Samson TROVIS 5400, TROVIS 5477 Mounting And Operating Instructions

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Automation System TROVIS 5400 Ventilation Controller TROVIS 5477

Electronics from SAMSON

Mounting and Operating Instructions

EB 5477 EN

Firmware version 2.0x Edition April 2004

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Disclaimer of liability

We are constantly developing our products and therefore, reserve the right to change the product or the information in this document at any time without notice.

We do not assume any liability for the accuracy or completeness of these mounting and op erating instructions. SAMSON rejects liability for claims by the buyer, especially claims for compensation including lost profits or any other financial loss, except the damage was caused intentionally or by gross negligence. If an essential term of the contract is breached by negligence, SAMSON's liability is limited to the foreseeable damage.

Safety instructions

Assembly, start-up and operation of this device may only be performed by

trained and experienced personnel familiar with this product. Proper transportation and storage are assumed. The controller is intended for use in electrical power installations. For wiring

and maintenance, you are required to observe the relevant safety regulations.

What’s new compared to previous version (1.9)

Compared to the firmware version 1.9, the following changes have been made:

A two-second delay before a sensor failure is detected and before a binary input state

changes to suppress error messages caused by signal distortion. The system bus interface can be switched over from 8-bit addressing to 16-bit addressing

(Fb44). When the modem is in operation, if you keep the enter key pressed when the time ap

pears on the display, the current connection status “Free”, “Call”, “Conn” or “Ring” is shown.

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Contents

Table of contents

1 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.1 Operating controls . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.1.1 Operating keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.1.2 Mode switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1.2 Operating modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

1.3 Display. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

1.4 Data retrieval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

1.5 Setting the time and date . . . . . . . . . . . . . . . . . . . . . . . 10

1.6 Programming the time schedule . . . . . . . . . . . . . . . . . . . . 12

1.6.1 Entering public holidays . . . . . . . . . . . . . . . . . . . . . . . . 14

1.6.2 Entering vacations. . . . . . . . . . . . . . . . . . . . . . . . . . . 15

2 Start-up. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

2.1 Setting the system code number and control method . . . . . . . . . . 17

2.2 Activating and deactivating functions. . . . . . . . . . . . . . . . . . 19

2.3 Changing parameters . . . . . . . . . . . . . . . . . . . . . . . . . 20

2.4 Calibrating sensors . . . . . . . . . . . . . . . . . . . . . . . . . . 21

2.5 Entering the key number . . . . . . . . . . . . . . . . . . . . . . . . 22

2.6 Resetting default setting . . . . . . . . . . . . . . . . . . . . . . . . 22

3 Manual operation. . . . . . . . . . . . . . . . . . . . . . . . . . . 23

4 Systems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

4.1 System code number 9 . . . . . . . . . . . . . . . . . . . . . . . . 36

5 Control methods and system components . . . . . . . . . . . . . . . 37

5.1 Ventilation and temperature control in air-conditioning systems . . . . . 37

5.1.1 Supply air temperature control . . . . . . . . . . . . . . . . . . . . . 37

5.1.2 Exhaust air temperature control . . . . . . . . . . . . . . . . . . . . 37

5.1.3 Exhaust air temperature cascade control . . . . . . . . . . . . . . . . 38

5.1.4 Room temperature control . . . . . . . . . . . . . . . . . . . . . . . 39

5.1.5 Room temperature cascade control. . . . . . . . . . . . . . . . . . . 40

5.2 Humidity control in air-conditioning systems (Anl 6, 8 and 9) . . . . . . 41

5.2.1 Supply air humidity control . . . . . . . . . . . . . . . . . . . . . . 41

5.2.2 Exhaust air/room humidity control . . . . . . . . . . . . . . . . . . . 42

5.2.3 Exhaust air or room humidity cascade control

5.3 Inputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

5.4 Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

5.4.1 Heating coil. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

5.4.2 Mixed air chamber . . . . . . . . . . . . . . . . . . . . . . . . . . 45

5.4.3 Heat recovery unit (HRU) . . . . . . . . . . . . . . . . . . . . . . . 48

. . . . . . . . . . . . . 42

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Contents

5.4.4 Cooling coil. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

5.5 Humidifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

5.6 Fans with variable speed . . . . . . . . . . . . . . . . . . . . . . . 51

6 Control functions . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

6.1 Supply air temperature limit . . . . . . . . . . . . . . . . . . . . . . 53

6.2 Supply air humidity limit . . . . . . . . . . . . . . . . . . . . . . . 53

6.3 Return air temperature limit . . . . . . . . . . . . . . . . . . . . . . 54

6.4 Variable return air temperature maximum limit . . . . . . . . . . . . . 54

6.5 Sustained room temperature . . . . . . . . . . . . . . . . . . . . . . 55

6.6 Night purge. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

6.7 Summer compensation. . . . . . . . . . . . . . . . . . . . . . . . . 57

6.8 Fan operation dependent on room temperature/room humidity . . . . . 57

6.9 Air quality control via the mixed air chamber . . . . . . . . . . . . . 58

6.10 Outdoor temperature-compensated control . . . . . . . . . . . . . . . 59

6.10.1 Outdoor temperature-compensated supply air control . . . . . . . . . . 59

6.10.2 Summer deactivation . . . . . . . . . . . . . . . . . . . . . . . . . 60

6.10.3 Summer time operation

6.11 Control functions . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

6.11.1 System start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

6.11.2 Circulating air mode after system start-up . . . . . . . . . . . . . . . 62

6.11.3 Enabling fan speed 1 . . . . . . . . . . . . . . . . . . . . . . . . . 62

6.11.4 Enabling fan speed 2 . . . . . . . . . . . . . . . . . . . . . . . . . 63

6.11.5 Fan operation feedback . . . . . . . . . . . . . . . . . . . . . . . . 64

6.11.6 Enabling the cold storage . . . . . . . . . . . . . . . . . . . . . . . 64

6.11.7 Controlling the direct expansion evaporator . . . . . . . . . . . . . . 65

6.11.8 Controlling the chiller . . . . . . . . . . . . . . . . . . . . . . . . . 65

6.11.9 Condensation detection . . . . . . . . . . . . . . . . . . . . . . . . 66

6.11.10 Circulation pump control for the heating coil . . . . . . . . . . . . . . 66

6.11.11 Circulation pump control for the HRU. . . . . . . . . . . . . . . . . . 67

6.11.12 Electric air heater . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

7 System-wide functions . . . . . . . . . . . . . . . . . . . . . . . . 68

7.1 Switchover between summer time and winter time . . . . . . . . . . . 68

7.2 Frost protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

7.2.1 System frost protection. . . . . . . . . . . . . . . . . . . . . . . . . 68

7.2.2 Frost protection HRU. . . . . . . . . . . . . . . . . . . . . . . . . . 68

7.2.3 Stand-by monitoring. . . . . . . . . . . . . . . . . . . . . . . . . . 69

7.2.4 Stand-by control . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

7.3 Forced-operation of the pumps . . . . . . . . . . . . . . . . . . . . 69

7.4 External correction of the temperature set point . . . . . . . . . . . . . 70

. . . . . . . . . . . . . . . . . . . . . . . . 60

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Contents

7.5 External setting of the outdoor air rate . . . . . . . . . . . . . . . . . 70

7.6 External correction of the humidity set point . . . . . . . . . . . . . . 70

7.7 External setting of the air volume . . . . . . . . . . . . . . . . . . . 71

7.8 External demand for operation . . . . . . . . . . . . . . . . . . . . 71

7.9 External demand for fan speed 2. . . . . . . . . . . . . . . . . . . . 72

7.10 External selection of the operating mode . . . . . . . . . . . . . . . . 73

7.10.1 External selection of the operating mode using the four-staged switch . . 73

7.10.2 External selection of the operating mode using Type 5257-6 Room Panel 73

7.11 Request for externally required signal . . . . . . . . . . . . . . . . . 75

7.12 Outdoor temperature output . . . . . . . . . . . . . . . . . . . . . . 76

7.13 Locking settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

8 Malfunctions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

8.1 Sensor failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

8.1.1 Status register (FSR) . . . . . . . . . . . . . . . . . . . . . . . . . . 77

9 Communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

9.1 RS-232-C serial interface . . . . . . . . . . . . . . . . . . . . . . . 80

9.2 RS-485 interface . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

9.3 Description of the communication parameters to be set . . . . . . . . . 82

9.4 Memory module. . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

10 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

11 Electrical connection. . . . . . . . . . . . . . . . . . . . . . . . . . 86

12 Appendix. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

12.1 Function block list CO . . . . . . . . . . . . . . . . . . . . . . . . . 89

12.2 List of parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . 96

12.3 Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107

12.4 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109

12.5 Resistance values. . . . . . . . . . . . . . . . . . . . . . . . . . . 110

12.6 Customer data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

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Operation

1 Operation

1.1 Operating controls

The TROVIS 5477 Ventilation Controller can be operated using the operating controls on the front panel.

