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EC2-391_65136_EN_R01.doc Replacement for 00 4 / 4 PCN: 865 022 21.09.2007
EC2-391 Display Case and Coldroom Controller
Operating Instructions
GB
Formula for Mean Factors A0, r8, r9
Temperature calculation by the following formula:
Temperature = Air
in
* (1 - Mean Factor / 100) + Air
out
* 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 Coil in 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.
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
dd Defrost drain delay
dI Defrost injection delay
du Defrost start-up delay
Cn Cleaning
CL Alarms are cleared
Visualising Data: LON Monitoring Server
The EC2-391 has a LON communication interface enabling the controller to be
directly connected to a Monitoring Server. It can be connected by using the optional
cable assembly to a LON network (ECC-014, Order No. 804 381, with RJ45 to
open, cable length 3m).
Neuron ID / Service PIN:
The service pin is available on the display. It is used to identify the controller in a
LON network. Press the
button for app. 1 second to send the Neuron ID. The
LED in the left upper corner will indicate the transmission of the Neuron ID.
The default settings may be modified remotely from the Monitoring Server via the
LON network. Consult the Monitoring Server user manual for more information.
It is also possible to display live graphical data on the server or to log data
containing the control temperature at defined intervals.
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