Danfoss ECL Comfort 300 incl. ECA 88 Operating instructions

Brand: Danfoss

Model: ECL Comfort 300 incl. ECA 88

Type: Operating instructions

Danfoss ECL Comfort 300 incl. ECA 88 pulse module allows you to monitor and limit flow or energy consumption in your district heating system. You can use the measured values to perform outdoor temperature-dependent flow limitation or energy limitation. It supports voltage pulse communication in the frequency range 0 – 200 Hz, and 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.

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

MD meter with external supply

Danfoss InfoCal

Pulse output from InfoCal

Danfoss MD-meter

and Danfoss InfoCal

MD meter supplied by InfoCal

Passive with MD pulses.

Danfoss CALSTREEM™

Pulse output from CALSTREEM

Kamstrup MULTICAL®III

Pulse output from MULTICAL®III

Landis & Staefa WZD-PC

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

/h ml

4 0.0 – 299.9 m

/h l

5 0.0 – 299.9 m

/h x 10 l

6 0 – 2999 m

/h m

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

/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

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

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

××

timeSample

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

. 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.

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.

Danfoss ECL Comfort 300 incl. ECA 88 Operating instructions

Danfoss ECL Comfort 300 incl. ECA 88 Operating instructions

Danfoss ECL Comfort 300 incl. ECA 88 Operating instructions

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