The controller is ready for operation using its default temperature and time schedule settings. On start-up, after switching on the power supply, the correct time and date must be set in the controller (–> section 1.5).

1.1.1 Operating keys

The operating keys are located on the front of the controller and protected by a transparent cover.

Changeover key

(press with pencil or similar pointed object) Allows you to change between the operating level, parameter level and configuration level.

Reset key

(press with pencil or similar pointed object) Allows you to reset all freely accessible parameters to default values (factory setting). This key’s function is only active on the parameter level

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Arrow keys

Allow you to retrieve and set parameters

Enter key

Operating level: allows you to read set points Parameter level: allows you to access and acknowledge parameters Configuration level: allows you to access and acknowledge function

blocks

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Operation

1.1.2 Mode switches

Operating mode switch

Automatic operation with switchover between rated and re duced operation

Rated operation Reduced operation Manual operation

Selection switch for manual operation

The function of the selection switch depends on the position of the operating mode switch (see above).

Position Function

at operating mode switch at selection switch for manual operation

Operation of selected output

,, Display of output states

Control output Y1 (heating coil) Control output Y2 (humidifier, mixed air chamber, heat

recovery unit) Control output Y3 (cooling coil) Pump(s) Fans

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Operation

Set point correction switch

Changes remain effective until the switch position is changed again

–: Set point reduction in 1 °C increments per notch 0: No change in set point +: Set point increase in 1 °C increments per notch

1.2 Operating modes

Day mode (rated operation) ( )

The set points set for rated operation are constantly used by the controller irrelevant of the programmed time-of-use or summer mode.

Stand-by operation ( )

The ventilation is deactivated. The frost protection is active.

Manual operation ( )

Manual operation of valves and pumps.

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1.3 Display

Operation

During operation, the display indicates the current time as well as information about the op eration of the controller. The times-of-use are represented by black squares below the row of numbers at the top of the display. Symbols indicate the operating status of the controller.

Y1 Y2 Y3

2322212019181716151413121110987654210

32˚C

1 Time schedule 2 Public holidays 3 Vacation 4 Mixed air chamber 5 Malfunction 6 Rated operation 7 Reduced operation 8 Frost protection

Y3MY2

9 Heat recovery unit 10 Heating coil 11 Cooling coil 12 Humidifier 13 Control outputs 14 Supply air temperature/humidity 15 Room temperature/humidity 16 Exhaust air temperature/humidity

Fig. 1 · Display while the controller is operating (example)

See section 1.4 for more information about how to read the current status of the controller in the operating level.

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Operation

1.4 Data retrieval

You can view information in the operating level concerning various temperatures, control signals, times-of-use, public holidays, states of the binary inputs as well as the baud rate (–> Fig. 30). Which temperatures are shown depends on the system code number and the configuration.

You will find a list of the various displays in section .

How to proceed:

The controller shows the time.

Press the arrow key. Every time you press the key, another dat point appears on the display.

If required, you can view other information concerning a data point.

1.5 Setting the time and date

Set the current date and time directly after start-up and after a power failure, if necessary. You must set the time and date in the parameter level.

How to proceed:

23222120191817161514131211109876542103

Switch to the configuration and parameter level.

appears on the display.

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Y1 Y2 Y3

23222120191817161514131211109876542103

Press the enter key. The time appears on the display. The symbol starts to blink slowly.

Y1 Y2 Y3

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Operation

23222120191817161514131211109876542103

Press the enter key.

The symbol and

blink quickly.

Use the arrow key to set the correct time.

Y1 Y2 Y3

23222120191817161514131211109876542103

Press the enter key to acknowledge the time. A date appears on the display

Y1 Y2 Y3

23222120191817161514131211109876542103

Use the arrow key to set the correct date.

Press the enter key to acknowledge the date. The year appears on the display.

Use the arrow key to set the correct year. Press the enter key to acknowledge the year.

Y1 Y2 Y3

The time appears on the display again. The symbol blinks slowly.

Press both arrow keys simultaneously.

appears on the display again.

Press the changeover key to return to the operating level.

Note:

The controller returns to the operating level two minute after the last key has been pressed.

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Operation

1.6 Programming the time schedule

You can enter two time periods for every day of the week. If you need just one continuous time-of-use period, set the same time for the start of the sec ond time period and the end of the first time period. You can set separate times-of-use for the system and, if required, for the fan speed 2.

Times-of-use Display System Fan speed 2

START, STOP START, STOP

and blink

, and blink

Parameters

WE* Range of values

Period/day 1–7 1–7, 1, 2, 3, 4, 5, 6, 7 with 1–7 = every day,

1–5 = Monday to Friday, 6–7= Saturday and Sunday,

1 = Monday, 2 = Tuesday, ..., 7 = Sunday Start first time-of-use 7:00 0:00 to 24:00 h; in steps of 30 minutes Stop first time-of-use 12:00 0:00 to 24:00 h; in steps of 30 minutes Start second time-of-use 12:00 0:00 to 24:00 h; in steps of 30 minutes Stop second time-of-use 22:00 0:00 to 24:00 h; in steps of 30 minutes * Default setting (WE) valid for system

How to proceed:

23222120191817161514131211109876542103

Y1 Y2 Y3

Switch to the configuration and parameter level.

appears on the display.

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Operation

23222120191817161514131211109876542103

Press the enter key to enter the parameter level. The time appears on the display.

blinks slowly.

STOP

START

STOP

START

Y1 Y2 Y3

23222120191817161514131211109876542103

Press the arrow key until the same display as shown appears for changing the system times-of-use.

START, STOP

(

and the symbol start to blink,

additionally blinks with fan speed 2).

Y1 Y2 Y3

23222120191817161514131211109876542103

Press the enter key.

1–7

appears on the display.

Select the duration/day for the times-of-use. 1–7 = Monday to Sunday

START

STOP

Y1 Y2 Y3

23222120191817161514131211109876542103

Y1 Y2 Y3

23222120191817161514131211109876542103

1–5 = Monday to Friday 6–7 = Saturday and Sunday 1 = Monday, 2 = Tuesday, …, 7 = Sunday

Press enter key. The symbol andPAstart to blink

START

quickly.

and a time appear on the display.

Set the start time (30-minute steps).

Press the enter key.

STOP

and a time appear on the display. Set the stop time (30-minute steps). Press the arrow key

START

Y1 Y2 Y3

and a time appear on the display. The second time-of-use period can set in the same way as the first time-of-use period.

Repeat the steps in the gray box to enter times-of-use for other days not yet programmed.

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Operation

Select

End

. Exit the parameter level. Return to the operating level.

Note! The controller automatically returns to the operating level when keys are left unpressed for longer than two minutes.

Note! Use just the menu for the individual days to check the programmed time schedules. When time blocks are selected, the times-of-use for the days selected are reset to default settings!

1.6.1 Entering public holidays

The controller uses the times-of-use programmed for Sundays on public holidays. You can enter a maximum of 20 public holidays.

Parameter

Public holidays 01.01; 01.05;

How to proceed: Switch to the configuration and parameter level.

0123456789101112131415161718192021222324

To enter other public holidays, press the arrow key until again. Repeat the steps in the gray box.

WE Range of values

01.01 (1 Jan) to 31.12 (31 Dec)

25.12; 26.12

appears on the display.

Press the enter key. The time appears on the display, blinks slowly.

Select public holidays data point.

appears on the display. Press the enter key to access data point. Press the arrow key until

M M

Y3 Y2

Y1 Y2 Y3

sary. Press the enter key.

