Emerson Process Management EC2-352 Formula for Mean Factors A0, r8, r9, Alarm Codes, Messages

EC2-352 Display Case and Coldroom Controller

Operating Instructions

GB

Formula for Mean Factors A0, r8, r9

Temperature calculation by the following formula:

Temperature = Airin * (1 - Mean Factor / 100) + Airout * Mean Factor / 100 Examples:

Mean factor = 0 Temperature = Air in Mean factor = 100 Temperature = Air out

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

Alarm Codes

E0 Pressure sensor alarm

E1 Coil out sensor alarm

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 E0 … 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.

AH High temperature alarm

AL Low temperature alarm

AE Thermostat emergency operation

Air sensor failure, system is in continuous cooling mode

AF Valve Status

Valve closed due to compressor safety loop active

Ao Superheat, emergency operation

Sensor(s) failure

Ar No refrigerant flow detected

No refrigerant flow was detected

Au Valve open 100% for more than 10 minutes

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. This function is action only when using SNMP protocol

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.

dS Defrost standby dP Pump down dF Defrost cycle

ddDefrost drain delay

dI Defrost injection delay du Defrost start-up delay Cn Cleaning

CL Alarms are cleared

Visualising Data : WebPages

A TCP/IP Controller-Readmefile is available on the www.emersonclimate.eu 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 EC2-352has a TCP/IP Ethernet communication interface enabling the controller to be directly connected to a PC or network via the standard Ethernet port. The EC2-352controller 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 EC2-352using 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-Readmefile 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. 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.

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: EmersonIDPassword: 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-Readmefile for a complete description of the features available for the TCP/IP series of controllers.

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 EMERSON believes to be reliable and which are in compliance with 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 EMERSON’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.eu
EC2-352_65117_EN_R05.doc	Replacement for Rev.:04	4 / 4	PCN : 864 925 16.09.2009