ECL Comfort 300 incl. pulse module
ECA 88
Supplementary instructions
087R9705
VI.BB.O1.02 / 087R9705 © Danfoss 02/04 BC-TM
Table of Contents
1 INTRODUCTION ...............................................................................................................................3
1.1 SCOPE .............................................................................................................................................3
1.2 A
BOUT THE ECA 88 PULSE MODULE ..............................................................................................3
2 FUNCTIONAL OVERVIEW.............................................................................................................4
2.1 COMMUNICATION ...........................................................................................................................4
2.2 I
NPUT CONFIGURATION ..................................................................................................................5
3 INSTALLATION.................................................................................................................................6
3.1 ECA 88 CONNECTOR ......................................................................................................................6
3.2 C
ABLING.........................................................................................................................................6
3.3 H
EAT/FLOW METERS .......................................................................................................................6
4 ECL COMFORT 300 PARAMETERS .............................................................................................7
4.1 SETTING UP THE ECL COMFORT 300..............................................................................................7
4.1.1 Setting up the communication................................................................................................7
4.1.2 Setting time constants ............................................................................................................8
4.1.3 Setting the flow or energy reference ......................................................................................9
4.2 R
EADING MEASURED DATA...........................................................................................................10
5 TROUBLESHOOTING ....................................................................................................................11
5.1 W
HAT TO EXPECT .........................................................................................................................11
5.1.1 Update time..........................................................................................................................11
5.2 E
RROR CONDITIONS ......................................................................................................................12
5.2.1 Symptoms .............................................................................................................................12
5.2.2 Causes..................................................................................................................................12
2 VI.BB.01.02 / 087R9705 © Danfoss 02/04 BC-TM
Introduction
1 Introduction
1.1 Scope
This supplementary instruction is for ECL Comfort 300 incl. ECA 88 pulse
module.
This instruction is valid for:
§ ECL Comfort 300 software version 1.08+
§ ECA 88 pulse module hardware version 01, issue 02, software version 1.04
1.2 About the ECA 88 pulse module
When delivered from Danfoss A/S, the ECA 88 pulse module is included in the
ECL Comfort 300.
The package includes:
§ One 7-pin connector
§ One copy of this instruction
Regarding the question: Which of the ECL Comfort 300 versions and applications
support the ECA 88 pulse module (thereby permitting flow and energy limitation),
please consider the following:
Flow and energy limitation will be available in all new district heating applications
and will be added to relevant existing applications when they are updated or
modified.
Flow and energy limiting is not implemented in:
§ An ECL Comfort application card with card index CI 07 or lower
§ Applications where the lines 110 – 115 are not accessible
Note: Lines 110 – 115 are not accessible during the first 30 sec. after power on.
Compatible heat meters are listed in Table 2 page 5.
BC-TM VI.BB.O1.02 / 087R9705 © Danfoss 02/04 3
Functional overview
2 Functional overview
The ECA 88 pulse module enables the ECL Comfort 300 to read measured values
of flow and/or energy consumption from connected heat meters. The ECL Comfort
300 can use the measured data to perform outdoor temperature dependent flow
limitation or energy limitation.
Note: When using the ECA 88 pulse module, the ECL Comfort 300 cannot
receive flow/energy data via any other ports or slots. See Table 1.
ECA 80 ECA 81 ECA 82 ECA 83 ECA 84 ECA 85 ECA 86 ECA 87
√ √ √
- -
(-)
√ √
Table 1: ECL accessories
2.1 Communication
When the ECA 88 Pulse module is installed, the ECL Comfort 300 can get data
from heat and flow meters via pulse communication.
Pulse
(ECA 88 ↔ heat meter)
The ECL Comfort 300 is connected point-to-point to one or two single heat or flow
meters. ECL Comfort 300 supports voltage pulse communication in the frequency
range 0 – 200 Hz. The output from the heat or flow meters can be powered from
the ECA 88 pulse module via a pull-up resistor, to either 5V or 24V.
The ECA 88 detects a pulse when:
§ The change in voltage is higher than 3.5 Volt
§ The pulse width is longer than 1 ms
Internal
(ECA 88 ↔ ECL Comfort 300)
The ECA 88 module receives data from the communication line. It performs the
required conversions and sends the data to the ECL Comfort 300 every 30 seconds.