The symbol blinks quickly. Change the date of the public holiday. Confirm the date of the public holiday.

– – – –

appears, if neces

appears on the display

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Operation

Select

End

. Exit the parameter level. Return to the operating level.

Note! Public holidays that are not assigned to a specific date should be deleted by the end of the year so that they are not carried on into the following year.

Deleting a public holiday:

Use the arrow key to select the public holiday you want to delete. Press the enter key. Press the arrow key until

– – – –

appears.

– – – –

is between 31.12 and 01.01.

Press the enter key. The public holiday is deleted.

1.6.2 Entering vacations

During vacation periods, the controller constantly remains in stand-by mode.All safety functions are activated. A maximum of 10 vacation periods can be entered.

Parameter

Vacation period (START, STOP) – 01.01 to 31.12

WE Range of values

How to proceed: Switch to the configuration and parameter level.

appears on the display.

Press the enter key. The time appears on the display, blinks slowly.

0123456789101112131415161718192021222324

Select vacation data point.

appears on the display.

M M

Y3 Y2

Y1 Y2 Y3

Press the enter key to access vacation data point.

START

appears on the display.

Press the arrow key until

– – – –

appears, if neces

sary.

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Operation

Press the enter key. The symbol blinks quickly.

Set when the vacation period should start. Press the enter key to confirm the start of the vacation period.

STOP

appears on the display.

Set when the vacation period should end. Press the enter key to confirm the end of the vacation period.

To enter other vacations, press the arrow key until peat the steps in the gray box.

End

Select Exit the parameter level. Return to the operating level.

– – – –

appears on the display again. Re

Note!

Vacations that have been entered should be deleted by the end of the year so that they are not carried on into the following year.

Deleting a vacation period:

Select the start of the vacation period to be deleted. Press the enter key. Press the arrow key until

– – – –

Press the enter key. The vacation period has been deleted.

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is between 31.12 and 01.01.

– – – –

appears on the display.

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2 Start-up

2.1 Setting the system code number and control method

Start-up

This ventilation controller allows ten different systems to be controlled. Each system is as signed a system code number. You can find a list of the different systems in section 4. In ad dition, the control method can be determined. The following control methods are available:

Control method Display

Supply air control

Exhaust air control

Exhaust air cascade control

Room control

Room cascade control

The control methods and functions of the controller are described in sections 5, 6 and 7. Every change in system code number or control method causes the assignment of sensors to

be reprogrammed: the sensor inputs required for the function blocks are activated and the sensor inputs not used are deactivated. These settings can be changed manually.

You must set the system code number in the configuration level (see Fig. 30).

How to proceed:

Change to the configuration and parameter level.

appears on the display.

Select

level. Press the enter key.

The currently active system code number, e.g. Anl 1, blinks on the display. Press the enter key.

Anl

andCOblink quickly.

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Start-up

Select the required system code number. Confirm the system you have selected.

Anl

starts to blink slowly on the display.

Press upward arrow key. The components of the system and the arrows indicating the control method start to blink on the display.

Press the enter key. The components of the system and the control method arrows start to blink quickly on the display.

Select the control method. Confirm the control method you have selected.

System code numbers 6, 8 and 9:

Select the control method for the humidity control loop. The humidity control loop is set in the same manner as the temperature control loop. On selecting options, humidifying and dehumidifying mode or just humidifying mode are differentiated between. In the humidifying mode, just the humidifier blinks.

Press both arrow keys simultaneously. Press the changeover key to return to the operating level.

appears on the display again.

Note!

The controller automatically returns to the operating level when keys are left unpressed for longer than two minutes.

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Start-up

2.2 Activating and deactivating functions

The controller is configured by setting the function blocks (Fb). You can activate or deactivate

function blocks in the configuration level square located to the right of a function block number at the top of the display indicates whether function block is activated. The initial display shows the function blocks 1 to 24. Scroll to the function blocks 25 to 47 to display the setting of these function blocks. Proceed as described below to set the function block parameters.

How to proceed:

Change to the configuration and parameter level.

appears on the display.

Select Enter the configuration level. Select the required function block. Confirm the function block you have selected.

If a function is protected, (–> section 2.5) before a protected function block can be changed.

Press the upward arrow key to activate the function block (Fb = ON). A black square to the right of the function block number at the top of the display indicates that the function block is activated.

or alternatively:

Press the downward arrow key to deactivate the function block (Fb = OFF). Press the enter key to acknowledge the setting.

If the function block is left open, other parameters can be set. Proceed: The parameter appears: Carry out change and confirm it. Exit the function block.

Repeat the steps in the gray box to set other function blocks in the open configuration level.

Press both arrow keys simultaneously to exit parameter level. Press the changeover key to return to the operating level.

configuration level.

Anl

appears on the display. The code number must be entered

. On opening the configuration level, a black

appears on the display.

Fb_

blinks.

Note! The controller automatically returns to the operating level when keys are left unpressed for longer than two minutes.

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Start-up

2.3 Changing parameters

Depending on the system code number set and the active functions, not all the parameters are accessible which are listed in the parameter lists in the appendix (−> section 12.2).

How to proceed:

Change to the configuration and parameter level.

appears on the display.

Press the enter key. The time appears on the display.

Select the parameter you want to set. Access the parameter. Change the parameter. Confirm the new parameter.

Repeat the steps in the gray box to set other parameters.

Press both arrow keys simultaneously to exit the parameter level. Return to the operating level.

Note!

The controller automatically returns to the operating level when keys are left unpressed for longer than two minutes.

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Start-up

2.4 Calibrating sensors

The sensor calibration is performed in the configuration level.

Fb17 = ON: Pt 100 and Pt 1000 sensors

Fb17 = OFF: Pt 100 and PTC sensors

The values measured by all the connected sensors can be changed or reset. To proceed, set the sensor value displayed to the temperature measured directly at the measuring point (ref erence temperature). Activate calibration with Fb1 to Fb7. An incorrect calibration can be deleted by setting Fb1 to F7 = OFF.

How to proceed:

Change to the configuration and parameter level.

Select Enter the configuration level. Press the upward arrow key until Fb25 appears on the display.

(This function block is merely selected to enter the code number. Another function block that is protected by the code number can be also used.)

Press the enter key. Enter and confirm the code number (–> section ) .

Close function block Fb 25. Select the function block of the sensor that is to be calibrated (Fb1 to Fb7):

Fb1: Supply air sensor Fb2: Exhaust air sensor Fb3: Outdoor sensor Fb4: Return flow sensor, heating coil Fb5: Room sensor Fb6: Return flow sensor, HR (system 3 and 5) Fb7: Mixed air or extract air sensor (system 2 and 4)

Press the enter key. A temperature appears on the display.

Set the temperature measured at the actual point of measurement. The actual temperature at a thermometer direct at the point of measurement can be used as the reference temperature.

configuration level.

appears on the display.

Anl

appears on the display.

Fb_

starts to blink.

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Start-up

Confirm the new temperature. End sensor calibration.

Other sensors can be calibrated in the same manner.

Press both arrow keys simultaneously to exit parameter level. Return to the operating level.

2.5 Entering the key number

Several functions are protected against unintentional and unauthorized access. These func tions can only be altered when the code number is known. The code number is written on page 116. Tear out this page or blank out the code number to prevent its unauthorized use.

How to proceed:

appears on the display. Press the arrow key until the correct code number appears on the display. Confirm the code number.

When the correct code number is confirmed, the function block that should be changed starts to blink quickly on the display.

The code number remains active for approx. three minutes.

2.6 Resetting default setting

Parameters from the parameter level can be reset to their default values (factory settings).

How to proceed:

Press the reset key with a pencil, etc. All the parameters are reset to the factory setting (WE).

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Manual operation

3 Manual operation

In manual operation mode, all outputs are set, see wiring plan (-> section 11 ).

How to proceed:

1. Set the operating mode switch to .

2. Slide the selector switch to the output you want to change: Y1 to 3: control signal output 1 to 3

: pump(s) output

: fan(s) output In systems with several pumps, select the pumps using the key. The associated symbol blinks in the system diagram. When the pumps are deactivated, just the pump circuit blinks on the display.

– – – – appears on the display when the output is not relevant for the system code num

ber selected.

