Eliwell ECH 200BD ""Adaptive User Manual

ECH 200BD "Adaptive" Electronic Controller for mono and bicompressor Chillers with Adaptive Algorithm

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1 SUMMARY

1 Summary................................................................................................................................................................... 2

2 How to use this manual ........................................................................................................................................ 5

3 Introduction ............................................................................................................................................................. 6

3.1 Models available............................................................................................................................................................................... 6

4 Installation ............................................................................................................................................................... 8

4.1 Connection diagrams ...................................................................................................................................................................... 8

4.2 Configuration of analogue inputs ................................................................................................................................................ 9

4.3 Configuration of digital inputs.................................................................................................................................................... 10

4.4 Configuration of outputs.............................................................................................................................................................. 10

4.4.1 Relays................................................................................................................................................................................................................................................... 11

4.4.2 Triac ..................................................................................................................................................................................................................................................... 11

4.4.3 Alarm...................................................................................................................................................................................................................................................12

4.4.4 Fan module pilot output ................................................................................................................................................................................................................12

4.4.5 Optional output ................................................................................................................................................................................................................................ 12

4.4.6 Remote keyboard output ............................................................................................................................................................................................................... 12

4.5 Physical quantities and units of measurement........................................................................................................................ 13

4.5.1 Temperature- or pressure-based operation............................................................................................................................................................................... 13

4.5.2 Units of measurement.....................................................................................................................................................................................................................13

4.6 Serial outputs ..................................................................................................................................................................................14

4.6.1 Copy card device...............................................................................................................................................................................................................................14

5 User interface......................................................................................................................................................... 15

5.1 Keys.................................................................................................................................................................................................... 15

5.2 Displays.............................................................................................................................................................................................15

5.2.1 Display.................................................................................................................................................................................................................................................15

5.2.2 SET display for air-air machines (for models Ech 2xxB only) ................................................................................................................................................ 15

5.2.3 Led ........................................................................................................................................................................................................................................................ 16

5.3 Remote keyboard............................................................................................................................................................................ 16

5.4 Parameter programming – Menu levels ...................................................................................................................................18

5.4.1 Visibility of parameters and sub-menus .....................................................................................................................................................................................20

6 System configuration........................................................................................................................................... 21

6.1 Compressors..................................................................................................................................................................................... 21

6.1.1 Compressor configuration..............................................................................................................................................................................................................21

6.1.2 Compressor on/off sequence .........................................................................................................................................................................................................21

6.1.3 Compressor timing ........................................................................................................................................................................................................................... 21

6.2 Condensation fan ........................................................................................................................................................................... 22

6.2.1 Fan configuration ............................................................................................................................................................................................................................. 22

6.2.2 DRV module ....................................................................................................................................................................................................................................... 23

6.3 Reversing valve................................................................................................................................................................................23

6.4 Hydraulic pump ..............................................................................................................................................................................23

6.5 Internal anti-freeze/supplementary electrical heaters ..........................................................................................................24

6.5.1 Supplementary electrical heaters................................................................................................................................................................................................. 25

6.6 External anti-freeze electrical heaters .......................................................................................................................................25

6.7 Boiler .................................................................................................................................................................................................25

7 Adaptive .................................................................................................................................................................. 26

7.1 Adaptive function........................................................................................................................................................................... 26

7.1.1 Adaptive function: regulator ......................................................................................................................................................................................................... 26

7.1.2 Set point offset (for ET<MT) .......................................................................................................................................................................................................... 26

7.1.3 Set point regression (for ET≥MT) ................................................................................................................................................................................................ 27

7.1.4 Protection in Cooling mode........................................................................................................................................................................................................... 28

7.1.5 Protection in Heating mode ..........................................................................................................................................................................................................28

7.1.6 Notes.................................................................................................................................................................................................................................................... 28

7.1.7 Example .............................................................................................................................................................................................................................................. 28

7.2 Fan control in Defrosting mode .................................................................................................................................................. 29

7.3 Antifreeze function for units with heat pump.......................................................................................................................... 29

8 Temperature control functions .........................................................................................................................30

8.1 Selection of operating mode from analogue input................................................................................................................30

8.2 Setting set points ............................................................................................................................................................................ 31

8.3

Dynamic set point ..........................................................................................................................................................................31

8.4 Switching from digital input........................................................................................................................................................ 33

8.5 Load control..................................................................................................................................................................................... 33

8.5.1 Compressor control – regulation algorithm.............................................................................................................................................................................. 33

8.5.2 Condensation fan control .............................................................................................................................................................................................................. 34

8.5.3 Reversing valve control ...................................................................................................................................................................................................................36

8.5.4 Hydraulic pump control.................................................................................................................................................................................................................. 36

8.5.5 Anti-freeze/supplementary electrical heater control .............................................................................................................................................................. 36

