GB EC3-D7x Digital Superheat Controller EC3-D72 with TCP/IP communication capability Description

GB EC3-D7x Digital Superheat Controller EC3-D72 with TCP/IP communication capability Description
EC3-D7x Digital Superheat Controller
EC3-D72 with TCP/IP communication capability
GB
Operating Instructions
Description
!
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-D7x 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 (harmonised directive 98/101/EEC). For further information contact
your local environmental recycling centre.
•
Technical data
Power supply
24VAC ±10%; 50/60Hz; 1A
Power consumption
Plug-in connector
Grounding
Protection class
COM, TCP/IP connection
Connection to optional
local ECD-002
Digital Input; Cooling
demand
25VA max. including EX4 … EX6
Removable screw terminals wire size 0,14 .. 1,5 mm2
6,3 mm spade earth connector
IP20
RJ45 Ethernet
ECC-Nxx or CAT5 cable with RJ45 connectors
Digital Input; Comp2
running
Mounting
The EC3-D7x is designed to be mounted onto a standard DIN rail.
Electrical installation
•
•
Digital input status is dependant to operation of compressor/0-10V input
System
0-10V input from third party
Operating
Digital Inputs
controller
condition
Comp. 1 &
“Cooling demand” ECV remains closed irrespective of
Comp.2 in stop open (0V)
voltage input value
mode
“Comp 2 Running”
open (0V)
ECV active
Comp. 1 in run “Cooling demand” Input =0V: digital valve capacity at
& Comp.2 in
closed (24V) /
10% default capacity.
stop mode)
“Comp 2 Running” When the digital comp. is in by-pass
open (0V)
the ECV will:
Close when capacity is <70%
Be inhibited when the capacity is >70%
Comp 1 &
“Cooling demand” ECV active
Comp. 2 in run closed (24V) /
The ECV will always modulate even
mode
“Comp 2 Running” when the digital compressor is in byclosed (24V)
pass mode.
Comp.1 in stop “Cooling demand” ECV remains closed irrespective of
and Comp. 2 in open (0V) /
voltage input value
run mode starts “Comp 2 Running”
closed (24V)
Digital comp. should always be regarded as base load; compressor 1
Wiring
0/24VAC/DC for stop/start function. EX valve closes
during stop command. Typically thermostat or third
party controller.
0/24VAC/DC typically connected to auxiliary
connection. EX valve control loop remains active
when input is 24V and the digital scroll is idle.
Emerson temperature sensor ECN-N60 or ECN-P60
NTC input; Coil-out
temperature sensor
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
Deviation from input
±8% max
signal
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
! If the output relays are not utilized, the user must ensure appropriate safety
precautions are in place to protect the system against damage caused by a
power failure.
Output Digital Scroll t
24V or 230V AC output to activate PWM valve on
Digital Scroll
Triac
Stepper motor output for Maximum current 0.6A with nominal 24VDC
EX4…EX6
operating voltage
Ambient temperature
0 … 60°C
range
1 … 25°C (for best battery life time)
> 35°C battery life time < 2 years
! In order to provide system protection in the event of power loss, it is
recommended to change the battery annually.
•
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. Do not
ground the 24VAC lines. We recommend using 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.
•
EC3-D7x is the superheat controller with
TCP/IP connection for stepper motor driven
Alco Electrical Control Valves EX4...EX6
and is optimized to operate with the
Copeland Digital Scroll series utilising a 010V input from a third party controller. The
controller synchronises the PWM digital
compressor solenoid valve with the
superheat controlled by the electrical control valve; EX series. The EC3-D73 has
the same functionality but can only be set-up via the ECD-002 display. It has no
external communication functionality.
Note: This document contains short form instructions for experienced users.
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 6.3mm spade connector.
EC3-D72_65141_EN_R02.doc
Replacement for R01
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
F: 24V/230V Triac output to PWM
Digital Scroll valve
G: Remote control panel, system
controller
H: Alarm relay, dry contact. Relay coil is
not energised at Alarm or power off
!