3. Change the output: Increase the control signal: activate pumps, fan Reduce the control signal: deactivate pumps, fan . For two-speed fans, you can select The value does not need to be confirmed. It is kept even if you slide the selector switch to another setting.

ON1,ON2orOFF

4. Slide the operating mode switch from to exit the manual operating mode.

Note!

In manual operation mode, the user can set the outputs anyway as required. On selecting the manual operation mode, all limit temperatures and logical links ceased to be in force. The user has absolute control and takes on responsibility for interaction between all the out

puts and the resulting consequences. A frost protection thermostat (Fb15 = ON) connected to the controllers keeps functioning even in manual operation mode.

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Systems

4 Systems

The ventilation controller can be used to control ten different types of systems which are as signed system code numbers in the controller.

System code

number

* Also chilled ceiling or direct expansion evaporator (single-speed)

System description

Heating coil Ventilation

Heating coil

Cooling coil*

Heating coil

Mixed air chamber

Heating coil

Heat recovery unit

Heating coil

Cooling coil*

Mixed air chamber

Heating coil

Cooling coil*

Heat recovery unit

Heating coil

Cooling coil

Humidifier

Cooling coil* Ventilation

Heating coil

Cooling coil

Mixed air chamber

Humidifier

Heating coil

Cooling coil

Heat recovery unit

Humidifier

System type

Ventilation

Air-conditioning

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System code number 0

Systems

Ext. ON Ext. speed 2

Set point

BE2

BA2 BA3

Speed 1 Speed 2

(AA)

BE1

(AE1)

(AE2)

BA2

BE3

BA1

Fig. 2 · Anl 0 (system code no. 0) (ventilation)

Control of the heating coil

Outdoor temperature-compensated supply air control (–> section 6.10.1)

Fan operation, 2-speed or 0 to 10 V (–> section 6.8 and 6.11.4)

BE4

(BE7)

AE4

(AE3)

F7F8

(AE3)

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Systems

System code number 1

Ext. ON Ext. speed 2

Set point

TrF

(AE2)

BA2

BA1 (BA4)

BE3

BE2

BA2 BA3

Speed 1On/off Speed 2

(AE1)

Y3Y1

(AA)

BE1 BE4

(BE7)

F8 F2

AE4

Specifications in parentheses can be selected as an alternative

Fig. 3 · Anl 1 (system code no. 1) (ventilation)

Control of the heating and cooling coils

Summer compensation (–> section 6.7)

Sequence operation of heating/cooling or overlapping operation (–> section 6.11.8)

Fan operation, 2-speed or 0 to 10 V (–> section 6.8 and 6.11.4)

(AE3)

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Page 27

System code number 2

(F7)

Systems

Ext. ON Ext. speed 2

Outdoor

Set point

air rate

BE1 BE4

(BE7)

F8 F9 F2

AE4

Specifications in parentheses can be selected as an alternative

(AE2)

BE3 BE2

BA1

BA2 BA3

Speed 1 Speed 2

(AE1)

(AA)

Fig. 4 · Anl 2 (system code no. 2) (ventilation)

Control of mixed air chamber and heating coil

Summer time operation (–> section 6.10.3)

Sequence operation of heating/dampers or mixed air temperature control (–> section

5.4.2) Automatic reversal of operating action for mixed air chamber (–> section 5.4.2)

Fan operation, 2-speed or 0 to 10 V (–> section 6.8 and 6.11.4)

(F7)

(AE3)

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Systems

System code number 3

Antifreeze required in HRU.

Ext. ON Ext. speed 2

Set point

LrF

(AE2)

BA2

BA5 BA1

Y2 Y1

BE3 BE2

BA2 BA3

Speed 1 Speed 2

(AE1)

BE1 BE4

(BE7)

F8 F2

Specifications in parentheses can be selected as an alternative

Fig. 5 · Anl 3 (system code no. 3) (ventilation)

Control of heat recovery unit (HRU) and heating coil

Frost protection for HRU (–> section 7.2.2)

Automatic reversal of operating action for HRU configurable (–> section 5.4.2)

Fan operation, 2-speed or 0 to 10 V (–> section 6.8 and 6.11.4)

AE4

(AE3)

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Page 29

Systems

Ext. ON Ext. speed 2

(AE2)

BA2

BE3 BE2

BA1

Y1Y2

BA2 BA3

Speed 1 Speed 2

(AE1)

Set point

BE1 BE4

(BE7)

F8 F2

Specifications in parentheses can be selected as an alternative

Fig. 6 · Anl 3 (system code no. 3) with cross-flow heat exchanger (ventilation)

Control of heat recovery unit (HRU) and heating coil

Heat recovery unit designed as a cross-flow heat exchanger

Frost protection for HRU (–> section 7.2.2)

Automatic reversal of operating action for HRU configurable (–> section 5.4.2)

Fan operation, 2-speed or 0 to 10 V (–> section 6.8 and 6.11.4)

LrF

AE4

(AE3)

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Systems

System code number 4

(F7)

Ext. ON Ext. speed 2

Set point T Set point rH

(AE2)

BE3 BE2

BA1 (BA4)

F4F7

Y1 Y3

BA2 BA3

Speed 1On/off Speed 2

(AE1)

(AA)

BE1 BE4

(BE7)

F8 F9

Specifications in parentheses can be selected as an alternative

AE4

Fig. 7 · Anl 4 (system code no. 4) (ventilation)

Control of mixed air chamber, heating and cooling coils

Summer compensation (–> section 6.7)

Summer time operation (–> section 6.10.3)

Sequential operation of heating/dampers/cooling or sequence of heating/cooling and

mixed air temperature control Automatic reversal of operating action for mixed air chamber (–> section 5.4.2)

Fan operation, 2-speed or 0 to 10 V (–> section 6.8 and 6.11.4)

(AE3)

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Page 31

System code number 5

Systems

Ext. ON Ext. speed 2

Set point

BE4

BE1

(BE7)

F8 F2

(AE2)

BA2

BA5 BA1

Y2 Y1 Y3

BE3

F4F6

BE2

BA2BA4 BA3

Speed 1On/off Speed 2

(AE1)

Fig. 8 · Anl 5 (system code no. 5) (ventilation)

Control of heat recovery unit (HRU) as well as heating and cooling coils

Summer compensation (–> section 6.7)

Frost protection for HRU (–> section 7.2.2)

Automatic reversal of operating action for HRU configurable (–> section 5.4.2)

Fan operation, 2-speed or 0 to 10 V (–> section 6.8 and 6.11.4)

AE4

(AE3)

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Systems

System code number 6

Ext. ON Ext. speed 2

Set point T Set point rH

BE1

BE4

(BE7)

F8 F9 F7

Specifications in parentheses can be selected as an alternative

(AE2)

BA2

BA1 (BA4)

BE3

BE2

BA2 BA3

Speed 1On/off Speed 2

(AE1)F6(AE2)

(AA)

Fig. 9 · Anl 6 (system code no. 6) (air-conditioning, only humidification)

Control of heating coil, cooling coil and humidification (only humidification)

Two control loops: Temperature and humidity control

Only humidification configurable (–> section 5.2)

Summer compensation (–> section 6.7)

Fan operation, 2-speed or 0 to 10 V (–> section 6.8 and 6.11.4)

AE4

(F7)

(AE3)

(AE4)F2(AE3)

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Systems

Antifreeze required heat exchanger.

