GB EC2-292 Display Case and Coldroom Controller Technical Data

EC2-292 Display Case and Coldroom Controller

Operating Instructions

Note: This document contains short form instructions for experienced users.

Use last column in List of Parameters to document your individual settings.

More detailed information can be found in the User Manual.

Technical Data

EC2 Series Controller

Power supply

Power consumption

24VAC ±10%; 50/60 Hz; Class II

4VA max.

GB

The EC2-292 is a dedicated refrigeration controller which controls air temperature and manages defrost and fan(s).

Plug-in connector size Removable screw terminals wire size 0.14 … 1.5mm

2

Temperature

storage

operating

Humidity

Protection class

Digital inputs (2)

-20 … +65°C

0 … +60°C

0…80% r.h. non condensing

IP65 (front protection with gasket)

Volt free contacts, 5V / 0,1mA

Output relays (4) SPDT contacts, AgNi

Resistive (AC1) 250V/6A; 12A total return current

Mounting

The EC2-292 can be mounted in panels with a 71 x

29 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 controller is secured. Do not over tighten, as mounting lugs may break easily.

The ECN-Nxx or ECN-Pxx series of sensor must only be used for the air

temperature sensors (3) and (4) and are used to measure air-in and air-out temperature of the evaporator and feed signals for thermostat control. An output is used to control the refrigerant flow to the Thermo-Expansion Valve by switching a solenoid valve (6). The ECN-Fxx fin sensor (5) is used for defrost termination. The controller has relay outputs to control the solenoid valve (6) defrost heater (9) and evaporator fan (8) together with a spare output (10). Please consult the technical data (right) for input and output ratings.

Two voltage free digital inputs and a digital output can be used for different functions; see parameter list on page 3.

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)

•

•

•

•

•

•

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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

EC2-292_65138_EN_R02.doc Replacement for Rev.: 01

S1: Cleaning input. When “high”, thermostat function is off and solenoid valve relay deactivated.

S2: Door switch. When “high”, the action of the door function will correspond to the logic from parameter r0. see page 3

EC2 analog inputs are for dedicated sensors only and should not be connected to any other devices. Connecting any EC2 inputs to mains voltage will permanently damage the EC2.

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 EC2 controller and to use separate transformers for 3 rd party controllers, to avoid possible interference or grounding problems in the power supply. Connecting any EC2 inputs to mains voltage will permanently damage the

EC2.

Sensor type ECN-Nxx or ECN-Pxx should only be used for sensor inputs S3 and S4. The use of ECN-Sxx will indicate incorrect air temperatures.

1 / 4 Part No.: 862 891 26.06.2008

EC2-292 Display Case and Coldroom Controller

Operating Instructions

Recommended Sensor Positions in Detail:

(3) ECN-Nxx or ECN-Pxx air-in temperature sensor: Position in the middle of the cabinet as high as possible.

(4) ECN-Nxx or ECN-Pxx air-out temperature sensor: Position asymmetric closer to the expansion valve as high as possible.

(5) ECN-Fxx fin temperature sensor: Position on the evaporator, asymmetric closer to the expansion valve.

Both air temperature sensors should be mounted on spacers in the air duct so that there is airflow around.

Caution: The sensor cables can be extended if necessary. The connection must be protected against water and dust.

Setup and Parameter Modification Using the Keypad

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.

Defrost Activation:

A defrost cycle can be activated locally from the keypad :

• Press the button for more than 5 seconds, a flashing “0” is displayed

• Press or until “12” is displayed (password)

• Press SEL to confirm password

The defrost cycle is activated

GB

Special Functions:

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: Clear alarm messages

• 2: Cleaning mode. The cleaning mode is effectively a manual defrost with the option of the fans on/off. The cleaning mode should not be used in order to isolate the application for maintenance purposes.

• 3: Fans only

• 5: Displays the current TCP/IP address

• 6: 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

• 7: Resets all parameters to the factory default setting. The controller will indicate “oF” during the reset and the valve will close.

Display of Data:

The data to be shown on the display can be selected by the user. In case of an alarm, the alarm code is displayed alternately with the selected data. The user can inhibit the alarm code. Press the SEL button to scroll through all possible displayable data.