J:
K:
L:
M:
The use of the relay is essential to
protect the system in case of power
failure if the communications interface N:
O:
or the ECD-002 are not utilized..
I: Digital input 1: “Cooling demand”
(Digital compressor run: (0V/open =
P:
Stop; 24V/closed = Control Start;)
1/4
Transformer Class II, 24VAC
secondary / 25VA min. Model
ECT-323
Third party controller (can use the
suction pressure (4-20mA) analog
output signal from EC3)
Pump down relay, dry contact.
Relay is energized during normal
operation.
Digital input 2: “Comp. 2 running”
(0V/open = Comp2 stop;
24V/closed = Comp2 running
Discharge Temp. Sensor
0-10V Digital Scroll capacity
demand signal from system
controller
ECN-N60 Coil out sensor
PCN: 865 019
11.02.2009
EC3-D7x Digital Superheat Controller
EC3-D72 with TCP/IP communication capability
GB
Operating Instructions
Preparation for Start-up:
Vacuum the entire refrigeration circuit.
Warning: Alco Electrical Control Valves EX4...EX6 are delivered at half open
position. Do not charge system before closure of valve.
• Apply supply voltage 24V to EC3 while the cooling demand 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-D72 to a network or PC
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.
1) Connect the EC3-D72 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-D72 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.
Setting and visualising Data: WebPages (recommended method)
Important: Make sure that cooling demand 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 cooling demand digital input is open (0V)
and 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-D72 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-D72 controller has embedded WebPages to enable the user to
visualise 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-D72 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 ControllerReadme file.
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 10 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.
Alternative procedure for parameter modification using ECD-002
Note: Some of the functions/parameters (manual control and TCP/IP
configuration) cannot 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 the password is displayed (default 12).
If the password was changed, select the new 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;
or to show..."
Repeat the procedure from the beginning "press
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:
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.
or
to select the function. The number of special functions is dynamic
• Press
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-D72 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 close
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 visualised in real text together with the program code as
defined in the parameter list below.
EC3-D72_65141_EN_R02.doc
Replacement for R01
Parameters setting/saving
ON: demand
OFF: no demand
Blinking: pump
down
ON: alarm
OFF: no alarm
Next parameter/
value (higher)
Not applicable
for the EC3-D72
Prg & Sel (5 sec)
Manual reset for
blinking alarm codes
2/4
Next parameter/
value (lower)
Selecting/confirming
PCN: 865 019
11.02.2009
EC3-D7x Digital Superheat Controller
EC3-D72 with TCP/IP communication capability
GB
Operating Instructions
button
Field
Min Max Factory
setting
setting
Password
1
199
12
System refrigerant
0
7
4
0 = R22;
1 = R134a; 2 = R507; 3 = R404A; 4 = R407C;
5 = R410A; 6 = R124; 7 = R744 (subcritical application)
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)
Installed valve type
1
3
2
1 = EX4; 2 = EX5; 3 = EX6
Start valve opening (%)
10 100
50
Start opening duration (second)
1
30
5
Low superheat alarm function
0
2
1
0 = disable (for flooded evaporator)
1 = enable auto reset
2 = enable manual reset
Cut-out at 0.5K (if it maintains 1 min.); Cut-in immediately at 3K
Superheat set-point (K)
If uL enabled (auto or manual)
3
30
6
If uL disabled
0.5
30
6
MOP function
0
1
1
0 = disable 1 = enable
MOP set-point (°C) saturation
*
*
X
temperature
Factory setting is according to selected refrigerant (u0):
+13°C for R22
+15°C for R134a
+7°C for R507
+7°C for R404A +15°C for R407C
+15°C for R410A
+50°C for R124
-5°C for R744
Units conversion
0
1
0
0 = °C, K, bar
1 = °F, R, psig
(Psig values are divided by 10. Example: Display 12.5 is 125 psig)
Value to show
0
4
0
0 = Measured superheat (K) 1 = Measured evaporator pressure (bar)
2 = Valve opening (%)
3 = Measured coil-out temp. (°C)
4 = Calculated evaporating temperature (°C) from the pressure
5 = Compressor capacity in %
Superheat control mode
0
1
0
0 = Standard, 1 = Slow
High superheat alarm function
0
1
0
0 = disable, 1 = enable auto reset
High superheat alarm setpoint
16
40
30
High superheat alarm delay, min.
1
15
3
Freeze protection cut-out, °C
-40 40
0
Freeze protection cut-in, °C
-37 43
3
Freeze protection alarm function
0
2
0
0 = disable, 1 = enable auto-reset,
2 = enable manual reset
Freeze protection alarm delay, sec.
5
199
30
Pump-down function
0
1
0
0 = disable, 1 = enable auto-reset
Pump-down cut-out, barg
-0,5 18
0.5
Pump-down time delay, sec.
0
199
30
Low pressure alarm function
0
2
0
0 = disable, 1 = enable auto-reset,
2 = enable manual reset
Low pressure alarm cut-out, barg
-0,8 17,7
0
Low pressure alarm delay, sec.
5
199
5
Low pressure alarm cut-in, barg
-0,5 18
0.3
Code Parameter description and choices
H5
u0
uP
ut
uu
u9
uL
u5
u2
u3
┌┘5
┌┘1
u4
uH
uA
ud
P2
P3
P4
P5
P6
P7
P8
P9
PA
Pb
Pd
Code Parameter description and choices
Min
Max Factory
Field
settings settings
L2 Output logic
0
3
1
0: Alarm & pump down. = normal 1: Alarm = inverse, pump down. = normal
3: Alarm & pump down. = inverse 2: Alarm = normal, pump down. = inverse
b1 Battery error management, when battery
0
3
2
is defective, see below:
Alarm display
Reset possibility after
value
Alarm relay
Valve
recovery/replacement
0
Regulating
1
Ab
Regulating
2
Ab
Signalling Fully close
Auto
3
Ab (blinking) Signalling Fully close
Manual
! When setting b1 to option 0 or 1, the user must ensure appropriate safety
precautions are in place to protect the system against damage caused by a
power failure.
/6 Show decimal point; 0=yes, 1 = no
0
1
0
A6 Maximum discharge temperature; °C
100
140
130
A7 Discharge temp. alarm delay; sec.
0
199
30
F2 Minimum capacity; %
10
100
10
F3 Maximum capacity; %
10
100
100
F6 Scroll Valve, PWM cycle time; sec.
10
20
20
t3 Monitor discharge temperature sensor
0
1
0
0 = no, 1 = Yes
ru 0-10V input filtering; 0 = off, 1 = on
0
1
*) Min. and Max. setting values are dependant to selected type of refrigerant.
Control (valve) start-up behaviour (Parameter uu and u9)
%
uu
EX4/5/6 ≤ 1.5 seconds
Sec.
u9
EC3-X3 BA.cdr
List of parameters in scrolling sequence by pressing
Pump down function (if P6=1 and L2=1)
Cooling demand
status
24V (ON)
0V (OFF)
Alarm condition Pump down relay
NO
NO
0V or 24V
YES
Activate
Deactivate when pressure drops below
P7 and after elapsed time P8
Deactivate instantaneously
Start-up
Start the system and check the superheat and operating conditions. The EC3-D72 is
fully functional without connected PC or keypad/display unit. ECD-002.
Mounting of ECD-002
ECD-002 can be installed at any time also during operation.
• ECD-002 can be mounted in panels with 71x29 mm
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.
Error/Alarm handling
Alarm
Description
Related
Alarm
code
parameter
relay
Pressure transmitter error
Signalling
E0
Coil-out temperature sensor
Signalling
E1
error
Discharge temp. sensor
Signalling
E3
error
EX4…EX6 electrical
Signalling
AΠ
connection error
EC3-D72_65141_EN_R02.doc
Replacement for R01
Valve
Fully close
Fully close
Regulating
-
What to do?
Requires manual reset
after resolving alarm
No
No
Check wiring connection and measure the signal 4 to 20 mA
Check wiring connection and measure the resistance of sensor
10,000ohms @ 25°C
Check wiring connections and measure the resistance of the
sensor. Also check the status of the I/O configuration (t3)
Check wiring connection and measure the resistance of winding No
Refer to EX series datasheet: EX58e35008
3/4
PCN: 865 019
11.02.2009
EC3-D7x Digital Superheat Controller
EC3-D72 with TCP/IP communication capability
GB
Operating Instructions
Alarm
code
Ab
Alarm
relay
-
Regulating
b1: 2
Signalling
Fully close
Ab blinking
b1: 3
Signalling
Fully close
AE blinking Pump down action
can not accomplished
P6: 1
Signalling
Freeze protection
AF
AF blinking
P4: 1
P4: 2
Signalling
Already
closed by
Pumpdown
command
Fully close
Pumpdown
deactivated
Fully close
Pumpdown
deactivated
Fully close
Pumpdown
deactivated
Fully close
Pumpdown
deactivated
Fully close
Pumpdown
deactivated
-
Ab
Description
Battery error
Related
parameter
b1: 1
AL
AL blinking
Low superheat
(<0,5K)
uL: 1
uL: 2
Signalling
AH
High superheat
uH: 1
Signalling
AP
AP blinking
Low pressure
P9: 1
P9: 2
Signalling
dA
High discharge temp.
A6: alarm
setpoint
Signalling
Valve
What to do?
Battery potentially does not have enough charge to close valve
in case of main power supply interruption. May occur
temporarily with new controllers or after long storage but should
disappear when battery is charged sufficiently (allow 10hrs). If
Ab remains active even when battery is charged, battery may be
defective and should be replaced. (Replacement kit: 807 790).
Allocate the source, which does not let suction pressure drops
below desired set-point
Requires manual reset
after resolving alarm
Yes
Yes
Check the system for cause of low pressure such as insufficient
load on evaporator
No
Yes
Check wiring connection and operation of valve
No
Yes
Check the system
No
Check the system for cause of low pressure such as refrigerant
loss
No
Yes
Check the system
No
Fixed differential =
10°C
No
Data error display –
Data send to the display is out of range. Check temperature and
out of range
pressure sensor.
Note: When multiple alarms occur, the highest priority alarm is displayed until
Message
being cleared, then the next highest alarm is displayed until all alarms are
--- No data to display
The display will show an “---” at start up and when no data is send to ECD-002
cleared. Only then will parameters be shown again.
Er
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
Operating superheat is several degrees
higher or lower than set-point
Cause
Incorrect signal from pressure or
temperature sensors
Operating superheat is too low i.e.
compressor wet running
Valve is not fully closed
1- Incorrect wiring of ECV
2- Defective sensors
1- The cooling demand digital
input is ON (24V)
2- Wrong ECV selected.
Evaporator is designed to operate
at higher superheat
Wrong wiring between EC3-D72
and valve
Stepper motor driven valves
require synchronization
Unstable superheat (hunting)
Valve opens when EC3 commands to close
and vice versa
Superheat set-point is shifting after several
months of uninterrupted operation or
permanent jumper of 24V digital input
Dimensions EC3-D72/D73
Action
1- Check the 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
1- Check the wiring
2- Check the sensor
1- Valve is shut off only when the digital input is turned off (0V)
2- Check the setting of parameter ut
Increase the superheat set-point to a higher value; if system is stable, start to
decreasing gradually checking each time for a stable control
Check the wiring and obey the colour coding: white/black, blue/brown.
Do not apply permanent 24V digital input. Interrupt digital input once every week for
5 seconds if compressor never stops. This has the effect of referencing the valve to the
fully closed position.
ECD-002
Revision applicable to EC3-D72 software release =>114, rev 6
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
EC3-D72_65141_EN_R02.doc
Replacement for R01
4/4
PCN: 865 019
11.02.2009
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