8.5.6 External anti-freeze electrical heater control............................................................................................................................................................................ 37

8.5.7 Supplementary electrical heater control.................................................................................................................................................................................... 37

8.5.8 Boiler control ..................................................................................................................................................................................................................................... 37

9 Functions.................................................................................................................................................................38

9.1 Recording hours of operation......................................................................................................................................................38

9.2 Defrosting.........................................................................................................................................................................................38

9.2.1 Defrost start .......................................................................................................................................................................................................................................38

9.2.2 Defrost end ......................................................................................................................................................................................................................................... 39

9.2.3 Counter mode.................................................................................................................................................................................................................................... 39

9.2.4 Start defrost temperature compensation...................................................................................................................................................................................39

9.3 Power failure.................................................................................................................................................................................... 40

10 Diagnostics ............................................................................................................................................................. 41

10.1 List of alarms ................................................................................................................................................................................... 41

10.1.1 TABLE OF DIGITAL ALARMS: .................................................................................................................................................................................................... 45

10.1.2 TABLE OF ANALOGUE ALARMS: ............................................................................................................................................................................................. 45

11 Parameters .............................................................................................................................................................46

11.1 Description of parameters............................................................................................................................................................ 46

11.1.1 Configuration parameters ........................................................................................................................................................................................................46

11.1.2 Compressor parameters (CP) ................................................................................................................................................................................................... 48

11.1.3 Fan control parameters (FAN) ................................................................................................................................................................................................ 48

11.1.4 Alarm parameters (ALL)............................................................................................................................................................................................................ 49

11.1.5 Anti-freeze/boiler parameters (FRO)......................................................................................................................................................................................50

11.1.6 Defrost parameters (DFR)......................................................................................................................................................................................................... 51

11.2 Table of parameters....................................................................................................................................................................... 51

12 Technical features................................................................................................................................................. 55

12.1 Technical information...................................................................................................................................................................55

12.2 Electromagnetic characteristic.................................................................................................................................................... 55

12.3 Dimensions.......................................................................................................................................................................................55

12.4 Regulations ...................................................................................................................................................................................... 55

13 Use of the device ................................................................................................................................................... 57

13.1 Permitted use................................................................................................................................................................................... 57

13.2 Forbidden use .................................................................................................................................................................................. 57

14 Responsibility and residual risks........................................................................................................................ 58

15 Disclaimer ...............................................................................................................................................................59

16 Examples of air conditioning circuits............................................................................................................... 60

16.1 Air-water chiller 1 compressor ....................................................................................................................................................60

16.2 Air-water chiller 2 compressor ....................................................................................................................................................61

16.3 Water-water Chiller 1 compressor.............................................................................................................................................. 62

16.4 Water-water Chiller 2 compressor.............................................................................................................................................. 63

16.5 Air-water heat pump 1 compressor ........................................................................................................................................... 64

16.6 Air-water heat pump 2 compressors.......................................................................................................................................... 65

16.7 Water-water heat pump 1 compressor ..................................................................................................................................... 66

16.8 Water-water heat pump 2 compressors.................................................................................................................................... 67

17 Glossary ...................................................................................................................................................................68

18 Appendix .................................................................................................................................................................68

18.1 CF Modules ......................................................................................................................................................................................70

18.1.1 CF modules: technical data......................................................................................................................................................................................................70

18.1.2 CF modules: connections .......................................................................................................................................................................................................... 70

18.1.3 CF modules: mechanical assembly......................................................................................................................................................................................... 71

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18.2

Copy Card......................................................................................................................................................................................... 72

18.3 EMC filter..........................................................................................................................................................................................72

18.4 Param Manager.............................................................................................................................................................................. 72

18.4.1 PCInterface interface module ..................................................................................................................................................................................................73

18.5 Sonde................................................................................................................................................................................................. 73

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References

Cross references

Icons for emphasis

2 HOW TO USE THIS MANUAL

This manual is designed to permit quick, easy reference with the following features:

References column:

A column to the left of the text contains references to subjects discussed in the text to help you locate the information you need quickly and easily.

Cross references:

All words written in italics are referenced in the subject index to help you find the page containing details on this subject; supposing you read the following text: ”when the alarm is triggered, the compressors will be shut down” The italics mean that you will find a reference to the page on the topic of compressors listed under the item compressors in the index. If you are consulting the manual “on-line” (using a computer), words which appear in italics are hyperlinks: just click on a word in italics with the mouse to go directly to the part of the manual that discusses this topic.

Some segments of text are marked by icons appearing in the references column with the meanings specified below:

Take note: information on the topic under discussion which the user ought to keep in mind

Tip: a recommendation which may help the user to understand and make use of the information supplied on the topic

under discussion.

Warning! : information which is essential for preventing negative consequences for the system or a hazard to personnel, instruments, data, etc., and which users MUST read with care.