Settings in lines 111 – 115 in the ECL Comfort 300 are transferred to the ECA 88
pulse module to calculate e.g. the sampling time.
Note:
Exchange of data between the ECA 88 module and the ECL Comfort 300 CPU
takes place once every 30 seconds.
4 VI.BB.01.02 / 087R9705 © Danfoss 02/04 BC-TM
Functional overview
2.2 Input Configuration
The ECA 88 pulse module can receive data input via two channels named I and II.
Each channel can be configured as shown in Figure 1.
Mk1/2 Mk1/2 Mk1/2
Jumper/pulse I
Jumper/pulse II
5 V/
47k
24 V/
10k
Open
Figure 1: Jumper settings
Figure 2: Schematic principle
Recommended settings for supported heat and flow meters:
Jumper settings
5 V 24 V Open
Comments
Danfoss MD-meter
x
MD meter with external supply
Danfoss InfoCal
x
Pulse output from InfoCal
Danfoss MD-meter
and Danfoss InfoCal
x
MD meter supplied by InfoCal
Passive with MD pulses.
Danfoss CALSTREEM™
x
Pulse output from CALSTREEM
Kamstrup MULTICAL®III
x
Pulse output from MULTICAL®III
Landis & Staefa WZD-PC
x
Pulse output from WZD-PC
Table 2 Jumper settings for supported heat and flow meters
Note:
Change of jumper settings has to be done without removing the ECL Comfort 300
rear cover. If the ECL Comfort 300 is disassembled the warranty is no longer valid.
BC-TM VI.BB.O1.02 / 087R9705 © Danfoss 02/04 5
Installation
3 Installation
3.1 ECA 88 connector
Table 3 shows the pin assignment of the ECA 88 connector.
Table
3 Pin
assignment
Connector ECA 88 Description
1 Pulse input circuit I
2 - 6 Do not use!
7 Pulse input circuit II
ECL 300 Terminal Description
16 Pulse I/II common
Figure 3: Orientation of the connector
Connect the pulse signal to ECA 88’s connector and common to the ECL socket,
terminal 16 - sensor common connection.
Note:
The connector must be inserted into the ECL Comfort 300 as shown in
Figure 3.
3.2 Cabling
Cable specifications:
Communication Cable type Max. length Dimensions
Pulse Shielded twisted pair <50 m 2 x 0.4 mm2
Table 4: Cable types and dimensions
3.3 Heat/flow meters
For instructions on how to install and set up heat/flow meters, we refer to the
documentation provided by the manufacturer of the meter.
6 VI.BB.01.02 / 087R9705 © Danfoss 02/04 BC-TM
ECL Comfort 300 parameters
4 ECL Comfort 300 parameters
You set up the ECL Comfort 300 to measure/limit flow or energy by modifying the
settings of a few parameters. This section tells you how the relevant parameters
must be modified. For instruction on how to set the parameters, see the appropriate
ECL Comfort 300 User’s Guide, Installation and Maintenance section (the ‘grey’
part of the Guide).
When the ECA 88 pulse module is installed, the relevant parameters are accessible
via the ECL Comfort 300 front panel. Please make sure that the application card
supports the limiting function (see page 3).
The set-up of these parameters is described in the following sections. You should
modify the setting of the parameters in the order they are listed.
4.1 Setting up the ECL Comfort 300
4.1.1 Setting up the communication
Parameters 115 and 114 are used to inform the ECA 88 pulse module of the
communication set-up.
Before setting up parameters, you must determine:
§ Which communication channel(s) will you be using (see page 5)?
§ How will each communication channel be used (24 volt, 5 volt or open)?
§ Consider the range for measured flow/energy?
§ What is the significance of 1 pulse received, i.e. the amount of measured water
or energy?
In order to enable flow/energy limitation in both circuits controlled by the ECL
Comfort 300, you must set up the parameters 115 and 114 for both communication
channels (I and II). Communication channel I corresponds to circuit I and
communication channel II corresponds to circuit II.
When setting up parameters 115 and 114, you change between circuit I and II by
pressing
.
BC-TM VI.BB.O1.02 / 087R9705 © Danfoss 02/04 7
ECL Comfort 300 parameters
Param.
No.
Range Default
value
Description
Parameter No. 115 determines the unit and range of the flow/
energy measurement, display and reference. Parameter 115
also determines the unit of the amount of water or energy
significant by 1 pulse. The following rows of this table explain
the significance of the possible values of parameter 115:
Value Flow/energy
range
Flow/energy
unit
Pulse unit
Off 0 -- --
1 0 – 2999 l/h ml
2 0 – 2999 l/h l
3 0.0 – 299.9 m
3
/h ml
4 0.0 – 299.9 m
3
/h l
5 0.0 – 299.9 m
3
/h x 10 l
6 0 – 2999 m
3
/h m
3
7 0.0 – 299.9 kW Wh
8 0.0 – 299.9 kW x 10 Wh
9 0 – 2999 kW kWh
10 0.0 – 299.9 MW kWh
11 0.0 – 299.9 MW x 10 kWh
12 0 – 2999 MW MWh
13 0.0 – 299.9 GW MWh
14 0.0 – 299.9 GW x 10 MWh
115 Off,
1 - 15
Off
15 0 – 2999 GW GWh
114 Off,
1 - 999
Off Parameter 114 determines the amount of water/ energy that
one pulse signifies. The unit of the amount (pulse unit) is
determined by the set-up of parameter 115
Off: Pulse communication is not being used for the channel.
Example Channel I, parameter 115 = 4, parameter 114 = 200. This setting means: Channel I
is being used for pulse communication of measured flow data. The flow data lies in
the range 0.0 – 299.9 m
3
/h and l pulse signifies a water flow of 200 l.
4.1.2 Setting time constants
When the ECL Comfort 300 CPU receives flow/energy data, it will apply some
filtering to the received data. Limitation of flow/energy consumption takes place by
integral control. For both processes, i.e. the filtering of the received data and the
integral control, the ECL Comfort 300 needs a time constant. These time constants
are determined by parameters 113 and 112, respectively.
Parameter 112 and 113 can be set for both circuit I and II. When setting
parameters, you change between circuits I and II by pressing
.
Param.
No.
Range Default
value
Description
112 1 – 250 40 Parameter 112 is a time constant for integral control of flow/
energy limitation. A high value of 112 means fast control, a low
value means slow (more stable) control
113 1 – 250 2 Parameter 113 is a time constant for digital filtering of flow/
energy input data. When parameter 113 is set to 1, no filtering
is applied. A high value of 113 means that a degree of filtering
applied
8 VI.BB.01.02 / 087R9705 © Danfoss 02/04 BC-TM
ECL Comfort 300 parameters
4.1.3 Setting the flow or energy reference
Before the ECL Comfort 300 can perform flow/energy limitation, a reference flow
or energy value must be entered for each circuit where flow/energy limiting should
be active. The flow/energy reference value works differently for a heating circuit as
for a hot-water circuit.
Heating circuit For a heating circuit (circuit I or II of the ECL Comfort 300), the flow/energy
reference is determined indirectly by the ECL Comfort 300, in accordance with the
actual outdoor temperature. For a heating circuit, the ECL Comfort 300 performs
an outdoor temperature dependent flow/energy limitation. The ECL Comfort 300
User’s Guide (‘grey’ section, Service Parameters) describes the functions and set-
up of return temperature limitation in a heating circuit. Flow/energy limitation
works according to the same principle. The flow/energy reference is determined
according to an outdoor temperature curve:
Figure 4: Principle of the flow/energy limitation
The maximum and minimum curves shown in Figure 4 are determined by the
parameters 116 and 117, respectively. The unit depends on the unit chosen in
parameter 115. The corresponding x-coordinates are identical to the x-coordinates
of the return temperature-limitation curve. We refer to the ECL Comfort 300
User’s Guide for the reading of the x-coordinates.
Parameter 111 is a calculated outdoor compensated value. If the limitation function
has to be independent of the outdoor temperature, parameters 116 and 117 have to
be equal.
Param.
No.
Range Default
value
Description
116 * 2999 Parameter 116 is the maximum y-coordinate of the flow/
energy limiting curve
117 * 2999 Parameter 117 is the minimum y-coordinate of the flow/
energy limiting curve
* Depends of the settings of parameter 115
BC-TM VI.BB.O1.02 / 087R9705 © Danfoss 02/04 9
ECL Comfort 300 parameters
Hot-water circuit For the hot-water circuit, a constant flow/energy limitation value is entered directly
into parameter 111. The unit depends on the unit chosen in parameter 115.
4.2 Reading measured data
You display the data read by the ECL Comfort 300 from the attached heat meter(s)
by reading parameters 110 for circuit I and II. When reading the parameter, you
change between circuits I and II by pressing
.
Param.
No.
Range Default
value
Description
110 * 0 The actual flow or energy measurement. The unit depends
on the setting of parameter 115 (see page 8)
* Depends on the settings of parameter 115
10 VI.BB.01.02 / 087R9705 © Danfoss 02/04 BC-TM
Troubleshooting
5 Troubleshooting
5.1 What to expect
After the connector for the ECA 88 pulse module has been installed and cables are
connected as described as in chapter 3 and set-up as described in chapter 4, the
measured flow or energy data should become available in parameter 110 (circuit I
and/or II), as described above. However, you must take into consideration that:
§ The ECA 88 pulse module exchanges data with the ECL Comfort 300’s CPU
once every 30 seconds
When the pulse communication is used, you may experience deviations between
the data displayed by the heat or flow meter and the data displayed in parameter
110 by the ECL Comfort 300 when the flow or energy consumption is low, i.e. is
much lower than the reference value. This phenomenon is due to the method used
by the ECL Comfort 300 to calculate the measurement time for pulse
communication.
Bear in mind that data measured by ECL Comfort 300 deviates from the values
reported by the flow/energy meter at low flow/energy values, and that this would
not influence the function of the flow/energy limitation. The ECL Comfort 300
measures correctly in intervals symmetrically around the reference value.
5.1.1 Update time
The maximum update time is 2 x the sample_time:
111:
36114:
_
param
faktorparam
timeSample
××
= sec.
Param. 115
1 2 3 4 5 6 7 8 9 10
Factor
1 1000 0.001 1 10 1000 1 10 1000 1
Param. 115
11 12 13 14 15
Factor
10 1000 1 10 1000
The Sample_time will always be between 15 and 600 sec.
Notice that the filter in param. 113 influences the update time.
Example
Param. Value
111 200,0
114 200
115 4
.sec36_
0,200
136200
_
=
Þ
××
=
timeSample
timeSample
BC-TM VI.BB.O1.02 / 087R9705 © Danfoss 02/04 11
Troubleshooting
Update time:
If flow/energy value ≥ reference value: 36 sec.
If flow/energy value << reference value: 72 sec.
5.2 Error conditions
5.2.1 Symptoms
Symptoms of an error condition may be:
§ The ECL Comfort 300 consistently reports 0 for parameter 110 – whereas the
flow/energy meter reports a different value (i.e. that water flow or energy
consumption is taking place).
§ The value reported by the ECL Comfort 300 deviates significantly from the
value reported by the flow/energy meter – when pulse communication is used
at data values close to the flow/energy reference.
5.2.2 Causes
The cause for failure may be due to:
§ The flow/energy meter
§ The connections
§ The ECA 88 pulse module
§ The ECL Comfort 300
Flow/ energy meter To eliminate errors due to the operation of the flow/energy meter, check that the
device is properly connected to the communications line and set up according to
the instruction of the manufacturer.
Connection To eliminate errors due to the connection, you should:
Check that the cables used meet the specifications given on page 6, that they are
properly connected both to the ECL Comfort 300 and to the flow/energy meter and
that the cables themselves are without any visible sign of damage.
ECA 88 If an ECL Comfort 300 includes an ECA 88 module, you should be able to access
the parameters described in chapter 4. If the parameters are not accessible, the ECA
88 module is not communicating properly with the ECL Comfort 300.
Check the software version of the ECL Comfort 300
1
. The software must be
version 1.08 or later. If not, the ECA 88 module is installed after delivery from
Danfoss A/S and the warranty is no longer valid.
ECL Comfort 300 If data are displayed (parameter 110) but the values seem to be incorrect, check the
set-up of the ECL Comfort 300 parameters 111-115. See chapter 7.
1
You can see the software version of the ECL Comfort during start-up or in line 9 (the yellow side of ECL card must face
you), at lower right-hand corner. The ECL Comfort User’s Guide provides exact instructions.
12 VI.BB.01.02 / 087R9705 © Danfoss 02/04 BC-TM
/