The display will show for one second the numerical identifier of the data and then the selected data. After two minutes the display will return to the by parameter /1 selected data.

It is possible to temporarily display the values of the different sensors. This is a useful feature when initially setting-up the system without the aid of the

WebPages. Press the SEL sequentially. The value displayed on the screen corresponds to the number corresponding to the /1 parameter. Action only valid when parameter H2 = 3.

Logical status of the “Output 1” relay

IR LED

Ethernet activity LED

(only active when service pin is pressed)

Logical status of fan relay

Logical status of defrost heater relay

Alarm condition

EC2-292_65138_EN_R02.doc Replacement for Rev.: 01 2 / 4 Part No.: 862 891 26.06.2008

EC2-292 Display Case and Coldroom Controller

Operating Instructions

List Of Parameters

Min Max Unit Def. Custom

/1 Value to show 0 7 - 0

0 = Thermostat control temperature with temperature alignment °C

(see parameter /C)

1 = Air-in temperature °C

2 = Air-out temperature °C

3 = Alarm temperature °C

4 = Defrost termination temperature °C

5 = Defrost status

6 = Digital input1 status: oF = open; on = closed circuit

7 = Digital input2 status: oF = open; on = closed circuit

/2 Alarm suppression 0 = off, 1 = on 0 1 - 0

/5 Temperature Unit 0 = °C, 1 = °F 0 1 - 0

Note: This affects only data display. All configuration parameters except /C must be entered in °C / °K

/6 Decimal point 0 = yes, 1 = no

/7 Display during defrost

/C Temperature alignment for /1=0

A ALARM PARAMETERS

0

0

1

2

-

-

0

0

0 = dF (= defrost mode); 1 = dF + defrost termination temp.

2 = dF + control temperature

-20 20 K / °F 0.0

A0 Mean factor alarm temperature 0 100 % 100

A1 Low temp alarm delay

A2 High temp alarm delay

0 180 min

0 180 min

5

5

A3 Alarm delay after defrost

Ad Door alarm delay (Ref: Input S2)

AH High temp alarm limit

AL Low temp alarm limit

0

0

AL

180

180

70 min min.

°C / K

10

2

40

-55 AH °C / K -50

At Alarm limit type 0 1 - 0

0=absolute temperatures °C; 1= relative temperatures K to setpoint r0 Door contact function (see page 4) r1 Min. setpoint r2 Setpoint max. r3 Day/night control 0 = off, 1 = on

0

- 50

15 r2 r1 60

0 1

-

°C

°C

-

6

-50

40

1 r4 Thermostat mode 0 4 - 1

0 = off, no thermostat function, continues cooling air in sensor monitoring off, no temp. alarms generated

1 = cooling, deadband control cut in = set-point + difference cut out = set-point

2 = do not use!

3 = heating, deadband control cut in = set-point – difference cut out = set-point

4 = on, external control using nviValve via SNMP. Air in and air out sensor monitoring off. Temp. alarms will be generated r6 Setpoint night r7 Differential night r8 Mean factor, day operation r9 Mean factor, night operation r1 r2 °C 4.0

0.1 20.0 K 2.0

0 100

0 100

%

%

100

50 rd Differential day

St Setpoint day

0.1 20.0 K 2.0 r1 r2 °C 2.0 d0 Defrost mode 0 2

0 = natural defrost, defrost heater not activated pulsed defrost not possible

1 = forced defrost, defrost heater activated, pulsed

- 1 defrost possible

2 = forced defrost, defrost heater activated, pulsed defrost possible, defrost termination using nviStartUp via SNMP

0 d1 Termination by:

0 = termination by temperature,

0 3 termination by time will generate an alarm

1 = termination by time,

- termination by temperature will generate an alarm

2 = first, what ever comes first time or temperature, no alarm

3 = last, by time and temperature, no alarm

GB d2 Defrost termination sensor

Min Max Unit Def. Custom

0

0 = Dedicated defrost sensor must be installed

1 = Air-out sensor used for defrost termination

1 - 1 d3 Pulsed defrost 0 1 - 0

0 = off, no pulsed defrost, heaters switched off at defrost termination temperature dt or max. time dP whatever is selected