Ech 200 Family

3 INTRODUCTION

Ech 200 is a compact device that permits control of air conditioning units of the following types:

• air-air

• air-water

• water-water

• condensing units

single-circuit, with 1 or 2 compressors (steps). It is possible to control condensation fan speed proportionately for currents of up to 2 A without using external devices.

Main characteristics:

• Temperature control based on inlet or outlet probe, depending on the type of machine and its configuration

• Condensation control

• Input may be configured for an NTC temperature probe or for a 4...20 mA signal (through parameters)

• Automatic change-over

• Boiler or supplementary electrical heater control for heating

• Internal fan control up to 3 steps in the air-air application

• Dynamic set point

• Parameter setting from the keyboard or through a personal computer

• Copy card for uploading and downloading parameter maps

• Remote keyboard (up to 100 m) which may be connected up directly without a serial interface

• 4-20 mA or 0-10 V output (optional internal card)

• User interface with a menu featuring 2 different levels of access through password management

• Interface menu may be fully configured from a PC.

3.1 Models available

The ECH 200 family’s models (base, keyboard and expansion) and a reference tabel containing the base parameters are illustrated below:

CH 200

Models available

Base

ECH210 BD

Expansion EXP200 is available for only model Ech 211.

Tastiera

EKW200

EW/S200

Espansione

EXP200

Base parameters

tabel

Model ECH 210 BD ECH 215 BD

Circuits 1 1

Application

Input/output

Features

Diagnostic

Compressors (in chiller) 2 2 Compressors (in heat pump) 1 2

Stages 1 1

Relays (2A 230 V~) 4 5 Triac (2A 230 V~) 1

Digital input 5 5 Analog output Analog input 4 4 Srew connectors • •

Remote keyboard • •

Remote on-off • • Heat pump control • • Defrost • • Condensing pressure control • • Water pump control • • Electric heater • •

Dynamic set point • •

Water free cooling • • Water flow alarm • • High pressure alarm • • Low pressure alarm • • Thermal compressor alarm • • Thermal fan alarm • • Antifreeze alarm • • High water temperature alarm • •

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Connection to

probe AI3

configured as NTC

4 INSTALLATION

Before proceeding with any operation, first make sure that you have connected up the power supply to the device through an appropriate external current transformer. Always follow these rules when connecting boards to one another and to the application:

• Never apply loads which exceed the limits set forth in these specifications to outputs;

• Always comply with connection diagrams when connecting up loads;

• To prevent electrical couplings, always wire low voltage loads separately from high voltage loads;

4.1 Connection diagrams

There are 2 ECH 200 BD models:

• ECH 210 BD: 2 step chiller + modbus

• ECH 215 BD: 2 step chiller + modbus

12AC AI1

12AC

GNDALL GND AI4 AI3 AI2

12DC TC ID5 ID4 ID3

ID2

ID1

D E F G H

Line

A: alarm output E: relay 1 B: LC filter F: relay 2 C: CF control G: relay 3 D: TK/relay 5 (only for 215B) H: relay 4

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Connection to

probe AI3

configured as

4..20mA C

12AC AI1

12AC

GNDALL GND AI4 AI3 AI2

12DC TC ID5 ID4 ID3

ID2

ID1

D E F G H

Line

Instrument configuration is determined by the values of the parameters associated with inputs and outputs.

A: alarm output E: relay 1 B: LC filter F: relay 2 C: CF control G: relay 3 D: TK/relay 5 (only for 215 BD) H: relay 4

Analogue inputs

Analogue inputs:

configuration

table

4.2 Configuration of analogue inputs

There are 4 analogue inputs:

• 3 NTC type temperature probes

• 1 input which may be configured for an NTC probe or a 4...20 mA signal.

The inputs, which shall henceforth be referred to as AI1…AI4, are configured as shown in the table below:

Pa. Description

Pa H05

Pa H06

Pa H07

Pa H08

Configuration of analogue input AI1

Configuration of analogue input AI2

Configuration of analogue input AI3

Configuration of analogue input AI4

0 1 2 3 4 5

Probe absent

NTC input Inlet water/air

NTC input Outlet water/air, antifreeze NTC input Condensation

NTC input Condensation

Digital input Request for

heating

Digital input, Request for

cooling

4...20 mA input for condensation

Multifunctional digital input

Value

Digital input Request for regulation algorithm Digital input for antifreeze

alarm

4...20 mA input for dynamic

set point

NTC input Outdoor temperature

NTC input Differential

Not permitted Not permitted

NTC input Anti-freeze for waterwater machines with automatic (internal) reversing of coolant gas

Not permitted

NTC probe Regulation alogorithm in

heating mode

for waterwater machines with manual reversal on water side Not permitted

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Digital inputs

Digital inputs:

polarity

Digital inputs:

configuration

table

If input AI3 is defined as a 4...20 mA input, the scale bottom value of the pressure input is also signfiicant: Pa H09, maximum input value; sets the corresponding value to a current of 20 mA

4.3 Configuration of digital inputs

There are 5 voltage-free digital inputs, which will henceforth be identified as ID1…ID5. AI1, AI2 e AI4 may be added to these if they are configured as digital inputs (through parameters Pa H05, Pa H06, and Pa

H08).