Ext. ON Ext. speed 2

Set point T Set point rH

(AE2)

BA2

BE3

BA1

Y1Y3 Y2

BE2

BA2 BA3

Speed 1 Speed 2

(AA)

BE1 BE4

(BE7)

(AE1)F6(AE2)

Note: The position of the cooling coil is not shown on the display of the controller as here. Specifications in parentheses can be selected as an alternative

F8 F9 F7

AE4

(F7)

(AE3)

(AE4)F2(AE3)

Fig. 10 · Anl 6 (system code no. 6) (air-conditioning, humidifying and dehumidifying)

Control of cooling and heating coils and humidification (humidifying and dehumidifying)

Two control loops: Temperature and humidity control

Humidification or humidifying and dehumidifying operation configurable (–> section 5.2)

Summer compensation (–> section 6.7)

Fan operation, 2-speed or 0 to 10 V (–> section 6.7 and 6.11.4)

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Systems

System code number 7

Ext. ON Ext. speed 2

Set point

BE2

BA2

(AE2)

BA2(BA4) BA3

Speed 1On/off Speed 2

(AE1)

(AA)Y3

Fig. 11 · Anl 7 (system code no. 7) (ventilation)

Cooling coil control

Summer compensation (–> section 6.7)

Fan operation, 2-speed or 0 to 10 V (–> section 6.8 and 6.11.4)

BE1 BE4

(BE7)

F8 F2

Specifications in parentheses can be selected as an alternative

AE4

(AE3)

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Page 35

System code number 8

Systems

Ext. ON Ext. speed 2

Set point T Set point rH

BE3

BA1

(AE2)

Fig. 12 · Anl 8 (system code no. 8) (air-conditioning, only humidification)

(BA4)

BE2

BA2 BA3

Speed 1Speed 2

(AE1)F6(AE2)

AAY3

BE1 BE4

(BE7)

F8 F9 F7

Specifications in parentheses can be selected as an alternative

(F7)

AE4

(AE3)

Control of mixed air chamber, heating coil, cooling coil and humidification

Two control loops: Temperature and humidity control

Humidification or humidifying and dehumidifying operation configurable (–> section 5.2)

Summer compensation (–> section 6.7)

Summer time operation (–> section 6.10.3)

Automatic reversal of operating action for mixed air chamber (–> section 5.4.2)

Fan operation, 2-speed (–> section 6.8 and 6.11.4)

(AE4)F2(AE3)

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Systems

4.1 System code number 9

(AE2)

BA2

Y2 Y1

BA5 BA1

Antifreeze required heat exchanger.

BE3

(BA4)

BE2

BA2 BA3

Speed 1On/off Speed 2

(AE1)F6(AE2)

AAY3

Ext. ON Ext. speed 2

Set point T Set point rH

BE1 BE4

(BE7)

F8 F9 F7

Specifications in parentheses can be selected as an alternative

AE4

(F7)

(AE3)

Fig. 13 · Anl 9 (system code no. 9) (air-conditioning, only humidification)

Control of heat recovery unit (HRU), heating coil, cooling coil and humidification

(AE4)F2(AE3)

Two control loops: Temperature and humidity control

Humidification or humidifying and dehumidifying operation (–> section 5.2)

Summer compensation (–> section 6.7)

Automatic reversal of operating action for HRU configurable (–> section 5.4.2)

Fan operation, 2-speed (–> section 6.8 and 6.11.4)

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Control methods and system components

5 Control methods and system components

5.1 Ventilation and temperature control in air-conditioning systems

In temperature control, various control methods are differentiated between: Supply air tem

perature control, exhaust air temperature control, exhaust air cascade control, room and room cascade control.

5.1.1 Supply air temperature control

The sensor input F1 is the control variable input by default. Alternatively, the supply air tem perature can also be guided over the analog input AE1 to the controller. The supply air temperature is controlled by a PID algorithm with an adjustable

temperature set point

. Depending on the system code number, the temperature control loop has between 1 and 3 sequence outputs that are adapted to the dynamics of the correspond ing system components by means of the

KP, T

and

control parameters. Functions such as

return air temperature limit, summer compensation, manual set point correction or condensation detection can shift the set point. The supply air can be controlled dependent on the outdoor temperature.

Functions

Control method Supply air control (–> page 17) Sensor F1, supply air temperature

Assignment of inputs AE1 to AE4

Parameters

Supply air temperature set point 22 °C 0 to 50 °C K

WE Configuration

Fb1 = ON or

OFF

Fb18 = ON,

WE Range of values

0.5 0.1 to 99.9 60 sec 1 to 999 sec – – – – – – to 999 sec

option

: AE1F1

Supply air

5.1.2 Exhaust air temperature control

The sensor input F2 is the control variable input by default. Alternatively, the exhaust air tem perature can also be guided over the analog input AE3 to the controller. The exhaust air temperature is controlled by a PID algorithm with an adjustable

temperature set point

. Depending on the system code number, the temperature control loop has between 1 and 3 sequence outputs that are adapted to the dynamics of the correspond ing system components by means of the

KP, T

and

control parameters.

Exhaust air

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Control methods and system components

Functions such as return air temperature limit, summer compensation, manual set point cor rection or condensation detection can shift the set point.

Functions

Control method Exhaust air control (–> page 17) Sensor F2, exhaust air temperature

assignment of inputs AE1 to AE4

Parameters

Exhaust air temperature set point 22 °C 0 to 40 °C K

WE Configuration

OFF WE Range of values

0.5 0.1 to 99.9 60 sec 1 to 999 sec – – – – – – to 999 sec

Fb2 = ON or Fb18 = ON,

option:

AE3F2

5.1.3 Exhaust air temperature cascade control

The sensor input F2 is the control variable input for the exhaust air temperature and the sensor input F1 is the control variable input for the supply air temperature by default. Alternatively, the exhaust air temperature can also be guided over the analog input AE3 and the supply air temperature over the analog input AE1 to the controller. The exhaust air temperature control loop is implemented as a P control loop with adjustable

Exhaust air temperature set point

perature is controlled by a PID control algorithm with adjustable

slave loop.

Depending on the system code number, the supply air temperature control loop has between 1 and 3 sequence outputs that are adapted to the dynamics of the corresponding system components by means of the

Supply air temperature minimum limit

the set point shift which arises when the exhaust air temperature control loop takes influence on the supply air temperature control loop: Each deviation in exhaust air temperature by the amount x causes a shift of the supply air temperature set point by the amount x multiplied by the parameter

master loop

x = Exhaust air temperature set point – Exhaust air temperature actual value

Temperature set point of slave loop

Note!

If the calculated set point is not within the limit, the minimum or maximum limit applies as the new set point.

and

KPTemperature of the master loop

KP, T

and

Supply air temperature maximum limit -

calculated

+ x ·

KPTemperature master loop

control parameters. The parameters -

. The supply air tem-

Temperature set point of

restrict

KPTemperature of the

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Control methods and system components

Shifts in the set point which are caused by manual set point correction, return air tempera

ture limit, summer compensation or by condensation detection, have unrestricted effects on the exhaust air temperature set point.

Functions

Control method Exhaust air cascade control (–> page 17) Sensor F1, supply air temperature

assignment of inputs AE1 to AE4 Sensor F2, exhaust air temperature

assignment of inputs AE1 to AE4

Parameters

Exhaust air temperature set point 22 °C 0 to 40 °C Temperature set point of the slave loop 22 °C 0 to 50 °C KPTemperature master loop 1 0.1 to 99.9 Supply air temperature minimum limit 18 °C 0 °C up to Supply air temp. maximum limit Supply air temperature maximum limit 26 °C Supply air temp. minimum limit up to 50 °C K

WE Configuration

Fb1 = ON or

OFF

Fb18 = ON, Fb2 = ON or

OFF

Fb18 = ON,

WE Range of values

0.5 0.1 to 99.9 60 sec 1 to 999 sec – – – – – – to 999 sec

option

option:

: AE1F1

AE3F2

5.1.4 Room temperature control

The sensor input F5 is the control variable input by default. Alternatively, the room temperature can also be guided over the analog input AE3 to the controller. The room temperature is controlled by a PID algorithm with an adjustable

set point

. Depending on the system code number, the temperature control loop has between

1 and 3 sequence outputs that are adapted to the dynamics of the corresponding system

KP, T

and

components by means of the

control parameters. Functions such as return air

temperature limit, summer compensation, manual set point correction or condensation detec tion can shift the set point.

Functions

Control method Room control (–> page 17) Sensor F5, room temperature

assignment of inputs AE1 to AE4

WE Configuration

Fb5 = ON or

OFF

Fb18 = ON, option AE3F5

Room temperature

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Control methods and system components

Parameters

Room temperature set point 22 °C 0 to 40 °C K

WE Range of values

0.5 0.1 to 99.9 60 sec 1 to 999 sec – – – – – – to 999 sec

5.1.5 Room temperature cascade control

The sensor input F5 is the control variable input for the room temperature and the sensor

input F1 is the control variable input for the supply air temperature by default. Alterna tively, the room temperature can also be guided over the analog input AE3 and the sup ply air temperature over the analog input AE1 to the controller. The room temperature control loop is implemented as a P control loop with adjustable

Room temperature set point

is controlled by a PID control algorithm with adjustable

Depending on the system code number, the temperature control loop has between 1

loop.

and 3 sequence outputs that are adapted to the dynamics of the corresponding system components by means of the

air temperature minimum limit

point shift which arises when the room temperature control loop takes influence on the supply air temperature control loop: each deviation in room temperature by the amount x causes a shift of the supply air temperature set point by the amount x multiplied by the parameter x =

Supply air temperature set point

KPTemperature master loop

Room temperature set point

Supply air temperature set point + x · KPTemperature master loop

Note!