1 = on, pulsed defrost, dd and dH in use, heaters are switched off at dH and switched on again at dH – dd d4 Defrost at startup 0 = no,1 = yes d5 Delay power up defrost d6 Pump down delay d7 Drain delay d8 Injection delay d9 Demand defrost mode

0 = off, 1 = on,

2 = on together with timed defrost

0 1 -

0 180 min

0 180 sec

0 15 min

0

0

0

2

0 180 sec 0

0 2 - 0 dd Pulsed defrost differential dH Pulsed defrost setpoint dt Defrost termination temperature dP Max defrost duration dI Defrost interval du Start up delay after synch

F FAN PARAMETERS

1 20

-40 dt

K

°C

2

5

-40 90 °C 8

0 180 min 30

0 192 h 8

0 180 min 30

F1 Fan startup by: 0 = on 0 4 -

1 = delayed by time Fd, error on temperature

2 = by temperature Ft, error on time

3 = first, whatever comes first time or temperature, no alarm

4 = last, time and temperature must come, no alarm

F2 During no cooling 0 3 -

(0 = on; 1 = off; 2 = delayed by F4; 3 = off, when door open)

F3 During defrost 0 = on, 1 = off 0 1 -

F4 Stop delay time

F5 During cleaning 0 = off, 1 = on

0

0

30

1 min

-

0

0

0

0

0

Fd Fan delay after defrost

Ft On temp after defrost

0 30 min

-40 40 °C

0

0 i0 S1 input

∩0 Functions for S1

0 = normal input

1 = cleaning

2 = only fan

3 = door contact

1 = inverse function 0

4 = permanent cooling

1 -

0 8

5 = day / night switch

-

6 = compressor safety chain

7 = defrost request

8 = defrost inhibited i1 S2 input

∩1 Functions for S2

1 = inverse function 0 see ∩0 (S1) 0

1

8

-

-

0

0

0

0 o0 Output, 1 = inverse function n0 Functions for output, 1 = alarm

H OTHER PARAMETERS

0

0

1

1

-

-

H2 Display access 0 4 - 3

0 = all disabled (Caution, access to controller only via the TCP/IP

Ethernet network possible)

1 = Keyboard enabled

2 = IR remote control enabled

3 = Keyboard and IR remote control; Temporary data display and manual defrost enabled.

4 = Keyboard and IR remote control; Temporary data display disabled. Control setpoint with SEL key and manual defrost enabled.

H3 IR access code 0 199 - 0

0

0

EC2-292_65138_EN_R02.doc Replacement for Rev.: 01 3 / 4 Part No.: 862 891 26.06.2008

EC2-292 Display Case and Coldroom Controller

Operating Instructions

GB

Remarks: r0 Door contact function.

0 = 8

1 = 9

2 = 10

3 = 11

4 = 12

6 = 14

7

13

15 on off on off on on off off off on on off off on off off on off door alarm door alarm and temperature alarm on door alarm and temperature alarm on door alarm and cooling on door alarm and cooling on and temperature alarm on

Formula for Mean Factors A0, r8, r9

Temperature calculation by the following formula:

Temperature = Air in

Examples:

* (1 - Mean Factor / 100) + Air out

* Mean Factor / 100

Mean factor = 0 Temperature = Air in

Mean factor = 100 Temperature = Air out

Mean factor = 50 Temperature = Average between Air-in and Air-out

Note: Sensor type ECN-Nxx or ECN-Pxx should only be used for sensor inputs

S3 and S4. The use of ECN-Sxx will indicate incorrect air temperatures.

Visualising Data: WebPages

A TCP/IP Controller-Readme file is available on the www.emersonclimate.com/europe website to provide detailed information about TCP/IP

Ethernet connectivity. Please refer to this file if you need information beyond the contents of this instruction sheet.

The EC2-292 has a TCP/IP Ethernet communication interface enabling the controller to be directly connected to a PC or network via the standard Ethernet port. The EC2-292 controller has embedded WebPages to enable the user to easily visualise the parameter lists using real text labels.

No special software or hardware is required.

Connect the EC2-292 using the optional ECX-N60 cable assembly to a network or hub that enables the controller to receive a dynamic TCP/IP address. If a DHCP server is not available, the controller can be connected to a computer using a crossover cable plugged directly into the Ethernet port. In this case, the TCP/IP address of the computer must be manually modified to be compatible with the default address of the controller. Refer to the TCP/IP Controller-Readme file for more details.

Open the Internet browser program on the computer and enter the default TCP/IP address of the controller into the address line of the Internet browser: 192.168.1.101 or the dynamic address from the DHCP server. The default communication port is

1030. Refer to the TCP/IP Controller-Readme file if a specific port is required.

After a few moments, the default monitoring page should be displayed. If the browser does not open the default page or display active data, the user should check the Internet browser “Option” configuration. Refer to the TCP/IP Controller-

Readme file.

Alarm Codes

E2 Air-in sensor alarm This Alarm Code is inhibited if no air-in sensor used

(A0, r8 and r9 = 100)

E3 Air-out sensor alarm This Alarm Code is inhibited if no air-out sensor used

(A0, r8 and r9 = 0) and fin sensor installed (d2 = 1)

E4 Fin sensor alarm This Alarm Code is inhibited if no fin sensor used (d2 = 0)

Explanations for E2 … E4 Alarms: No sensor connected, or the sensor and/or the sensor cable is broken or short-circuited.

Er Data error display - out of range

Data send to the display is out of range.

Ad Door open alarm

AE Thermostat in emergency operation

Air sensor failure, system is in continuous cooling mode

AH High temperature alarm

AL Low temperature alarm dt Forced defrost termination (time or temperature)

Ft Forced fan startup (time or temperature)

Messages

--- No data to display

The display will show an “---” at node start up and when no data is send to the display.

In Reset to default values activated

The display will show an “In” when the factory default configuration data set is initialized.

Id Wink request received

The display will show a flashing “Id” when the wink request was received.

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 is received.

OF Node is offline

The node is offline and no application is running. This is the result of a network management command and will happen for example during node installation. down cycle

dd Defrost drain delay

du Defrost start-up delay

Cn Cleaning

CL Alarms are cleared

IP0 IP adress received from DHCP Server

IP2 no IP adress received from DHCP Server or fixed IP adress

Emerson Electric GmbH & Co OHG is not to be held responsible for erroneous literature regarding capacities, dimensions, applications, etc. stated herein.

Products, specifications and data in this literature are subject to change without notice. The information given herein is based on technical data and tests which

ALCO CONTROLS believes to be reliable and which are in compliance with

The Monitoring and Alarm WebPages are read only and therefore it is not necessary to enter a username or password. A username and password will be requested upon the initial request to any of the other WebPages. The factory default settings are:

Username: EmersonID Password: 12

The default settings may be modified in the Display configuration page.

Press the tabs at the top of the Monitoring page with a left click of the mouse button to enter the respective Webpage.

The parameters will be visualised in real text together with the program code as defined in the parameter list below.

After the parameters have been modified, the complete list of settings can be saved to the memory of the computer and used later to upload into another controller.

This can save a considerable amount of time when using multiple controllers and over a period of time, a library can be created containing the parameter lists for equipment for different applications.

It is also possible to display live graphical data from the controller. In addition, a permanent 30 days log file containing the control temperature at 15 minutes intervals is stored in the non-volatile memory to be later transferred using FTP to the computer. The log file can be imported into a standard spreadsheet program such as Excel. Refer to the TCP/IP Controller-Readme file for a complete description of the features available for the TCP/IP series of controllers. technical knowledge of today. It is intended only for use by persons having the appropriate technical knowledge and skills, at their own discretion and risk. Since conditions of use are outside of ALCO'S control we cannot assume any liability for results obtained or damages occurred due to improper application.

This document replaces all former versions

Emerson Electric GmbH & Co OHG - Postfach 1251 - Heerstraße 111 - D-71332 Waiblingen - Germany - Phone .49-(0)7151-509-0 - Fax .49-(0)7151-509-200

www.emersonclimate.com/europe

EC2-292_65138_EN_R02.doc Replacement for Rev.: 01 4 / 4 Part No.: 862 891 26.06.2008