A total of 8 digital inputs is thus available.

The polarity of digital inputs is determined by the parameters listed below:

Parameter Description

Pa H10 Polarity of digital input ID1 Active if closed Active if open Pa H11 Polarity of digital input ID2 Active if closed Active if open Pa H12 Polarity of digital input ID3 Active if closed Active if open Pa H13 Polarity of digital input ID4 Active if closed Active if open Pa H14 Polarity of digital input ID5 Active if closed Active if open Pa H15 Polarity of input AI1 (configured as digital) Active if closed Active if open Pa H16 Polarity of input AI2 (configured as digital) Active if closed Active if open Pa H17 Polarity of input AI4 (configured as digital) Active if closed Active if open

Inputs ID1 and ID2 cannot be configured and fulfill the following functions:

• ID1 : High pressure input

• ID2 : Low pressure input

The functions of the other inputs may be configured using parameters:

• AI1, AI2: (Refer to Analogue inputs: configuration table)

• ID3, ID4, ID5 and AI4: as shown in the table below

Digital input

configuration parameters

Configuration parameter ID3

Configuration parameter ID4

Configuration parameter ID5

Configuration parameter AI4

If more than one of the parameters appearing in table 3 is configured with the same value, the function will be called up in response to at least one of the inputs.

Parameter code

Pa H18 Thermal

Pa H19 Thermal

Pa H20 Thermal

Pa H21 Thermal

0 1 2 3 4 5 6

switch compressor 1

Thermal switch fan

Thermal switch fan Thermal switch fan

Thermal switch fan

Flow switch

Value

Remote heat cool

Remote heat cool Remote heat cool

Remote heat cool

Value

0 1

Remote On-off

Thermal switch compressor 2

Thermal switch compressor 2 Thermal switch compressor 2

Thermal switch compressor 2

Request step 2

4.4 Configuration of outputs

Outputs

The table below shows the outputs depending on the model with the symbols used in the labels that are associated to the instrument and that will be shown next to the tabel.

Model

N° Symbol Capacity N° Symbol Capacity N° Symbol N° Symbol N° Symbol N° Symbol N° Symbol

ECH 210 BD 4 NO1..NO4 2A 1 TK 2A -- -- 1 KEYB 1 SERIAL 1 ALL 1 TC

ECH 215 BD 5 NO1..NO5 2A 0 -- -- 1

Relays Triac Optional Keyboard Serial Alarm

EXP

(digital) 1 KEYB 1 SERIAL 1 ALL -- --

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Fan

modules

piloting

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Labels

Relays:

configuration

table

12~ ALL GNDGND

RELAYS 2(2)A 250V~ TRIAC(TK) 2A 250V~

Model Ech 210 BD

12~ ALL GNDGND

RELAYS 2(2)A 250V~

Model Ech 215 BD

4.4.1 Relays

• NO1 - compressor, 2A resistive 250V~ (¼ HP at 240V~ , 1/8 HP 120V~ )

• NO2 - configurable, 2A resistive 250V~ (¼ HP at 240V~ , 1/8 HP 120V~ )

• NO3 - configurable, 2A resistive 250V~ (¼ HP at 240V~ , 1/8 HP 120V~ )

• NO4 - configurable, 2A resistive 250V~ (¼ HP at 240V~ , 1/8 HP 120V~ )

• NO5 – fan on-off, 2A resistive 250V~ (¼ HP at 240V~ , 1/8 HP 120V~ ) (for model ECH 215BD only)

Outputs NO2, NO3, NO4 may be configured as shown in the table below:

Pa. Description

Pa H22 Pa H23 Pa H24

If multiple outputs are configured to run the same resource, the outputs will be activated in parallel.

The maximum load present on the different outputs simultaneously must NOT exceed 8A

IA3 IA2 IA1IA4 ID3 ID2 ID1ID4ID5TC12~ 12=

Relay NO2

Pump Internal fan speed 1 Not permitted Not permitted configuration Relay NO3

Reversing valve Internal fan speed 3 Second compressor or

configuration Relay NO4 configuration

Anti-freeze electrical

heaters

SERIAL KEYB

NO1 NO2 NO3 NO4TK NNN

3456789 2 1

SERIAL KEYB

NO1 NO2 NO3 NO4NO5 NNN

3456789 2 1

EXP

Value

0 1 2 3

Not permitted

capacity step

Internal fan speed 2 Boiler Not permitted

TK output:

configuration

table

4.4.2 Triac

• TK – control of condensation fan or supplementary anti-freeze electric heaters.

