Danfoss ECL 2000 Operating instructions

7HFKQLFDO0DQXDO

(&/

 (8*

7HFKQLFDO0DQXDO

(&/

Danfoss A/S

EU.65.D1.02

ECL 2000

EU.65.G1.02

LL

Danfoss can accept no responsibility for possible errors in catalogues, brochures and other printed materials.

Danfoss reserves the right to alter its products without notice. This also applies to products already on order pro-

vided that such alterations can be made without subsequent changes being necessary in specifications already

agreed. All trademarks in this material are property of the respective companies. Danfoss and the Danfoss logo-

type are trademarks of Danfoss A/S.

Danfoss A/S ID: EU.65.G1.02

DK-6430 Nordborg Date: September 1998

Denmark

Phone: +45 74 88 22 22

Contents

EU.65.G1.02

LLL

7$%/(2)&217(176

 ,1752'8&7,21 

1.1 Scope 1

1.2 About this Manual 1

1.3 Typographical Conventions 1

1.4 Overview of Components 2

 (&/+$5':$5( 

2.1 Enclosure 3

2.1.1 Top Part 3

2.1.2 Inside the Enclosure 5

Opening the Enclosure 5

Removing the I/O Board 6

Disconnecting Ribbon Cables 6

Removing the CPU Board 7

2.1.3 Bottom Part 7

2.2 Base Plate and Case 8

2.2.1 Base Plate 8

2.2.2 Terminal Blocks 9

2.2.3 Case 10

2.3 Maintenance 10

2.4 Electronics 11

2.4.1 I/O Board 11

I/O Board Type 1 11

I/O Board Type 2 17

2.4.2 CPU Board 20

2.4.3 LON Board 21

2.4.4 Graphical Display 22

 (&/$33/,&$7,216 

3.1 Diagram Symbols 24

3.2 Application 1 25

3.3 Application 2 27

3.4 Application 3 29

3.5 Application 4 31

3.6 Application 5 32

3.7 Application 6 34

3.8 Application 7 36

3.9 Application 8 37

3.10 Application 9 39

3.11 Application 10 41

3.12 Application 11 43

3.13 Application 12 46

3.14 Application 13 47

3.15 Application 14 48

3.16 Application 15 52

Contents

EU.65.G1.02

LY

3.17 Application 16 53

3.18 Application 17 55

 +($7&,5&8,7&21752/ 

4.1 Heat Circuit Types 57

4.1.1 Heat Circuit Type a 57

4.1.2 Heat Circuit Type b 58

4.1.3 Heat Circuit Type c 59

4.1.4 Heat Circuit Type d 60

4.2 General Heat Circuit Functions 61

4.2.1 Calculating the Reference Flow Temperature 61

No Room Temperature Sensor Installed 61

Room Temperature Sensor Installed 62

4.2.2 Return Temperature Limiting 68

4.2.3 Summer Cut-off 69

4.2.4 Optimizer 71

Function of the Optimizer 71

4.2.5 Motor Control (PI-Control) 74

Voltage Control (ECL 2000 Type 2) 74

3-Point Control (ECL 2000 Type 1) 75

Running Time of Motor Valve 78

4.2.6 Pump Control 78

Overrun 78

Night Stop 79

4.2.7 Remote Control 80

Connecting the ESMF 81

4.2.8 Frost Protection 82

4.2.9 Limiter 82

Flow Limiter 83

Flow Cut-off 84

Energy Limiter 84

Wind Velocity Limiter 85

Sun Intensity Limiter 86

Universal Limiter 87

 +27:$7(5&,5&8,7&21752/ 

5.1 Hot-Water Circuit Types 89

5.1.1 Hot-Water Circuit Type A 89

5.1.2 Hot-Water Circuit Type B 90

5.1.3 Hot-Water Circuit Type C 91

5.1.4 Hot-Water Circuit Type D 93

5.1.5 Hot-Water Circuit Type E 95

5.1.6 Hot-Water Circuit Type F 97

5.1.7 Hot-Water Circuit Type G 99

5.1.8 Hot-Water Circuit Type H 101

5.1.9 Hot-Water Circuit Type I 103

5.1.10Hot-Water Circuit Type J 105

5.1.11Hot-Water Circuit Type K 107

5.1.12Hot-Water Circuit Type L 109

Contents

EU.65.G1.02

Y

5.2 General Hot-Water Functions 110

5.2.1 Anti-bacteria function 110

5.2.2 Return Temperature Limiting 110

5.2.3 Motor Control (PI-control) 111

5.2.4 Limiter 111

Flow Limiter 111

Energy Limiter 112

Universal Limiter 112

 &20021)81&7,216 

6.1 Alarm 113

6.1.1 Alarm Setup 113

6.1.2 Alarm Status 115

6.2 Sensor Time Constants 115

6.3 Software Version 116

5()(5(1&(6 

,1'(; 

Contents

EU.65.G1.02

YL

Introduction

EU.65.G1.02



 ,1752'8&7,21

 6FRSH

This Technical Manual is for the ECL 2000 district heating temperature controller.