If the calculated set point is not within the limit, the minimum or maximum limit applies as

the new set point. Shifts in the set point which are caused by manual set point correction, return air tempera ture limit, summer compensation or by condensation detection, have unrestricted effects on the room temperature set point.

Functions

Control method Room cascade control (–> page 17) Sensor F1, supply air temperature

assignment of inputs AE1 to AE4 Sensor F5, room temperature

assignment of inputs AE1 to AE4

and

KPTemperature master loop

. The supply air temperature

Temperature set point of the slave

KP,T

and

Supply air temperature maximum limit -

control parameters. The parameters -

Supply

restrict the set

– Room temperature actual value

calculated

WE Configuration

Fb1 = ON or

OFF

Fb18 = ON, Fb5 = ON or

OFF

Fb18 = ON,

option:

AE1F1

AE3F5

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Control methods and system components

Parameters

Room temperature set point 22 °C 0 to 40 °C Temperature set point of the slave loop 22 °C 0 to 50 °C KPTemperature master loop 1.0 0.1 to 99.9 Supply air temperature minimum limit 18 °C 0 °C up to supply air temp. maximum limit Supply air temperature maximum limit 26 °C Supply air temp. minimum limit up to 50 °C K

WE Range of values

0.5 0.1 to 99.9 60 sec 1 to 999 sec – – – – – – to 999 sec

5.2 Humidity control in air-conditioning systems (Anl 6, 8 and 9)

In humidity control, various control methods are differentiated between: Supply air, exhaust air/room temperature control, exhaust air cascade control and room cascade control.

5.2.1 Supply air humidity control

The sensor input F6 is the control variable input by default. Alternatively, the analog input AE2 can be used. The supply air humidity is controlled by a PID control algorithm with an adjustable

humidity set point

. The humidity control loop can be used for just humidifying or for humidifying and dehumidifying depending on the control method. In humidifying and dehumidifying mode, the cooling coil is controlled in sequence to the humidifier. The requirements of the humidity control loop for dehumidifying and the temperature control loop for cooling are converted internally into a common control signal Y3 for the cooling coil. Each output can be adapted to the dynamics of the corresponding system components

KP, T

and

by means of the

control parameters that are adjustable.

A manual set point correction has an unrestricted effect on the control by the shifting the set point.

Supply air

Functions

Control method Supply air control (–> page 17) Sensor F6, supply air humidity

assignment of inputs AE1 to AE4

WE Configuration

Fb6 = ON or

OFF

Fb18 = ON,

option:

AE2F6

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Control methods and system components

Parameters

Supply air humidity set point 50 %rH 0 to 100 %rH K

WE Range of values

0.5 0.1 to 99.9 60 sec 1 to 999 sec – – – – – – to 999 sec

5.2.2 Exhaust air/room humidity control

The sensor input F7 is the control variable input by default. Alternatively, the analog input AE4 can be used. The exhaust air or room humidity control is implemented as a PID control algorithm with ad justable

Exhaust air humidity set pointorRoom humidity set point

can be used just for humidifying or for humidifying and dehumidifying depending on the control method. In humidifying and dehumidifying mode, the cooling coil is controlled in se quence to the humidifier. The requirements of the humidity control loop for dehumidifying and the temperature control loop for cooling are converted internally into a common control signal Y3 for the cooling coil. Each output can be adapted to the dynamics of the corresponding system components

KP, T

and

by means of the

control parameters that are adjustable. A manual set point

correction has an unrestricted effect on the control by the shifting the set point.

Functions

Control method Exhaust air/room control (–> page 17) Sensor F7, exhaust air/room control

assignmet of inputs AE1 to AE4

Parameters

Exhaust air humidity set point room humidity set point

WE Configuration

OFF

WE Range of values 50 %rH

50 %rH

0.5 0.1 to 99.9 60 sec 1 to 999 sec – – – – – – to 999 sec

Fb7 = ON or Fb18 = ON,

0 to 100 %rH 0 to 100 %rH

. The humidity control loop

option:

AE4F7

5.2.3 Exhaust air or room humidity cascade control

The sensor input F7 is the control variable input for exhaust air or room humidity and the sensor input F6 is the control variable input for supply air humidity by default. Alternatively, the analog input AE4 can be used for exhaust air or room humidity or the analog input AE2 for the supply air humidity.

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Control methods and system components

The master loop has a P control response with adjustable

Room humidity set point

by a PID control algorithm with adjustable

and

Kp Humidity master loop

Humidity set point of the slave loop

Exhaust air humidity set point

. The supply air control is implemented

. The humidity control loop can be used either just for humidifying or for humidifying and dehumidifying by involving the cooling coil in sequence to the humidifier. The requirements of the humidity control loop for dehumidifying and the temperature control loop for cooling are converted internally into one common control signal Y3 for the cooling unit. Each output can be adap

KP,T

ted to the dynamics of the corresponding system components by means of the

and

control parameters that are adjustable. The set point of the supply air humidity control loop is shifted depending on the system deviation in the exhaust air or room humidity control loop: Each deviation in humidity by the amount x shifts the supply air humidity set point by the amount x multiplied by the parameter

and

humidity minimum limit

x = Exhaust air humidity set point – Exhaust air humidity actual value

Humidity set point of the slave loop

Supply air humidity maximum limit

KPHumidity master loop

calculated

within the range

Supply air

Humidity set point of the master loop + x · KPTemperature of the master loop

Note!

If the calculated set point is not within the limit, the minimum or maximum limit applies as the new set point.

Functions

Control method Exhaust air/room cascade control (–> page 17) Sensor F6, supply air humidity

assignment of inputs AE1 to AE4 Sensor F7, exhaust air or room humidiy

assignment of inputs AE1 to AE4

Parameters

Exhaust air humidity set point room humidity set point

Humidity set point of the slave loop 50 %rH 0 to 100 %rH KPHumidity master loop 1.0 0.1 to 99.9 Supply air humidity minimum limit 40 %rH 0 %rF up to supply air humidity maximum limit Supply air humidity maximum limit 60 %rH Supply air humidity min. limit up to 100 %rH K

WE Configuration

Fb6 = ON oder

OFF

Fb18 = ON,

OFF

Fb7 = ON oder Fb18 = ON,

0 to 100 %rH 0 to 100 %r

WE Range of values 50 %rH

50 %rH

0.5 0.1 to 99.9 60 sec 1 to 999 sec – – – – – – to 999 sec

option:

AE2F6

AE4F7

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Control methods and system components

5.3 Inputs

The assignment of the inputs depends on the system code number and the control method (–> section 4). Sensors that are required for the selected control methods are always acti

vated. You must determined separately all the other sensors as well as the functions of the bi nary inputs by configuring them (–>section 2). Alternatively, you can also assign up to four analog inputs (0 to 10 V) to some of the resistance sensors. The analog inputs are suitable for active temperature, humidity and air quality sensors.

Functions

Assignment of inputs AE1 to AE4

WE Configuration OFF Fb18 = ON

AE_--: Not asssigned AE1F1: Supply air temp. F1 AE3F2: Exhaust air temp. F2 AE2F3: Outdoor temperature F3 AE3F5: Room temperature F5 AE2F6: Supply air humidity F6 AE4F7: Exh. air/room humidity AE4L: Air quality L

MIN: Lower measuring range value MAX: Upper measuring range value

5.4 Outputs

5.4.1 Heating coil

The heating coil is controlled from the control output Y1. The heating coil control is imple-

and

TV.

mented by a PID control algorithm with the adjustable parameters K

P,TN

ing action of the control output Y1 can be reversed. The default setting of the operating action: heating capacity 0 to 100 % = 0 to 10 V. An electric air heater can be controlled via the binary output BA5 subject to Y1 (–> sec tion 6.11.12).