For model Ech 210 BD the maximum current is 2A-250V~. For model Ech 210 BD NO downstream remote control of triac is permitted

For model Ech 215B NO triac is expected.

The TK output may be configured as shown below:

Pa. Description

Pa F01 Configuration of

TK output

Proportional

condensation fan control

0 1 2 3

ON-OFF temperature fan control

Value

Anti-freeze electric heaters for waterwater machines with gas reversal

ON-OFF fan control in response to compressor

Open collector

output

4.4.3 Alarm

ALL - 12-24 V~ output for alarm, maximum current 500 mA.

For models Ech 2xx BD the following parameters are available:

Pa H56 = determines the polarity of the alarm output:

• 0 = output is active (closed contact) when an alarm is active and when the machine is switched off.

• 1 = in the same conditions, the contact is open

Pa H57 = determines if the alarm is on with the machine on off from keyboard, with remote off and on stand-by

• 0 = alarm output not enabled in OFF or standby

• 1 = alarm output enabled in OFF or standby

The power supply to the alarm output must be kept separate from the controller power supply.

4.4.4 Fan module pilot output

TC - low voltage output piloting external fan control modules.

4.4.5 Optional output

EXP – optional internal output with configurable output.

For model Ech 210 BD the optional output is digital type and is open collector for piloting the second compressor’s relay:

REAR VIEW

4-20 mA or 0-10 V

output

Optional output:

configuration

table

CONN A

CONN B

SERIAL KEYB

EXP

EXTERNAL RELAY

Rear view: rear view of the control module External relay: external relay

For model Ech 215 BD the optional output is ANALOGUE type and can be used for piloting 4-20mA or 0-10V fans (through parameter Pa H25)

REAR VIEW

SERIAL KEYB

CONN A

CONN B

EXP

4-20 mA GND 0-10 V

Parameter Pa H25 must be configured to suit the version used, as shown in the table below:

Pa. Description

Pa H25 Optional output

configuration parameter

The analogue output value is directly proportionate to the external fan control. For example: if the external fan control has an output of 50%,

• with Pa H25= 1, the 4...20 mA output will have a value of 12 mA (50% calculated on the range 4…20), while the 0-10 V output will not be significant.

• with Pa H25= 2, the 0-10 V output will have a value of 5 V (50% calculated on the range 0…10), while the 4...20 mA output

will not be significant.

Rear view: rear view of the control module

0 1 2

Open Collector output for

compressor 2

Value

Proportional condensation

fan control, 4-20 mA

Proportional condensation

fan control, 0-10 V

4.4.6 Remote keyboard output

• KEYB - The keyboard output may be used for a remote keyboard.

Connect as shown in the diagram below:

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REAR VIEW

CONN A

REMOTE KEYBOARD

24 25 26

SERIAL KEYB

Temperature-

based operation

Pressure-based

operation

Temperature- or

pressure-based

operation:

configuration

table

CONN B

EXP

4.5 Physical quantities and units of measurement

4.5.1 Temperature- or pressure-based operation

Parameter Pa H49 may be used to select two different types of machine: operated on the basis of temperature or of pressure.

• If Pa H49= 0, parameters Pa H07=0 (probe AI3 absent), Pa F01 = 3 are forced (operation in response to a request from the compressor) .

• if Pa H49= 1 (temperature-based operation), parameters Pa HO7, F01 are forced as follows: H07= 1 (probe AI3 operating on the basis of temperature), F01= 3 (operation in response to a request from the compressor). During

defrosting, Pa d08 will be used as the defrost start temperature, and Pa d09 as the defrost end temperature.

REMOTE KEYBOARD: Remote keyboard

REAR VIEW: Rear view 24: blue 25: white 26: black

• if Pa H49= 2 (pressure-based operation), parameters Pa H07, F01 will be forced as follows: H07= 2 (probe AI3 operating on the basis of pressure), F01= 0 (proportional operation). During defrosting the following parameters are used: Pa d02 as the defrost start pressure and Pa d04 as the defrost end pressure.

• If Pa H49= 3, there are no constraints on the parameters.

Pa H49 Pa H07 Pa F01

0 0 probe AI3 absent 3 operation in response to a request from the

1 1 probe AI3 temperature 3 operation in response to a request from the

2 2 probe AI3 pressure 0 proportional operation 3 No constraints No constraints

compressor

4.5.2 Units of measurement

Control temperature may be displayed in:

• degrees °C, with decimal point

• degrees °F without decimal point.

Please remember the connection between the two measurement units: °F = °C x 9/5 + 32

The unit of measurement is determined by setting parameter H52:

Pa H52 Unit of

measurement

0 Degrees °C 1 Degrees °F

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Connection of

Copy Card

4.6 Serial outputs

There are 2 asynchronous outputs on the control:

• channel for serial communication with a personal computer through an Eliwell interface module

• channel for serial communication with a standard Eliwell keyboard. Power supply 12 VDC (2400, e, 8, 1).

