Page 1
EC3-751 Condenser Controller with LON Interface
Operating Instructions
Contents:
Safety instructions: 1
Technical data: 1
Mounting 1
Electrical Installation 2
Setup and Parameter Modification
using the Keypad 2
Temporary Display of Data: 2
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 EC3-751 condenser controller is a digital controller for air cooled condensers.
The condenser may consist of up to 6 fans, one of which is continuously speed
controlled. The control target is to maintain the condensing pressure at a defined
value by varying the available fan capacity.
Load Default Parameters: 2
Special Functions 2
Indications On The Display 2
Alarm Codes and Messages 2
Parameter List 3
Visualising Data 4
GB
Technical Data
EC3 Series Controller
Power supply 24VAC ±10%; 50/60Hz; Class II
Power consumption 20VA max.
Communication LON FTT10
Plug-in connector size Removable screw terminals
Temperature storage
operating
Humidity 0…80% r.h. non condensing
Protection class IP20
Pressure transmitter inputs 24VDC, 4...20mA
2 Temp. inputs for Ambient and
Control Temperature (1)
Humidity transmitter input (2) 24VDC, 4...20mA, 2 wires
Digital Inputs 24VAC/DC or 230VAC
Fan output relays Inductive (AC15) 250V/2A
(6x) + General alarm output + Resistive (AC1) 250V/8A
Heat recovery output
Triac rating 250V AC, max. 2A
ECD-000 Display Unit
Power Supply From EC3-751 via connecting cable
Display 2½-digit red LED with decimal point
LED indicators Controller 1, Controller 2, p bar, Alarm, IR status
Temp & Humidity Identical to EC3-751 specifications above
Protection class IP65 (front protection with gasket)
Connecting cable ECC-N10 (1m), ECC-N30 (3m), ECC-N50 (5m) or
Mounting
The EC3-751 can be mounted onto a standard DIN rail.
6.3mm spade earth connector
wire size 0.14 … 1.5 mm
-20 … +65°C
0 … +60°C
NTC 10 kΩ @ 25°C, -50 … +50°C
reversible between °C and °F
CAT5 cable with RJ45 connectors
2
For the measurement of the condensing pressure, a PT4 pressure sensor (3) with 4
– 20 mA interface can be connected to the controller. The condenser controller has
eight relay outputs, six to command the fans (7), one for the heat recovery solenoid
(9) and one for General Alarm. Eight digital inputs for 24V AC/DC or 230V AC
are available, six for fan serial alarm (4), one for high pressure alarm (5) and one
for heat recovery demand (6). The first fan (8) can be continuously speed
controlled by the analogue output 0 to 10V with an ALCO FSP Fan Speed
Controller or directly with the onboard TRIAC. The fan power supply must be
connected to the Triac. To meet the EMC compliance in this case, an external filter
must be fitted. Two analogue inputs (1) can be used to measure a control
temperature and the ambient temperature. A 4…20mA input (2) is reserved for the
relative humidity sensor.
The optional ECD-000 Display Unit can be connected to the EC3-751 for local
display of control parameters and for controller setup without the use of a PC.
Because the EC3-751 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.
• It is intended for use by persons having the appropriate knowledge and skill.
• 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
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.
EC3-751_65087_EN_R04.doc Replacement for R03 1 / 5 DWG Nr.: 864 915 26.09.2007
Page 2
EC3-751 Condenser Controller with LON Interface
Operating Instructions
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
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.
Neuron Id / Service Pin:
The service pin is available on ECD display and on the controller. It is only
needed, when using controller in a LON network.
• Display:
Press the
the left upper corner will indicate the transmission of the Neuron ID.
• Controller:
There is a small hole left of the network connector. Use a small pen or
screwdriver to press the switch behind the hole. An LED close to the switch will
light to indicate the transmission of the Neuron ID.
Load Default Parameters:
• Use a small pen or screwdriver to press the service pin switch on the controller
and switch on the power supply on. The EC3-751 will be reset to its default
settings.
•
Wiring Diagram (controller label)
rd
party
button for app. 1 second to send the Neuron ID. An LED (Service) in
ECD-001
GB
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: 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 LED
Fan 7 On
Controller LED
Service LED
Press. Sensor LED
Pressure LED
Alarm LED
Fan 6 On
Fan 5 On
Fan 1 On
Fan 2 On
Fan 3 On
Fan 4 On
EC3-751_65087_EN_R04.doc Replacement for R03 2 / 5 DWG Nr.: 864 915 26.09.2007
Page 3
EC3-751 Condenser Controller with LON Interface
Operating Instructions
List of Parameters
/ DISPLAY PARAMETERS
/1 Value to show 0 3 - 0
0 = fans states
1 = condensing pressure (bar)
2 = saturation temperature from condensing pressure (°C)
3 = medium temperature (Contr. Tmp.)
P SET-POINT PARAMETERS
P0 Condensing setpoint
For unit see control strategy (c7)
P1 Condensing band
For unit see control strategy (c7)
P2 Condensing setpoint 2 -1.0 50 bar 14.0
P3 Condensing recovery min -9.9 50 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 25°C
P7 Condensing shift temp max -50 50 °C 15°C
P8 Condensing recovery max -9.9 50 bar 50.0
t TIME PARAMETERS
t1 Condensing request on time 0 99 10 sec
t2 Condensing request off 0 99 10 sec
A ALARM-PARAMETERS
A1 Alam delay HP 0 99 10 sec
A2 Condensing alarm limit min -1.0 50 bar 10.0
A3 Condensing alarm limit max -1.0 50 bar 27
A4 Alarm delay condensing limit min 0 99 10 sec
A5 Alarm delay condensing limit max 0 99 10 sec
A8 Alarm delay serial alarm fan 0 99 10 sec
A9 Service interval 0 99 10 000
u STEP ENABLE PARAMETERS
u0 Reset 0 7 - 0
0 = do nothing
1 = reset operating time fan 1
2 = reset operating time fan 2
3 = reset operating time fan 3
4 = reset operating time fan 4
5 = reset operating time fan 5
6 = reset operating time fan 6
7 = reset operating time all fans
u1 Fan enable 1 (0=disable, 1=enable) 0 1 - 1
u2 Fan enable 2 (0=disable, 1=enable) 0 1 - 1
u3 Fan enable 3 (0=disable, 1=enable) 0 1 - 1
u4 Fan enable 4 (0=disable, 1=enable) 0 1 - 1
u5 Fan enable 5 (0=disable, 1=enable) 0 1 - 1
u6 Fan enable 6 (0=disable, 1=enable) 0 1 - 1
(1)
Resolution of the local ECD-000 display is 10sec. E.g. value 2 means 20sec.
(2)
Resolution of the local ECD-000 display is 10 000h. E.g. value 2 means
20 000h. EMS allows data entry in sec / 1000hr
Min Max Unit Def.
Individ.
-1 50 Bar,K,°C 14.0
0.0 50 Bar,K,°C 4.0
(1)
3
(1)
3
(1)
0
(1)
0
(1)
0
(1)
0
(2)
hr
0
c APPLICATION PARAMETERS
Min Max Unit Def. Individ.
c1 Number of fans 1 6 - 3
c4 First fan 0 2 - 0
0 = in standard control loop,
1 = act as base load fan,
2 = act as modulating capacity; single stage;
0…10V for inverter command or TRIAC output
c5 Fan rotation
0 = FILO logic (First In, Last Out)
0 1 - 0
1 = FIFO logic (First In, First Out)
c6 Sensor fail (number of fans in case of
0 7 - 0
sensor failure)
c7 Control strategy 0 2 - 0
0 = control on discharge pressure
1 = control on difference between saturated discharge temp. and
ambient temperature sensor
2 = control on contr. tmp. sensor
r SENSOR PARAMETERS
r3 Condensing sensor 0% -1.0 50 bar 0.0
r4 Condensing sensor 100% -1.0 50 bar 30
r5 Condensing sensor offset -1.0 1.0 bar 0.0
r6 Refrigerant 0 7 - 4
0 = R 22
1 = R 134a
2 = R 507
3 = R 404A
4 = R 407C
5 = R 410A
6 = R 124
7 = R 744
F MODULATING PARAMETERS
F2 Fan 1 min speed (if modulated) 0.0 100 % 0.0
F3 Fan 1 max speed (if modulated) 0.0 100 % 100
F4 Fan 1 min on (0 = fan off, 1 =
0 1 - 0
maintain fan 1 on at minimum value)
F7 Modulation type for fan 1 0 1 - 0
0 = analogue output 0 … 10 V for FSP
1 = phase cutting with TRIAC (direct fan speed control)
H OTHER PARAMETERS
H2 ECD Display access 0 3 - 3
0 = all disabled
(Caution, access to controller only via LON network possible)
1 = Keyboard enabled
2 = IR remote control enabled
3 = Keyboard and IR rem. contr. enabled
H3 IR access code 0 199 - 0
H5 Password 0 199 - 12
Note: Concerning the indicated parameters, it is recommended to check, before
installing, if the factory value is suitable for the required use.
GB
EC3-751_65087_EN_R04.doc Replacement for R03 3 / 5 DWG Nr.: 864 915 26.09.2007
Page 4
EC3-751 Condenser Controller with LON Interface
Operating Instructions
GB
ALARMS AND MESSAGES
ALARM CODES
HP External high-pressure alarm
High pressure signal from digital input
hP High pressure alarm
Condensing pressure higher than the maximum limit
lP Low pressure alarm
Condensing pressure lower than the minimum limit
EP Error pressure
Condensing pressure sensor failure
hr High discharge pressure alarm
High discharge (condensing) pressure recovery
E1 Feedback alarm 1
Digital input associated with fan 1 has changed into alarm state (safety chain)
E2 Feedback alarm 2
Digital input associated with fan 2 has changed into alarm state (safety chain)
E3 Feedback alarm 3
Digital input associated with fan 3 has changed into alarm state (safety chain)
E4 Feedback alarm 4
Digital input associated with fan 4 has changed into alarm state (safety chain)
E5 Feedback alarm 5
Digital input associated with fan 5 has changed into alarm state (safety chain)
E6 Feedback alarm 6
Digital input associated with fan 6 has changed into alarm state (safety chain)
n1 Service alarm 1
Fan 1 operating time higher than run limit
n2 Service alarm 2
Fan 2 operating time higher than run limit
n3 Service alarm 3
Fan 3 operating time higher than run limit
n4 Service alarm 4
Fan 4 operating time higher than run limit
n5 Service alarm 5
Fan 5 operating time higher than run limit
n6 Service alarm 6
Fan 6 operating time higher than run limit
Er Data error
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.
Id Wink request received
The display will show a flashing “Id” when the wink request was received. The
node will receive 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.
OF Offline
The node is offline: no application is running. This is the result of a network
management command an will happen
- -- --- Controller disabled, waiting for restart
After a major change of the configuration parameter, the condenser controller is
disabled for 20 seconds. After this delay the controller restart automatically.
The condenser controller is disabled (with object status or with the network
variable nviContEnable).
N.B. When cleaning the display use damp cloth and neutral detergent.
Visualising Data: LON Monitoring Server
The EC3-751 has a LON communication interface enabling the controller to be
directly connected to a Monitoring Server or a LON network.
Neuron ID / Service PIN:
The service pin is available on the ECD 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 EMS__64074 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.
LonWorks® Interface
FTT10
Structure free topology
Termination RC Network
Medium Twisted pair, 2-wires
Connection 11, 12 Data - 13 free
Nodes/
64 Units
Segment
Transfer rate 78 kbits / s
Recommended cable types
Cable type
∅ / AWG
R
Ω / km
C
nF / km
V
% of c
FTT10 max.
length in m
Belden 85102 1,3 mm / 16 28 56 62 2700
Belden 8471 1,3 mm / 16 28 72 55 2700
Level IV 22 AWG 0,65 / 22 106 49 67 1400
JY ( ST) 2x2x0,8 0,8 / 20,4 73 98 41 900
TIA 568A CAT 5 0,51 / 24 168 46 58 900
For more details see the Echelon LonMark documentation
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
ALCO CONTROLS 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 ALCO'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.eCopeland.com/alcoliterature.cfm
EC3-751_65087_EN_R04.doc Replacement for R03 4 / 5 DWG Nr.: 864 915 26.09.2007
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