The operat-

Control signal

– System deviation +

Fig. 14 · Output signal in Anl. 0

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Controlled variable

Page 45

Control methods and system components

Functions

Operating action Y1 OFF Fb21

Parameters

KPHeating coil 0.5 0.1 to 99.9 TNHeating coil 60 sec 1 to 999 sec TVHeating coil – – – – – – to 999 sec

WE Configuration

WE Range of values

5.4.2 Mixed air chamber

Mixed air chamber in sequential operation

The mixed air chamber is controlled from the Y2 output which can be adapted to the dynam ics of the mixed air chamber by means of the parameters

air chamber

TvMixed air chamber.

The parameter

and tees an minimum proportion of outdoor air. The operating action of the control output Y2 can be reversed. The default setting is an outdoor air rate of 0 to 100 % which corresponds to a control signal of 0 to 10 V. By activating Fb22, the operating action is reversed: the outdoor air rate 0 to 100 % then corresponds to 10 to 0 V. On feedforwarding the outdoor temperature, the summer time operation function is taken into account (–> section 6.10.3). By additionally feedforwarding the exhaust air temperature, the automatic reversal of the operating action takes effect.

If the operating action of the control output Y2 is automatically reversed due to changing temperatures, while the control is in the sequence range Y1 or Y3, the mixed air chamber is then reversed with a constant changing rate of 15 % per minute. If there is a considerable difference in temperature between exhaust air and extract air due to the heat given off by the fan, the extract air temperature can also be selected as the measured variable in place of the exhaust air temperature.

KpMixed air chamber,TNMixed

Minimum outdoor air rate

guaran-

Note:

The proportion of outdoor air can be suppressed during the warm-up phase with Fb43 = ON.

Functions

Sensor F7, mixed air or extract air temperature

Operating action Y2 OFF Fb22 Circ. air mode after system start-up OFF Fb43 (not with supply air control)

WE Configuration

Fb7 = ON, Fb7 = OFF,

option:

SEQ (with extract air sensor)

option:

SEQ (without extract air sensor)

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Control methods and system components

Control

signal

Control

signal

Without outdoor air and exhaust air/ extract air temperature feedforwarding

Y1 Y2 Y3

– System deviation +

With outdoor temperature feedforwarding

Y1 Y2 Y3

– System deviation +

Control variable

Outdoor temperature

Control

signal

With outdoor air and exhaust air/extract air temperature feedforwarding

tA > t Ab

Fig. 15 · Various output signals, e.g. in system code number 4

Parameters

WE Range of values KPMixed air chamber 0.5 0.1 to 99.9 TNMixed air chamber 60 sec 1 to 999 sec TVMixed air chamber – – – – – – to 999 sec Minimum outdoor air rate 20 % 0 to 100 %

tA < t Ab

Control variable

Outdoor temperature

Independent mixed air temperature control

The independent mixed air temperature control is implemented by a PID control algorithm with adjustable

Mixed air temperature set point.

the mixed air chamber with the parameters and

TVMixed air chamber

. The parameter

The output Y2 is adapted to the dynamics of

KPMixed air chamber,TNMixed air chamber

Minimum outdoor air rate

guarantees a mini

mum proportion of outdoor air. The operating action of the control output Y2 can be reversed. The default setting is an out

door air rate of 0 to 100 % which correspond to a control signal of 0 to 10 V. By activating the function block Fb22, the operating action is reversed: an outdoor air rate 0 to 100 % corresponds to 10 to 0 V. On feedforwarding the outdoor temperature, the summer time op eration function is taken into account (–> section 6.10.3). By additionally feedforwarding the exhaust temperature, the automatic reversal of the operating action takes effect.

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Control signal

Without outdoor and exhaust air temperature feedforwarding

Y2 Y1

Control methods and system components

– System deviation

With outdoor temperature feedforwarding

Outdoor temperature

Control variable

With outdoor and exhaust air temperature feedforwarding

Control

– System +

deviation

signal

Control variable

Outdoor temperature

tA > t Ab

tA < tAb

– System +

deviation

Control variable

Fig. 16 · Various output signals, e.g. in system code number 4

Note!

The proportion of outdoor air can be suppressed during the warm-up phase with Fb43 = ON.

Functions

Sensor F7, mixed air or extract air temperature Operating action Y2 OFF Fb22 Circulating air mode after system start-up OFF Fb43 (not with supply air control)

Parameters

KPMixed air chamber 0.5 0.1 to 99.9 TNMixed air chamber 60 sec 1 to 999 sec TVMixed air chamber – – – – – – to 999 sec Minimum outdoor air rate 20 % 0 to 100 % Mixed air temperature set point 18 °C 10 to 30 °C

WE Configuration

Fb7 = ON,

option:

WE Range of values

mixed air sensor

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Control methods and system components

Outdoor temperature-controlled mixed air chamber

For the outdoor temperature-controlled mixed air chamber, two outdoor temperature basic values are determined with the parameters

perature is smaller

and

100 % outdoor when the outdoor temperature is greater

in a characteristic curve for controlling the mixed air chamber. The parameter

door air rate

guarantees the required minimum proportion of the outdoor air.

Minimum outdoor air rate when the outdoor tem

which result

Minimum out

The summer time operation (–> section 6.10.3) is always available with this operation mode.

Control signal Y2 %

Outdoor temperature

Fig. 17 · Outdoor temperature-controlled mixed air chamber

Note:

The proportion of outdoor air can be suppressed during the warm-up phase with Fb43 = ON.

Functions

Sensor F7, mixed air or extract air temperature Operating action Y2 OFF Fb22 Circulating air mode after system start-up OFF Fb43 (not with supply air control)

Parameters

Min. outdoor air rate when the outdoor temperature is smaller

100 % outdoor air when the outdoor temp. is greater 18 °C –10 to 50 °C Minimum outdoor air rate 20 % 0 to 100 %

WE Configuration

Fb7 = OFF,

WE Range of values 0 °C –10 to 50 °C

option:

5.4.3 Heat recovery unit (HRU)

The heat recovery unit is controlled from the control output Y2. It is implemented by a PID control algorithm with the parameters

48 EB 5477 EN

KPHRU,TNHRU

and

TVHRU.

Page 49

Control methods and system components

Control signal

Control variable

Fig. 18 · Output signals, e.g. in system code number 6 (humidifier only)

The operating action of the control output Y2 can be reversed. The default setting is a heat recovery capacity of 0 to 100 % which corresponds to a control signal from 0 to 10 V. By activating the function block Fb22, the operating action is re

versed: HRU capacity 0 to 100 % then corresponds to 10 to 0 V. If the measured outdoor temperature and exhaust air temperature are available, the auto- matic reversal of the operating action for the heat recovery unit can be activated with Fb41 = ON.

Functions

Operating action Y2 OFF Fb22 Automatic reversal of the operating action OFF Fb41

Parameters

KPHRU 0.5 0.1 to 99.9 TNHRU 60 sec 1 to 999 sec TVHRU – – – – – – to 999 sec

WE Configuration

WE Range of values

5.4.4 Cooling coil

The cooling coil is controlled from the control output Y3. It is implemented by a PID control algorithm with the parameters K

Cooling coil,TNCooling coil

system code numbers 6, 8 and 9, the demands made by the humidity control loop for hu midifying or the temperature control loop for cooling are converted internally into one com mon control signal Y3 for the cooling coil. The operating action of the control output Y3 can be reversed. The default setting is a cooling capacity of 0 to 100 % which corresponds to a control signal from 0 to 10 V.

By activating the function block Fb23, the operating action is reversed: the cooling capacity 0 to 100 % then corresponds to 10 to 0 V.

and

TVCooling coil.

In the

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Control methods and system components

Control signal

Humidifying

– System deviation +

Fig. 19 · Output signals, e.g. in system code number 6 (humidifying and dehumidifying)

Dehumidifying

Heating

- System deviation +

Cooling

Control variable

Cooling can also be controlled using an on/off signal which is issued at the binary output BA4 (–> section 6.11.7). Control of a chiller is likewise possible (–> section 6.11.8).