4.6.1 Copy card device

Copy Card is a device that, if connected to the TTL serial port, allows to quickly program the instrument parameters. The

connection diagram is shown below:

Uploading and downloading data is made as follows:

UPLOAD (copy from INSTRUMENT TO COPY CARD)

This operation allows to download programming parameters to Copy Card.

Operations to be performed are:

• Insert the Copy Card when the instrument is on

• A password will be requested to perform this operation

• On the display, it is shown - - -

• Type the password value corresponding to the parameter value Pa H47

• Hold down both keys

• On uploading , a display appears - - -

• Disconnect Copy Card

Before performing UPLOAD, Copy Card is formatted. This operation causes all data entered in the Copy Card to be cleared. The formatting operation cannot be cancelled.

DOWNLOAD (copy from COPY CARD to INSTRUMENT)

This operation allows to upload programming parameters to instrument.

Operations to be performed are:

• Insert the Copy Card when the instrument is off

• Turn on the instrument

• Start uploading parameters into the instrument

• On uploading, Occ appears on the

• If the copy fails, Err appears on the display

• Turn off the instrument

• Disconnect Copy Card

• Turn on the instrument

A: Copy Card device B: connection through TTL cable C: channel for serial communication D: basic module

display

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Keyboard

mode

On-off – Reset

alarms

Mode and on-off

combinations

: set

5 USER INTERFACE

The interface on the front panel of the instrument can be used to carry out all the operations connected to the use of the instrument, and in particular to:

• Set operating mode

• Respond to alarm situations

• Check the state of resources

5.1 Keys

Selects operating mode:

• If the heating mode is enabled, each time the key is pressed the following sequence occurs:

stand-by Æ cooling Æ heating Æ stand-by

• if heating mode is not enabled:

stand-by Æ cooling Æ stand-by

In menu mode, this key acts as a SCROLL UP or UP key (increasing value).

Resets alarms, and turns the instrument on and off.

Press once to reset all manually reset alarms not currently active.

Hold down the key for 2 seconds to turn the instrument from on to off or vice versa. When it is off, only the decimal point remains on the display. In menu mode this key acts as a SCROLL DOWN or DOWN key (decreasing value)

Pressing the “mode” and “on-off” keys at the same time.

If you press both keys at the same time and then release within 2 seconds, you will move one level deeper in the display menu. If you press both keys for more than 2 seconds you will move one level up. If you are currently viewing the lowest level in the menu and you press both keys and release within 2 seconds, you will go up one level.

5.2 Displays

The device can provide information of all kinds on its status, configuration, and alarms through a display and leds on the front panel.

5.2.1 Display

Normal display shows:

• regulation temperature in tenths of degrees celsius with a decimal point, or in degrees fahrenheit without a

decimal point.

• the alarm code, if at least one alarm is active. If multiple alarms are active, the one with greater priority will be

displayed, according to the Table of Alarms.

• If temperature control is not analogue and depends on the status of a digital input (AI1 or AI2 configured as

digital inputs), the “On” or “Off” label will be displayed, depending on whether temperature control is active or

not.

• When in menu mode, the display depends on the current position. Labels and codes are used to help the user

identify the current function.

• Decimal point: when displaying hours of operation, indicates that the value must be multiplied x 100

5.2.2 SET display for air-air machines (for models Ech 2xxB only)

To make easier the user interface in air-air versions, if iyou place parameter Pa H53 = 1, the set for the selected mode will be displayed; pressing UP e DOWN keys on the remote keyboard directly modifies the set of the current mode. You cannot directly modify the set in the local keyboard.

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5.2.3 Led

Led compressor 1.

• ON if compressor 1 is active

• OFF if compressor 1 is off

• BLINK if safety timing is in progress

Compressor 2 (or capacity step) led

• ON if compressor (capacity step) is on

• OFF if compressor (capacity step) is off

• BLINK if safety timing is in progress

Defrost led

• ON if defrosting is in progress

• OFF if defrosting is disabled or has been completed

• BLINK if timing is in progress (defrost interval)

Electrical heater/boiler led

• ON if the internal anti-freeze electrical heater or boiler is on

• OFF if the internal anti-freeze electrical heater or boiler is off

Heating led

• ON if the device is in heating mode

Cooling led

• ON if the controller is in cooling mode

If neither the HEATING led nor the COOLING led is on, the controller is in STAND-BY mode

5.3 Remote keyboard

The remote keyboard on the display is an exact copy of the information displayed on the instrument, with the same leds;

Remote keyboard

It performs exactly the same functions as those described in the display section. The only difference is in use of the UP and DOWN keys (to increase and decrease value), which are separate from the MODE and ON/OFF keys. Connection with the controller is illustrated below:

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REAR VIEW

CONN A

REMOTE KEYBOARD

24 25 26

SERIAL KEYB

CONN B

EXP

REMOTE KEYBOARD: Remote keyboard

REAR VIEW: rear view of the control module

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The terminals of the remote keyboard are associated with the following colours:

• 24 Æ blue

• 25 Æ red

• 26 Æ black

Be cautious when connecting these terminals because they are reversed against the connector’s terminals.