The manual is intended for project and service engineers, as well as sales staff

seeking detailed information about the controller. The manual describes:

• ECL 2000 hardware

• ECL 2000 automatic control procedures.

Detailed operating instructions are not included in this manual. These are provided

in the ECL 2000 User’s Guide (ref. [3]).

Instructions for installing the controller are provided in the ECL 2000 Installation

Guide (ref. [2]).

You may also want to refer to the overview of user displays and service menus in-

cluded in the appendix of the ECL 2000 User’s Guide and Installation Guide.

 $ERXWWKLV0DQXDO

Chapter 2 describes the ECL 2000 hardware: The enclosure and mounting appli-

ances, as well as the printed circuit boards.

Chapter 3 briefly describes each of the ECL 2000’s pre-programmed applications.

Chapter 4 describes heat circuit control.

Chapter 5 describes hot-water circuit control.

Chapter 6 describes the Common Functions of the ECL 2000’s service menus.

At the end of the manual, you find a list of references and an index.

 7\SRJUDSKLFDO&RQYHQWLRQV

The following conventions are used:

%ROG Terms that are found in display pictures appear in bold when mentioned in the

text.

,WDOLF Introduces new terms.

1RWH

Indicates a note to which you should pay attention.

Introduction

EU.65.G1.02



 2YHUYLHZRI&RPSRQHQWV

The list below provides an overview of the various ECL 2000 products including

code numbers. In the following chapters, the individual products and their instal-

lation are described. See also data sheet on ECL 2000, ref. [4].

&RQWUROOHUV 'HVFULSWLRQ &RGH1R

ECL 2000 Temperature controller 230V AC. Type 1 without LON communication 087B8000

ECL 2000 Temperature controller 230V AC. Type 1 with LON communication 087B8001

ECL 2000 Temperature controller 24V AC. Type 1 without LON communication 087B8002

ECL 2000 Temperature controller 24V AC. Type 1 with LON communication 087B8003

ECL 2000 Temperature controller 24V AC. Type 2 without LON communication 087B8006

ECL 2000 Temperature controller 24V AC. Type 2 with LON communication 087B8007

0RXQWLQJ 'HVFULSWLRQ &RGH1R

Base plate Base plate including terminal blocks and case in black plastic 087B8099

Panel spring acces-

sory

4 retainer springs and two terminal blocks. Used when controller is placed in

a panel cut-out.

087B3076

DIN rail spring

accessory

Spring for DIN rail mounting 087B3077

IP65 Mounting kit IP65 protection 087B3064

6HQVRUV 'HVFULSWLRQ &RGH1R

ESMA Pt 1000 flow temperature sensor, surface type, for mounting on pipe

Provided with screw terminals

084N1004

ESMU Pt 1000 flow temperature sensor, 100 mm immersion type, copper 084N1052

ESMU Pt 1000 flow temperature sensor, 100 mm immersion type, stainless steel 084N1050

ESMU Pt 1000 flow temperature sensor, 250 mm immersion type, copper 084N1053

ESMU Pt 1000 flow temperature sensor, 250 mm immersion type, stainless steel 084N1051

ESMT Pt 1000 outdoor temperature sensor 084N1012

ESMR Pt 1000 room temperature sensor 084N1016

ESMF

Remote control including room temperature sensor. Displacement:

±

10 K

087B3132

ESMB Pt 1000 hot water temperature sensor, cable type 087N0010

ESMC Pt 1000 flow temperature sensor, surface type, for mounting on pipe

Provided with 2 m wire connection

087N0011

2WKHU 'HVFULSWLRQ &RGH1R

LON LON communication module to be fitted in controller 087B8098

7DEOH(&/FRPSRQHQWVDQGRUGHUQXPEHUV

ECL 2000 Hardware

EU.65.G1.02



 (&/+$5':$5(

 (QFORVXUH

Figure 1 shows the ECL 2000 enclosure.

)LJXUH7KH(&/HQFORVXUH

The ECL 2000 enclosure consists of two parts: a top part and a bottom part. These

are described in the following sections.

 7RS3DUW

Figure 2 below and Figure 3 on page 4 show the top part of the ECL 2000 enclo-

sure.

)LJXUH7KHWRSSDUWRIWKH(&/HQFORVXUHFORVHG

ECL 2000 Hardware

EU.65.G1.02



The service terminal connector shown in Figure 3 is an EIA 232 interface of type

RJ45 (modular jack).

)LJXUH7KHWRSSDUWRIWKH(&/HQFORVXUHRSHQ

When the ECL 2000 is delivered, the service terminal connector is protected by a

small cover plate. This cover plate should be left in place during normal operation

of the controller.

To remove the cover and access the connector, carefully lift the right-hand side of

the cover plate with the tip of a screwdriver, at the same time sliding the cover

plate to the right. See Figure 4.

)LJXUH5HPRYLQJWKHFRYHUSODWHIURPWKHVHUYLFHWHUPLQDOFRQQHFWRU

Service terminal connector

Keyboard 1

Keyboard 2

Fixing screw

ECL 2000 Hardware

EU.65.G1.02



 ,QVLGHWKH(QFORVXUH

The diagram in Figure 5 illustrates the components of the ECL 2000: Enclosure

and printed circuit boards (the abbreviation ‘PCB’ is used in the following text).

)LJXUH,QVLGHWKH(&/

2SHQLQJWKH(QFORVXUH

To open the cabinet, you remove the bottom part of the enclosure, taking out the

front panel and PCBs as one block.

1RWH

Before opening the ECL 2000’s enclosure, make sure that the controller is pow-

ered off.

 Ensure that the fixing screw is removed from the front panel (see

Figure 3, page 4).

The bottom part of the enclosure is fixed to the top part by two sets of release ac-

tuators on either side of the enclosure.

ECL 2000 Hardware

EU.65.G1.02



 Insert the tip of a screwdriver between the top part and the bottom part,

for example on the left side and carefully lift the edge of the front panel

out and up to release the actuators.

 Repeat on the opposite side of the enclosure.

Now the bottom part can be removed by carefully sliding it off across the connec-

tors on the I/O board.

5HPRYLQJWKH,2%RDUG

When the bottom part of the enclosure is removed, and the controller is placed in a

horizontal position with its front panel down, the I/O board is upward (see

Figure 5, page 5). A ribbon cable connects the I/O board to the CPU board. How-

ever, it is possible to remove the I/O board without loosening the ribbon cable:

The I/O board is mounted on three guide pins placed through holes drilled in the

printed circuit board, 1 in the middle and 1 on either side of the board (see

Figure 7, page 7).

 Carefully press the top of the 2 guide pins down through the holes of the

printed circuit board while lifting the I/O board.

 Turn over the I/O board so that it is placed next to the CPU board.

Now you can get access to the CPU board to replace the EPROM, for example (see

Figure 19, page 20).

'LVFRQQHFWLQJ5LEERQ&DEOHV

Figure 6 shows one of the ECL 2000’s ribbon cable connectors.

)LJXUH5LEERQFDEOHFRQQHFWRU

A connector lock, which is provided with one release key on either side, secures

the ribbon cable. If necessary, the ribbon cable can be removed:

 Pull the keys in the direction indicated by the arrows in Figure 6. The

best thing is to release both keys at once.

The ribbon cable is now loose and can be pulled out in the direction of the arrows.

To connect the ribbon cable again:

Connector

Ribbon cable

Connector lock

ECL 2000 Hardware

EU.65.G1.02



 Insert the cable in the connector.

 Push the keys in the opposite direction of the arrows in Figure 6. The

best thing is to push both keys at once.

5HPRYLQJWKH&38%RDUG

The CPU board is secured to the front panel by 3 release actuators positioned in

the corners of the board. Moreover, the board is secured by a release actuator

placed through a rectangular hole approximately in the centre of the board. See

Figure 7.

)LJXUH7KH&38ERDUGPRXQWHGRQWKHUHDUVLGHRIWKHFRQWUROOHU¶VIURQWSDQHO

The CPU board is removed from the front panel in the following way:

 Remove the ribbon cable to the I/O board, as well as the two ribbon ca-

bles connecting the CPU board to the front panel (see instructions

page 6).

 Carefully pull each release actuator in the corners outwards, and disen-

gage the CPU board from the front panel.

 %RWWRP3DUW

Figure 13 (page 12), Figure 14 (page 13) and Figure 18 (page 18) show the rear

panels of the ECL 2000 Type 1 and 2, including the EIA 232 modem connector.

ECL 2000 Hardware

EU.65.G1.02



 %DVH3ODWHDQG&DVH

When the ECL 2000 is mounted on a wall, a base plate and case (Order no.

087B8099) are used.

 %DVH3ODWH

Figure 8 shows the base plate.

)LJXUH%DVHSODWH

The bottom and rear sides of the base plate are provided with a number of knock-

outs, which are removed to allow cable entry. Inside the case, cables are connected

to two terminal blocks. See following pages for further details.

ECL 2000 Hardware

EU.65.G1.02



 7HUPLQDO%ORFNV

Two terminal blocks with screw terminals are used to connect cables to the con-

troller. The terminal blocks can be mounted on the inside of the base plate, as il-

lustrated in Figure 9.

)LJXUH%DVHSODWHZLWKWHUPLQDOEORFNVIDVWHQHG

If the ECL 2000 is mounted in a panel, the case and base plate are not used. In this

case, cables are connected to a set of loose terminal blocks, which are then

mounted on the controller’s rear side, as illustrated in Figure 10.

)LJXUH0RXQWLQJWHUPLQDOVWULSVRQWKHFRQWUROOHU¶VUHDUVLGH

Terminal block

ECL 2000 Hardware

EU.65.G1.02



 &DVH

Figure 11 shows the case used for mounting the ECL 2000 on a wall.

)LJXUH7KH(&/LVLQVHUWHGLQWKHFDVH

 0DLQWHQDQFH

The enclosure of the ECL2000 can be cleaned using a mild detergent applied to a

damp cloth.

ECL 2000 Hardware

EU.65.G1.02



 (OHFWURQLFV

 ,2%RDUG

The I/O board of the ECL 2000 is equipped with a microprocessor which handles

all tasks related to I/O. The following functions are located on this board:

• Sensor input

• Motor valve control output

• Power supply

• EIA232 interface.

The ECL 2000 exists in two versions: Type 1 and type 2. The type of the controller

is determined by the I/O board: An ECL 2000 Type 1 has a type 1 I/O board, a

type 2 has a type 2 I/O board.

There are three types of I/O board:

• A type 1 I/O board for 230 V power supply

• A type 1 I/O board for 24 V power supply

• The type 2 I/O board for 24 power supply.

,2%RDUG7\SH

Figure 12 is a schematic diagram of the type 1 I/O board seen from the controller’s

rear (component side).

)LJXUH,2ERDUGW\SH

Connector for ribbon cable

to CPU board

Connector for modem

(EIA232) cable

Transformer

ECL 2000 Hardware

EU.65.G1.02



1RWH

The purpose of the diagram in Figure 12 is to help you recognize the Type 1 I/O

board. Thus, the diagram does not show all of the components on the I/O board.

The side of the transformer is provided with a label stating the supply voltage (230

V or 24 V) required for the PCB in question.

The diagram in Figure 13 shows the rear panel of an ECL 2000 Type 1 for 230 V

power supply. Table 2 gives additional detail about inputs and outputs.

)LJXUH5HDUSDQHORIWKH(&/7\SH9VKRZLQJWKHSLQDVVLJQPHQWRIWKH,2ERDUG

,2 'HVFULSWLRQ 0D[/RDG

I Relay output (pump), 230V AC (NO) 4 (2)A 250V AC

1

II Relay output (pump), 230V AC (NO) 4 (2)A 250V AC

III Relay output (pump), 230V AC (NO) 4 (2)A 250V AC

I

3-point output (gear motor for valve) 0.15 A/250V AC

II

3-point output (gear motor for valve) 0.15 A/250V AC

S1-S7 Input: Pt 1000 temperature sensor –

S8-S9 Input: Pt 1000, ESMF, 0-10V, pulse or digital –

7DEOH,2FRQILJXUDWLRQRIWKH(&/7\SH9

1

4 A at resistive load, 2 A at inductive load.

Page is loading ...

Danfoss ECL 2000 Operating instructions

Danfoss ECL 2000 Operating instructions

Related papers

Other documents