EC3-X32 (PA
Instruction Sheet
PA-00319
June 2013
EC3-X32 Superheat Controller
EC3-X32 Superheat Controller with TCP/IP Communication Capability
Description
EC3-X32 is the superheat controller with TCP/IP connection
used in conjunction with Emerson Electrical Control Valves
EX4...EX8.
Note: This document contains short form instructions for
experienced users.
Electrical installation
•Refer to the electrical wiring diagram for electrical connections.
• Do not apply voltage to the controller before completion of wiring.
•Ground the metal housing with a 1/4 in spade connector.
•Important: Keep controller and sensor wiring well separated
from mains wiring. Minimum recommended distance 1.2 in.
Warning: Use a class II category transformer for 24VAC power
supply. Do not ground the 24VAC lines. We recommend to use
individual transformers for EC3 controller and for 3rd 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.
Digital input status is dependant to operation of compressor/thermostat
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.
•Disconnect all voltages from system before installation.
•Do not operate system before all cable connections are
completed.
•Comply with local electrical regulations when wiring.
Note: The EC3-X32 series contains a lead, acid gel rechargeable battery. The battery must NOT be disposed of with other
commercial waste. Instead, it is the user’s responsibility to
pass it to a designated collection point for the safe recycling
of batteries (harmonized directive 98/101/EEC). For further
information contact your local environmental recycling center.
Technical data
Power supply
24VAC ±10%; 50/60Hz; 1A
Power consumption
25VA max. including EX4 … EX8
Plug-in connector
Grounding
Protection class
COM, TCP/IP connection
Removable screw terminals wire size 12-20 AWG
1/4 in spade earth connector
IP20
RJ45 Ethernet
Connection to optional
ECC-Nxx or CAT5 cable with RJ45 connectors
local ECD-002
Digital Inputs
0/24VAC/DC for stop/start function
NTC input
Emerson temperature sensor ECN-N60
4-20 mA Analog input
Emerson PT4-07M / PT4-18M / PT4-30M
4-20 mA Analog output
For connection to any 3rd party controller with
12/24VDC power supply and appropriate burden
Output alarm relay
SPDT contact 24V AC/DC, 2 Amp inductive load(If L2 = 1) Activated: During normal operation (no alarm condition)
Deactivated:
During alarm condition or power supply is OFF
Output pump down relay
SPDT contact 24V AC/DC, 2 Amp inductive load(If L2 = 1)
Activated: During normal operation
Deactivated:
All other conditions
Stepper motor output for Maximum current 0.8A with nominal 24VDC
EX4…EX8
operating voltage
Mounting
The EC3-X32 is designed to be mounted onto a standard DIN rail.
EmersonClimate.com/FlowControls
Commander Operating condition
Compressor Compressor starts
Compressor stops
ThermostatDemand (compressor must be ON)
No demand
Digital input
Closed / 24V (Start)
Open / 0V (Stop)
Closed / 24V (Start)
Open / 0V (Stop)
Preparation for Start-up
•Evacuate the entire refrigeration circuit.
Warning: Emerson Electrical Control Valves EX4...EX8 are delivered at half open position. Do not charge system before closure
of valve.
•Apply supply voltage 24V to EC3 while the digital input is 0V
(open). The valve will be driven to close position.
•After closure of valve, start to charge the system with refrigerant.
Possibilities of connecting EC3-X32 to a network or PC
A TCP/IP Controller Readme file is available on the www.eCopeland.com 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.
1) Connect the EC3-X32 using the optional ECC-Nxx cable
assembly or a standard CAT5 network cable with RJ45 plugs
assembly to a network or router that enables the controller to
receive a dynamic TCP/IP address or
2) Connect the EC3-X32 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.
Wiring
Setting and Visualizing Data: WebPages
(recommended method)
Important: Make sure that digital input is 0V (open). Turn the power
supply ON.
Four parameters i.e. refrigerant type (u0), pressure sensor type (uP),
valve type (ut) and control mode can be set only when digital input
is open (0V) while the power supply is ON (24V). This feature is for
added safety to prevent accidental damage of compressors and other
system components. All other parameters can be modified at any
time.