5.4 Parameter programming – Menu levels

Device parameters may be modified using a Personal Computer (with the required software, interface module and cables), or using the keyboard. If using the keyboard, access to parameters is arranged in a hierarchy of levels which may be accessed by pressing the “mode and “on-off” keys at the same time (as described above). Each menu level is identified by a mnemonic code which appears on the display.

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Menu structure

The structure is set up as shown in the diagram below:

Level 0 Level 1 Level 2 Level 3

Level 4

Control Probe Current Alarm

Set point SEt

Analogue Inputs TP

Alarms Err

Digital inputs Id

Parameters PAr

Password Pss

Operating Hours

OHr

Label Set Cooling Coo

Label Set Heating HEA

Input Code t01...t04

Current alarms Code E00

Input Code 01...05

Configuration Parameters CnF

Compressor Parameters CP

Fan Parameters FAn

Alarm Parameters ALL

Pump Parameters PUP

Antifreeze Parameters Fro

Defrost Parameters dFr

Password Value

Compressor 1 hours OH1

Set Cooling Value

Set Heating Value

Analogue Input Value

Digital Input Status

Parameter Index H01...

Parameter Index C01...

Parameter Index F01...

Parameter Index A01...

Parameter Index P01...

Parameter Index r01...

Parameter Index d01...

Number of hours Parameter

Parameter Value

Compressor 2 hours OH2

Pump hours OPH

ECH 200 BD

Number of hours Parameter

Numero ore parameto

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Label

5.4.1 Visibility of parameters and sub-menus

With a personal computer, interface key (copy card), suitable cables and the “Param Manager” software, it is possible to restrict the visibility and modification of parameters and entire submenus. A “visibility value” may be assigned to each parameter, as described below:

Value Meaning

0003 Parameter or label visible at all times 0258 Parameter or label visible if user password entered correctly (password = Pa

H46)

0770 Parameter or label visible if user password entered correctly (password = Pa

H46). Parameter cannot be modified.

0768 Parameter visible from PC only.

Some visibility settings are factory set. For more information, please refer to the “Param Manager” instructions.

Power step

Polarity NO3

6 SYSTEM CONFIGURATION

In this section we will look at how to configure parameters for various loads on the basis of the type of installation to be controlled.

6.1 Compressors

Ech 200 BD can control systems consisting of one cooling circuit with 1 or 2 compressors. If there is a capacity step, it will be considered as a compressor. Each compressor is piloted by a device relay.

Compressors will turned on or off depending on the temperatures detected and the temperature control functions that

have been set (refer to the section on Compressor controls – regulation algorithm)

6.1.1 Compressor configuration

The first compressor must be connected to output NO1;

The second compressor, if there is one, must be connected to output NO3, with the following parameter settings:

• Pa H48=2 (2 compressors per circuit)

• Pa H23=2 (output NO3 configured as compressor/capacity step) or Pa H25=0 (open collector output for the

second compressor/capacity step).

If the open collector output is used, an external relay will be required for compressor management.

If NO3 is configured as a second compressor/capacity step output, polarity may be selected using the parameter

Pa H51, polarity of compressor 2/ capacity step output (on relay 3 only).

• 0= relay ON if compressor 2/ capacity step ON,

• 1= relay ON if compressor 2/ capacity step OFF.

The polarity of NO1 is unvariable:

• relay ON if compressor 1/ capacity step ON

Balancing hours of

operation

Unvaried sequence

Safety timing

-on timing

On-on timing

Off-on and on-on

comp. diagram

6.1.2 Compressor on/off sequence

The order in which the compressors come on may be modified using parameter Pa H50, compressor on sequence:

• Pa H50=0 compressors come on depending on the number of hours of operation (balancing hours of operation)

• Pa H50=1 compressor 1 is turned on first, followed by compressor (or capacity step) 2 (unvaried sequence).

If Pa H50= 0, the compressor with the least hours of operation comes on first, unless it is subject to: a current compressor shutdown alarm (refer to table of alarms)

safety timing in progress.

If Pa H50= 0, the compressor with the most hours of operation is turned off first.

If Pa H50=1: compressor 2 (capacity step) is turned on only if compressor 1 is already on. compressor 1 is turned off only if compressor 2 (capacity step) is already off. If there is a compressor 1 shutdown alarm, compressor 2 will be turned off immediately.

