Emerson EC3-932, ECD-000 Operating Instructions Manual

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)

EC3-932_65149_EN_R02.doc Replacement for R01 3 / 4 PCN: 865 874 22.09.2009

EC3-932 Rack and Condenser Controller and ECD-000 Display Unit

Operating Instructions

GB

List Of Parameters

/ DISPLAY PARAMETERS

Min Max Unit Def.

Custom

/1 Value to show 0 4 - 0

0 = Compressors and fans states (controller 1 and controller 2)

1 = Suction pressure (bar)
2 = Saturation temperature (°C) calculated from suction pressure
3 = Condensing pressure (bar)
4 = Saturation temperature (°C) calculated from discharge pressure
5 = Digital Scroll capacity (%); 6 = Variable fan speed capacity %

Controller C1 (Rack Controller)

P SET-POINT PARAMETERS (C1)

P0

Suction pressure set point -1 50 bar 3.0

P1 Suction band 0 50 bar 2.0
P3 Fast recovery from low pressure -9.9 50 bar -9.9
P4 Suction shift (0=disabled, 1=enabled) 0 1 - 0
P5 Suction shift max 0 3.0 bar 3.0
P8 High discharge pressure recovery -9.9 50 bar 50.0
P9 Discharge recovery step 0 5.0 bar 1.0

t TIME PARAMETERS (C1)

t0 Integration time 30 99 10 sec* 60
t1 Time delay before adding capacity 0 99 10 sec* 6
t2 Time delay before removing capacity 0 99 10 sec* 0.2
t3 Compressor min on time 0 99 10 sec* 6
t4 Compressor min off time 0 99 10 sec* 6
t5 Maximum compressor switching

(0=number of switching unrestricted)

0 199 1/hr 0

A ALARM-PARAMETERS (C1)

A0 Alarm delay LP 0 99 10 sec* 0
A1 Alarm delay HP 0 99 10 sec* 0
A2 Suction alarm min. limit -1.0 50 bar 1.0
A3 Suction alarm max. limit -1.0 50 bar 6.0
A4 Alarm delay suction min. limit 0 99 10 sec* 0
A5 Alarm delay suction max. limit 0 99 10 sec* 0
A6 Maximum discharge temperature 50 150 °C 130
A7 Maximum discharge temperaturedelay 0 99 10 sec* 3
A8 Alarm delay serial alarm comp. 0 99 10 sec* 0
A9 Compressor service interval 0 99

10,000hr**

0

u STEP ENABLE PARAMETERS (C1)

u0 Compressor service interval reset 0 5 - 0

0 = do nothing

1 = reset operating time compr. 1
2 = reset operating time compr. 2

3 = reset operating time compr. 3
4 = reset operating time compr. 4

5 = reset op. time all compressors
u1 Compressor 1: 0=disable, 1=enable 0 1 flag 1
u2 Compressor 2 enable ( - " - ) 0 1 flag 1
u3 Compressor 3 enable ( - " - ) 0 1 flag 1
u4 Compressor 4 enable ( - " - ) 0 1 flag 1

c APPLICATION PARAMETERS (C1)

c1 Number of compressors 1 4 - 4
c3

Compr. control mode (0 = P mode,

0 3 -

2

1 = PI mode, 2 = dead band mode 3 = binary mode)

c4 Compressor 1 control mode 0 2 - 2

0 = in standard control loop 1 = act as base load compressor
2 = act as modulating capacity; function defined by parameter F5

c5 Compressor rotation 0 1 flag 1

0 = FILO logic (First In, Last Out) 1 = FIFO logic (First In, First Out)

c6 Sensor fail 0 4 - 0

(number of compressors in case of sensor failure)

h0 Discharge pressure sensor

0 = not available; 1 = available

0 1 flag 1

r SENSOR PARAMETERS (C1)

r0 Suction sensor 0% -1.0 50 bar -0.8
r1 Suction sensor 100% -1.0 50 bar 7
r2 Suction sensor offset -1.0 1.0 bar 0.0
r3 Refrigerant 0 7 - 3

0 = R 22

1 = R 134a

2 = R 507
3 = R 404A

4 = R 407C
5 = R 410A

6 = R 124
7 = R 744

* Resolution = 10 sec, on the local display. Example a value 2 means 20 sec.
** Resolution = 10,000 hrs. on the local display. Example a value 2 means 2.000 hours.

F MODULATING PARAMETERS (C1)

Min Max Unit Def. Custom
F2 Minimum output value (F5 = 0 or 1) 10 100 % 10
F3 Maximum output value (F5 = 0 or 1) 10 100 % 100
F3 PWM rate if F5 = 2 (Digital Scroll) 10 20 sec 10
F5 Analogue output mode for Comp. 1

0 or 1 = 0 … 10V; 2 = PWM (digital)

0 2 - 2

Controller C2 (Condenser Controller)

P SET-POINT PARAMETERS (C2)

P0 Condensing pressure set point -1 50 bar 14.0
P1 Cond. pressure band 0 50 bar 4.0
P2 Condensing pressure set point 2 -1 50 bar 14.0
P3 Condensing recovery min -9.9 50.0 bar -9.9
P4 Condensing shift (0 = off, 1 = on) 0 1 - 0
P5 Condensing shift max 0.0 3.0 bar 3.0
P6 Condensing shift temp min -50 50 °C 30°C
P7 Condensing shift temp max -50 50 °C 15°C
P8 Condensing recovery max -9.9 50 bar 50

t TIME PARAMETERS (C2)

t0 Integration time 30 99 10 sec* 60
t1 Time delay before adding capacity 0 99 10 sec* 3
t2 Time delay before removing capacity 0 99 10 sec* 3

A ALARM-PARAMETERS (C2)

A1 Alarm delay HP 0 99 10 sec* 0
A2

Condensing alarm limit min

-1.0 50 bar 10

A3

Condensing alarm limit max

-1.0 50 bar 27

A4

Alarm delay condensing limit min

0 99 10 sec* 0

A5

Alarm delay condensing limit max

0 99 10 sec* 0

A8

Alarm delay serial alarm fan

0 99 10 sec* 0

A9

Service interval

0 99

1,000 hr**

0

u STEP ENABLE PARAMETERS (C2)

u0 Fan service interval reset 0 4 - 0

0 = do nothing

1 = reset operating time fan 1
2 = reset operating time fan 2

3 = reset operating time fan 3
4 = reset op. time all fans

u1 Fan 1 enable (0=disable, 1=enable) 0 1 flag 1
u2 Fan 2 enable (0=disable, 1=enable) 0 1 flag 1
u3 Fan 3 enable (0=disable, 1=enable) 0 1 flag 1

c APPLICATION PARAMETERS (C2)

c1 Number of fans 1 3 - 3
c3 Control mode (0 = P mode,

1 = PI mode, 2 = dead band mode)

0 2 - 2

c4 First fan control mode 0 2 - 0

0 = in standard control loop,
1 = act as base load fan,

2 = act as modulating capacity (0…10V
for inverter command or TRIAC output)

c5 Fan rotation 0 1 flag 0

0 = FILO logic (First In, Last Out) 1 = FIFO logic (First In, First Out)

c6 Sensor fail (nr. of fans in case of sens fail) 0 3 - 0

r SENSOR PARAMETERS (C2)

r0 Condensing sensor 0% -1.0 50 bar 0.0
r1 Condensing sensor 100% -1.0 50 bar 30
r2 Condensing sensor offset -1.0 1.0 bar 0.0

F MODULATING PARAMETERS (C2)

F2 Fan 1 min speed (if controlled) 0 100 % 0
F3 Fan 1 max speed (if controlled) 0 100 % 100
F4 Fan 1 at min: (0=off; 1 =min speed) 0 1 flag 0
F7 Output mode for modulating fan 1: 0 1 flag 0

0 = 0 – 10V analogue output; 1 = Phase cutting with Triac

H OTHER PARAMETERS

H2 ECD Display access 0 3 - 3

0 = all disabled (Caution, access

to controller only via TCP/IP
network possible)

1 = Keyboard enabled
2 = IR remote control enabled
3 = Keyboard and IR remote

control enabled
H3 IR access code 0 199 - 0
H5 Password 0 199 - 12

EC3-932_65149_EN_R02.doc Replacement for R01 4 / 4 PCN: 865 874 22.09.2009

EC3-932 Rack and Condenser Controller and ECD-000 Display Unit

Operating Instructions

GB

Alarm Codes

HP General alarm HP
Controller 1 + 2: High pressure signal from digital input
LP General alarm LP
Controller 1: Low pressure signal from digital input
hP High pressure alarm

Controller 1 suction pressure; Controller 2 condensing pressure to high

lP Low pressure alarm

Controller 1 suction pressure; Controller 2 condensing pressure to low

EP Sensor failure

Controller 1 suction pressure; Controller 2 condensing press. sensor fail

Ed Sensor failure condenser

Controller 1: Discharge pressure sensor failure

Fr Fast recovery suction low

Controller 1: Fast recovery from low suction pressure
Controller 2: Fast recovery from low condensiong pressure

hr Fast recovery from high pressure

Controller 1: High suction pressure recovery
Controller 2: High discharge pressure recovery

d1 Discharge temperature alarm 1

Discharge end temperature from compressor 1 is too high

d2 Discharge temperature alarm 2

Discharge end temperature from compressor 2 is too high

d3 Discharge temperature alarm 3

Discharge end temperature from compressor 3 is too high

d4 Discharge temperature alarm 4

Discharge end temperature from compressor 4 is too high

E1 Serial alarm E1

Controller 1: Digital input from compressor 1 alarm (safety chain)

Controller 2: Digital input from fan 1 alarm (safety chain)

E2 Serial alarm E2

Controller 1: Digital input from compressor 2 alarm (safety chain)

Controller 2: Digital input from fan 2 alarm (safety chain)

E3 Serial alarm E3

Controller 1: Digital input from compressor 3 alarm (safety chain)

Controller 2: Digital input from fan 3 alarm (safety chain)

E4 Serial alarm E4

Controller 1: Digital input from compressor 4 alarm (safety chain)

n1 Service alarm compressor 1 / fan 1

Controller 1: Compressor 1 operating time higher than run limit
Controller 2: Fan 1 operating time higher than run limit

n2 Service alarm compressor 2 / fan 2

Controller 1: Compressor 2 operating time higher than run limit
Controller 2: Fan 2 operating time higher than run limit

n3 Service alarm compressor 3 / fan 3

Controller 1: Compressor 3 operating time higher than run limit
Controller 2: Fan 3 operating time higher than run limit

n4 Service alarm compressor 4

Controller 1: Compressor 4 operating time higher than run limit

oL Oil receiver level alarm

Controller 1: Oil level detection from digital input

rL Refrigerant level alarm

Controller 1: Refrigerant level detection from digital input

Er Data error - out of range

Data send to the display is out of range

Messages

--- No data

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

In Configuration data initialization

The display will show an “In” when the configuration data are initialized
with the factory default values.

- -- --- Controller disabled, waiting for restart
After a major change of the configuration parameters, the rack controller is
disabled for 20 sec. After this delay the controller restart automatically.

Visualising Data: WebPages

A TCP/IP Controller-Readme file 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 EC3-932 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 EC3-932 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 EC3-932 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. 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 : 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.

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 .[phone] - Fax .[phone]
www.emersonclimate.eu