The EC3-X32 has a TCP/IP Ethernet communication interface enabling the controller to be directly connected to a network or a PC via
the standard Ethernet port. The EC3-X32 controller has embedded
WebPages to enable the user to visualize the parameter lists using
real text labels.
To view WebPages on the PC, a standard WebBrowser like Internet
Explorer® or Mozilla Firefox and JRE Java Runtime Environment is
needed. JRE can be downloaded at no charge from the www.java.
com website.
Open the Internet browser program on the computer and, if EC3-X32
is connected directly to PC with a crossover cable enter the default
TCP/IP address of the controller (192.168.1.101) into the address
line, or the dynamic address from the DHCP server from network/
Router. Refer to the TCP/IP Controller-Readme file if a specific port
is required.
It is possible to identify the dynamic TCP/IP address assigned by
DHCP of the Router or network, refer to the TCP/IP Controller-Readme file.
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 on 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 visualized 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.
Superheat, evaporating pressure, coil-out temperature and evaporating temperature are available on a 15 minutes rolling chart. Refer to
the TCP/IP Controller-Readme file for a complete description of the
features available for the TCP/IP series of controllers.
A: White wire B: Black wire C: Blue wire D: Brown wire
E: M12 Plug cable assembly EX5-Nxx for connection to EX4/EX5/
EX6/EX7/EX8
F: Remote control panel, system controller
G: Alarm relay, dry contact. Relay coil is not energized at Alarm or
power off
H: Digital input (0V/open = Stop; 24V/closed = Start)
I: Transformer Class II, 24VAC secondary / 25VA
J: Third party controller (can use the analog output signal from
EC3)
2
Alternative procedure for
parameter modification using ECD-002
List of parameters in scrolling sequence by pressing
Note: Some of the functions/parameters (manual control and TCP/IP
configuration) can not be modified when using ECD-002 comparing
to a set-up by PC via TCP/IP. Warning: All alarms are disabled during manual control. We do not recommend unattended operation of
system during manual control.
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.
•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 parameters:
•Do not press any button for at least 60 seconds (TIME OUT).
Special Functions
•Press
or
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.
0: Reset controller to factory settings (this action is possible
only when digital input is 0V i.e. open).
1: Displays the current TCP/IP address.
2: Assign temporary 192.168.1.101 as TCP/IP address if
EC3-X32 has different address.
•Press SEL to activate the function without leaving the special function mode.
•Press PRG to activate the function and leave the special function
mode.
ECD-002 Display/Keypad Unit
(LEDs and Button Functions)
Blinking: valve is opening
ON: valve is fully open
Blinking: valve is closing
ON: valve is fully closed
Parameters setting/saving
Next parameter/
value (higher)
ON: demand
OFF: no demand
Blinking: pump down
ON: alarm
OFF: no alarm
Prg & Sel (5 sec)
Manual reset for
blinking alarm codes
Next parameter/
value (lower)
Selecting/confirming
Control (valve) start-up behavior (Parameter uu and u9)
* Min. and Max. setting values are dependant to selected type of refrigerant.
%
Pump down function (if P6 = 1 and L2 = 1)
uu
u9
Sec.
Digital input status Alarm Condition
24V (ON)
NO
0V (OFF)
NO
0V or 24V
YES
EC3-X3 BA.cdr
EX4/5/6 ≤ 1.5 seconds
EX7 ≤ 3.2 seconds
EX8 ≤ 5.2 seconds
button
Factory Field
Code Parameter description & choices
Min Max Setting Setting
H5 Password
1
199 12
u0
System Refrigerant
071
0 = R22;
1 = R134a; 2 = R507; 3 = R404A; 4 = R407C;
5 = R410A; 6 = R124; 7 = R744 (subcritical application)
uP Installed pressure sensor type
0
2
0
0 = PT4-07M (for R22/R134a/R507/R404A/R407C/R124)
1 = PT4-18M (for R410A)
2 = PT4-30M (for R744, subcritical)
ut Installed valve type
1
5
5
1 = EX4;
2 = EX5;
3 = EX6; 4 = EX7;
5 = EX8
uu Start valve opening (%)
10
100
50
u9 Start opening duration (second)
1
30
5
uL Low superheat alarm function
0
2
1
0 = disable (for flooded evaporator)
1 = enable auto reset
2 = enable manual reset
Cut-out at 1°F (if it maintains 1 min.); Cut-in immediately at 3°F
u5 Superheat set-point (°F)
If uL enabled (auto or manual)
5.4
54
10.8
If uL disabled
0.9
54
10.8
u2
MOP function
011
0 = disable
1 = enable
u3 MOP set-point (°F) saturation temperature* * X
Factory setting is according to selected refrigerant (u0):
+55°F for R22
+59°F for R134a
+45°F for R507
+45°F for R404A
+59°F for R407C
+59°F for R410A
+122°F for R124
+23°F for R744
┌┘1 Value to show
0
4
0
0 = Measured superheat (F) 1 = Measured evaporator pressure (psi)
2 = Valve opening (%)
3 = Measured coil-out temp. (°F)
4 = calculated evaporating temperature (°F) from the pressure
┌┘5
Units conversion
010
0 = °C, K, bar
1 = °F, R, psig
(Psig values are divided by 10. Example: Display 12.5 is 125 psig)
u4 Superheat control mode
0
1
0
0 = Standard, 1 = Slow
uH High superheat alarm function 0
1
0
0 = disable, 1 = enable auto reset
uA High superheat alarm setpoint
16
40
30
ud High superheat alarm delay, min.
1
15
3
P2 Freeze protection cut-out, °F
-40
104
32
P3 Freeze protection cut-in, °F
-35
109
37
P4 Freeze protection alarm function
0
2
0
(0 = disable, 1 = enable auto-reset, 2 = enable manual reset)
P5 Freeze protection alarm delay, sec.
5
199
30
P6
Pump-down function
010
(0 = disable, 1 = enable auto-reset)
P7 Pump-down cut-out, psig
-7.3 261.1 0.5
P8 Pump-down time delay, sec.
0
199
30
P9 Low pressure alarm function
0
2
0
(0 = disable, 1 = enable auto-reset, 2 = enable manual reset)
PA Low pressure alarm cut-out, psig
-11.6 256.7
0
Pb Low pressure alarm delay, sec.
5
199
5
Pd Low pressure alarm cut-in, psig
-7.3 261.1 0.3
b1 Battery error management, when battery
032
is defective (EC3-X33 only), see below:
Alarm
Reset possibility after
Value Display
Alarm Relay
Valve
recovery/replacement
0
–
–
Regulating
–
1
Ab
–
Regulating
–
2
Ab
Signalling Fully close
Auto
3
Ab
Signalling Fully close
Manual
(blinking)
L2
Output logic
031
0: Alarm = normal, pump down. = normal
1: Alarm = inverse, pump down. = normal
2: Alarm = normal, pump down. = inverse
3: Alarm = inverse, pump down. = inverse
3
Pump down relay
Activate
Deactivate when pressure drops
below P7 and after elapsed time P8
Deactivate
Start-up
Mounting of ECD-002
Start the system and check the superheat and operating conditions.
The EC3-X32 is fully functional without connected PC or keypad/display unit ECD-002.
ECD-002 can be installed at any time also during operation.
•ECD-002 can be mounted in panels with 2.8x1.1 in cutout
•Push controller into panel cut-out.
(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 keypad is secured. Do not
over tighten as mounting lugs will
break easily.
Dimensions
EC3-X32
2.9
4.1
5.4
2.5
ECD-002
1.42
3.1
Cutout 2.8 x 1.1 in
.2
1.44
Error/Alarm Handling
Alarm
code
E0
E1
Description
Pressure transmitter error
Temperature sensor error
Related
Alarm
parameter relay
-
Signalling
-
Signalling
Valve
Fully close
Fully close
What to do?
Check wiring connection and measure the signal 4 to 20 mA
Check wiring connection and measure the resistance of sensor
AΠ EX4…EX8 electrical -
Signalling
-
Check wiring connection and measure the resistance of winding
connection error
Ab
b1: 1
-
Regulating
Battery potentially does not have enough charge to close valve in case Ab
Battery error
b1: 2
Signalling
Fully close
of main power supply interruption. May occur temporarily with new Ab blinking
b1: 3
Signalling
Fully close
controllers or after long storage but should disappear when battery is charged sufficiently. If Ab remains active even when battery is charged,
battery may be defective and should be replaced.
AE blinking Pump down action can not P6: 1
Signalling
-
Allocate the source, which does not let suction pressure drops be accomplished
below desired set-point
AF
Freeze protection
P4: 1
Signalling
Fully close
Check the system for cause of low pressure such as AF blinking P4: 2
Signalling
Fully close
insufficient load on evaporator
AL
Low superheat (<1°F)
uL: 1
Signalling
Fully close
Check wiring connection and operation of valve
AL blinking
uL: 2 Signalling
Fully close
AH
High superheat
uH: 1
Signalling
Fully close
Check the system
AP
Low pressure
P9: 1
Signalling
Fully close
Check the system for cause of low pressure such as refrigerant loss
AP blinking
P9: 2
Signalling
Fully close
Er
Data error display – -
-
-
Data send to the display is out of range. Check temperature out of range
and pressure sensor.
Note: When multiple alarms occur, the highest priority alarm is displayed until being cleared,
then the next highest alarm is displayed until all alarms are cleared. Only then will parameters be shown again.
Requires manual reset
after resolving alarm
No
No
No
Yes
Yes
No
Yes
No
Yes
No
No
Yes
No
Message
— No data to display
The display will show an “—” at start up and when no data is sent to ECD-002
Checking system operating conditions using local display/keypad ECD-002
The data to be permanently shown on the display can be selected by
the user (parameter ┌┘1). It is possible to temporarily display these
values. However, this function is not available in an alarm condition.
The display will show for one second the numerical
identifier of the data (see ┌┘1 parameter) and then the selected
data. After 5 minutes, the display will return to the value selected by
parameter ┌┘1.
Service/Troubleshooting
Symptom
Cause
Action
Operating superheat is several degrees higher or
Incorrect signal from pressure or 1- Check the sensors
lower than set-point
temperature sensors
2- Make sure ECN-N60 temperature sensor is used
3- For optimum accuracy, please use:
PT4-07M for R22/R134a/R507/R404A/R407C/R124
PT4-18M for R410A
PT4-30M for R744
4- Make sure the sensor cables are not installed along
with other high voltage cables
Operating superheat is too low i.e. compressor wet running 1- Incorrect wiring of ECVs
1- Check the wiring
2- Defective sensors
2- Check the sensor
Valve is not fully closed
1- The digital input is ON (24V)
1- Valve is shut off only when the digital input is turned off (0V)
2- Wrong setting of parameter ut. 2- Check the setting of parameter ut
Instable superheat (hunting)
Evaporator is designed to operate Increase the superheat set-point
at higher superheat Valve opens when EC3 commands to close and vice versa Wrong wiring between EC3-X32 Correct the wiring
and valve
EX8 is not able to open at high differential pressure
Wrong setting of parameter ut
Check the parameter ut. (Larger valve requires higher torque
and higher current)
Superheat set-point is shifting after several months of Stepper motor driven valves Do not apply permanent 24V digital input. Interrupt digital input
uninterrupted operation or permanent jumper of 24V require synchronization
once every week for 5 seconds if compressor never stops.
digital input
EmersonClimate.com/FlowControls
Technical Support: 1-866-625-8416
4
PA-00319 (06/13) Emerson is a trademark of Emerson Electric Co. ©2013 Emerson Climate Technologies, Inc. All rights reserved.
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