6.1.3 Compressor timing

The turning on and off of compressors must comply with safety times which may be set by the user using the parameters specified below:

There is a safety interval between the time a compressor goes off and the time the same compressor comes back on (compressor on…off safety time, controlled by parameter Pa C01); This interval of time must elapse when the “ECH 200 BD” is turned on.

There is a safety interval between the time a compressor is turned on and the time it is turned on again (compressor on...on safety time, controlled by parameter Pa C02) .

COMPR

OFF

Pa C01

Pa C02

Time

COMPR: compressor Time: seconds x 10

Pa C01: ON-OFF safety time Pa C02: ON-ON safety time

On-on and off-off

Timing

diagram for 2

comp.

On-on and off-off

diagram for 2

comp.

If the system includes 2 compressors (or capacity steps) there are intervals of time which must pass between turning on of the 2 compressors (Pa C06) and turning off of the 2 compressors (Pa C07). An amount of time determined by parameter

Pa D11 (compressor on delay during defrosting) must pass between turning on a compressor and a capacity step.

The off time interval between compressors is not applied in the event of a compressor shutdown alarm, in which case they stop immediately.

COMPR1

OFF

COMPR2

OFF

Pa C05

Pa C07

Time

COMPR1: compressor 1 COMPR2: compressor 2 Time: time in seconds

Pa C05: on time interval between compressors Pa C07: off time interval between compressors

6.2 Condensation fan

Various fan piloting modules can be connected to “Ech 200”, based on the models available Look at the following table:

Ech 210 * *

Legend:

6.2.1 Fan configuration

The reference is to the fan control unit located outside near the heat exchanger which normally acts as a condenser. If a heat pump is used, the exchanger will operate as an evaporator.

First of all, connect the fan up correctly to the appropriate output (refer to connection diagrams).

The fan output may be configured to work proportionately or as ON-OFF.

Pa F01 – Selection of triac output mode (TK and TC):

The fan may also be controlled by the output associated with the optional board:

Pa H25 – configuration of optional board:

If the output is configured as proportional TK the PICK-UP, PHASE SHIFT and IMPULSE DURATION parameters are also significant.

TK TC 4-20mA 0-10V

• TK: 230V~/2A command

• TC: control signal for fan control modules (500w,1500w,2200w)

• 4-20mA o 0-10V: standard command for fan control through external module (inverter).

• On model Ech 210 BD, the fan may be controlled with a proportionate output with a maximum load of 2A.

• 0= proportional fan output (TK)

• 1= ON-OFF fan output; in this mode the fan will be off if the proportional control has an output of 0 , on at

maximum speed (no capacity step) if control output is greater than 0.

• 2= external anti-freeze electrical heater control, for water-water machines with gas reversal

• 3= fan command for ON-OFF operation in response to compressor request. In this mode the fan is turned off

and on depending on compressor status.

• 0= Open Collector output for second compressor

• 1= 4...20 mA fan speed output

• 2= 0-10 V fan speed output

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Pick-up

Phase shift

Impulse duration

Connection

diagram of the

DRV module

Every time the external fan is started up, power is supplied to the exchanger fan at maximum voltage, and the fan operates at maximum speed, for an amount of time equal to Pa F02 seconds; after this time the fan operates at the speed set by the regulator.

Pa F02 = Fan pick-up time (seconds)

Determines a delay during which it is possible to compensate the different electrical characteristics of the fan drive motors:

Pa F03 = duration of fan phase shift, expressed in microseconds x 200.

Determines the duration of the TK output piloting impulse in microseconds x 200

Pa F04= triac piloting impulse duration

6.2.2 DRV module

If a DRV three-phase fan module is used, follow the diagram below:

DRV

J5=3

J6=on

J7=on1

Energy/EWCM

J8=off

Polarity

Continuous

operation

TF: current

transformer

6.3 Reversing valve

The reversing valve is used only when operating in “heat pump” mode.

It is active if:

• relay 3 configuration parameter Pa H23= 0.

• heat pump is enabled, Pa H28= 1.

The reversing valve is off if the instrument is OFF or on stand-by.

Polarity may be configured using the following parameter:

Pa H38= Reversing valve polarity

• 0: relay active in cool mode

• 1: relay active in heat mode

In cooling mode the reversing valve is never active.

6.4 Hydraulic pump

The hydraulic pump must be connected to the output of relay NO2 (refer to connection diagram). It is active only if the corresponding parameter, Pa H22, is set to 0.

The pump may be configured to function in three different ways using parameter Pa P01:

• Pa P01 = 0 : continuous operation

• Pa P01 = 1 : operation when called up by regulation algorithm (compressor)

• Pa P01 = 2 : cyclic operation

CONTINUOUS OPERATION: Pump is on at all times.

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Eliwell ECH 200BD ""Adaptive User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual