.
Parameter Modification: Procedure
• 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 temporarily confirm the new value and display its code;
• Repeat the procedure from the beginning "press or to show..."
To exit and save the new settings:
• Press PRG to confirm the new values and exit the parameters modification
procedure.
To exit without modifying any parameter:
• Do not press any button for at least 60 seconds (TIME OUT).
• Press “ESC” on IR remote control.
Special Functions:
The Clear Alarm function has been replaced by the Special Functions mode. The
Special Functions can be activated by:
• 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.
• Press SEL to confirm password
A 0 is displayed and the Special Function mode is activated.
• Press or to select the function. The number of special functions is dynamic
and controller dependent. See list below.
• Press SEL to activate the function without leaving 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 after exiting the special
function mode.
• 0: Display test function
• 1: Displays the current TCP/IP address
• 2: Set the controller's TCP/IP address to 192.168.1.101 (default value). This
change is only temporary. A power down will reset the previous address.
• 3: Resets all parameters to the factory default setting. The controller will
indicate “oF” during the reset.
Display of Data:
The data to be permanently shown on the display can be selected by the user (parameter
/1). In case of an alarm, the alarm code is displayed alternately with the selected data.
The user can inhibit the alarm code.
It is possible to temporarily display these values. This is a useful feature when
initially setting-up the system without the aid of the WebPages. Press the SEL
button to scroll through all possible displayable data. The display will show for one
second the numerical identifier of the data (see /1 parameter) and then the selected data.
After two minutes the display will return to the by parameter /1 selected data. This
action is only valid when parameter H2 = 3
IR Status
Compressor 4 On
Controller 1 LED
Service LED
Controller 2 LED
Pressure LED
Alarm LED
Compressor 3 On
Compressor 2 On
Compressor 1 On
Fan 1
Fan 2
Fan 3
Wiring Diagram (controller label)
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