Functions

Operating actionY3 OFF Fb23

Parameters

KPCooling coil 0.5 0.1 to 99.9 TNCooling coil 60 sec 1 to 999 sec TVCooling coil – – – – – – to 999 sec

WE Configuration

WE Range of values

5.5 Humidifier

The humidifier is controlled in system code number 6 from the control output Y2 and in system code numbers 8 and 9 from the analog output AA. The allocation of the control output Y2 to the humidifier shown in the controller display does not apply to system code numbers 8 and 9!

The humidifier control is implemented by a PID control algorithm with the parameters

midifier

TNHumidifier

and

TVHumidifier

The operating action of the control output Y2 can be reversed. The default setting is a humid ifier capacity of 0 to 100 % which corresponds to a control signal of 0 to 10 V. By activating the function block Fb22, the operating action is reversed: a humidifier capacity 0 to 100 % then corresponds to 10 to 0 V. The operating action at the analog output AA cannot be reversed.

Function

Operating action Y2 OFF Fb22

WE Configuration

KPHu

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Control methods and system components

Parameters

KPHumidifier 0.5 0.1 to 99.9 TNHumidifier 60 sec 1 to 999 sec TVHumidifier – – – – – – to 999 sec

Control signal

Fig. 20 · Output signals, e.g. in system code number 6 (humidifier only)

WE Range of values

Controlled variable

5.6 Fans with variable speed

The analog output AA can be used to control the speed of the fans and the air volume based on the air quality. If the air quality falls below the parameter ume is increased based on the When an exhaust air cascade control or a room temperature cascade control is used, the controller can be programmed so that the air volume is increased when the supply air temperature limit is reached to eliminate the system deviation as quickly as possible. This function has priority over the air quality control. After the system deviation has been balanced out, the air quality control is enabled again. The function is activated when the

change K

Example:

The supply air temperature has reached its minimum permissible value at 50 % air volume (y

Exhaust air temperature set point

Exhaust air temperature = 24 °C

Factor of change K

YYXDK

(XD is the percentage error in relation to the measuring range. Its maximum limit is 10 %)

is selected greater than 0.

= 50 %).

AA P

neu

=+ ⋅

=+°−°÷°⋅ ⋅50 24 22 40 100 5%% = 75%

CC C

()

Minimum air volume flow

= 22 °C

= 5

Air quality set point

, the air vol-

Factor of

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Control methods and system components

The system runs at an air volume of 75 % to reduce the excess temperature more quickly. The air quality control is implemented by a PI control algorithm with the parameters

and

quality control

TNAir quality control.

KPAir

The operating action of the air quality input can be reversed. The default setting is an air quality of 0 to 100 % which corresponds to an input signal of 0 to 10 V. L 0 means an insuf ficient air quality. By activating the function block Fb24, the operating action is reversed: air quality 0 to 100 % then corresponds to 10 to 0 V. As a result, L 0 means a very good air quality.

Functions

Assignment of inputs AE1 to AE4 OFF Request for externally required signal OFF Fb20 = OFF Variable air volume control over AA OFF

Operating action L OFF Fb24

Parameters

Air quality set point 50 0 to 100 KPAir quality control 0.5 0.1 to 99.9 TNAir quality control 60 sec 1 to 999 sec

WE Configuration

Fb18 = ON,

Fb39 = ON

25 %

0.0

* Factor of change with cascade control only WE Range of values

MIN AA (minimum air volume)/0to100%

(Factor of change) / 0.0 to 10.0*

option:

AE4L

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Control functions

6 Control functions

6.1 Supply air temperature limit

The intention of the supply air temperature limit is to reduce the draft when supply air that is fairly cold is blown in. The temperature range within which the supply air temperature may vary is determined by the parameters

temperature maximum limit

. If the supply air temperature is the control variable, i.e. for sup

Supply air temperature minimum limit

ply air temperature control or exhaust air or room temperature cascade controI, the control ler only permits set point shifts within this range. If F1 or AE1 is just used as a limit input, i.e. for exhaust air or room temperature control, this deviation is included in the control when the supply air temperature exceeds or fall below the limit values, to counter any further drifting of the supply air temperature.

Functions

Sensor F1, supply air temperature assignment of inputs AE1 to AE4

Parameters

Supply air temperature minimum limit 18 °C 0 °C up to supply air temp. maximum limit Supply air temperature maximum limit 26 °C Supply air temp. minimum limit up to 50 °C

WE Configuration

Fb1 = ON

OFF

Fb18 = ON,

WE Range of values

option:

AE1F1

and

Supply air

6.2 Supply air humidity limit

For exhaust air or room humidity control, the parameters and

Supply air humidity maximum limit

restrict the humidity range within which the supply air humidity may vary. If it leaves this range, the deviation is included in the system deviation to prevent any further drifting of the supply air humidity. The main purpose of the supply air humidity maximum limit is to prevent condensation form ing in the supply air duct.

Functions

Sensor F6, supply air humidity assignment of outputs AE1 to AE4

Parameters

Supply air humidity minimum limit 40 %rH 0 %rH up to supply air humidity max. limit Supply air humidity maximum limit 60 %rH Supply air humidity max. limit up to 100 %rH

WE Configuration

Fb6 = ON

OFF

Fb18 = ON,

WE Range of values

Supply air humidity minimum limit

option:

AE2F6

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Control functions

6.3 Return air temperature limit

The temperature range within which the return air temperature may vary is determined by the parameters

. If the return air temperature moves towards these limits, the set point is corrected (for

limit

the cascade control, the set point of the exhaust air or room temperature). In the range

turn air temperature minimum limit

Return air temperature limit factor

by the falls below. In the range ered by the amount x multiplied by the that the return air temperature exceeds.

Return air temperature falls below limit:

x =

4 4

Return air temperature minimum limit–Actual return air temperature

Supply air temperature set point

Return air temperature exceeds limit:

x =

Actual return air temperature–Return air temperature maximum limit

Supply air temperature set point

The supply air temperature limit function has priority.

Functions

Sensor F4, Return air temperature, heating coil

Parameters

Return air temperature minimum limit 20 °C 0 °C up to return air temperature maximum limit Return air temperature maximum limit 70 °C Return air temperature minimum limit up to 100 °C Return air temperature limit factor 1 0 to 10

Return air temperature minimum limit

, the set point is directly raised by the amount x multiplied

for every amount x that the return air temperature

Return air temperature maximum limit

Return air temperature limit factor

calculated

+ x ·

calculated

– x ·

Return air temperature limit factor

WE Configuration

WE Range of values

and

Fb4 = ON

Return air temperature maximum

, the set point is directly low

for every amount x

6.4 Variable return air temperature maximum limit

If an outdoor temperature sensor exists, it is possible to vary return air temperature limit. The following parameters apply for the upper variable limit of the return air temperature:

air temperature maximum limit coordinate 1, Outdoor temperature coordinate 1, Return air temperature maximum limit coordinate 2, Outdoor temperature coordinate 2.

The gray shaded area in Fig. indicates the permissible return air temperatures.

54 EB 5477 EN

Return

Page 55

Control functions

If the

Return air temperature maximum limit

is exceeded by the amount x, the set point (for cascade control, the set point of the exhaust air or room temperature) is reduced by the amount x multiplied with the

x = Actual return air temperature – Return air temperature maximum limit

Return air temperature limit factor.

Note! The permissible return air temperature maximum limit depends on the outdoor tem perature (see Fig. ) Supply air temperature set point

Supply air temperature set point

calculated

– x ·

Return air temperature limit factor

The supply air temperature limit has priority.

Parameters

Return air temperature minimum limit 20 °C 0°C up to return air flow temp. maximum limit Return air flow temperature maximum li

mit, coordinates 1 and 2 Return air temperature limit factor 1 0 to 10 Outdoor temperature coordinate 1 5 °C –50 to 20 °C Outdoor temperature coordinate 2 20 °C –50 to 20 °C

WE Range of values

70 °C Return air temperature minimum limit up to 100 °C

6.5 Sustained room temperature

If a room temperature sensor is connected, the

Sustained room temperature

is monitored when the system is in the reduced operation mode. If the room temperature falls below this limit value, at first the system start-up function is initiated. Then the supply air temperature is controlled constantly to the set point the room temperature has reached the

Supply air temperature maximum limit

Sustained room temperature

(plus 2 °C), the sustained

(minus 1 °C). If

room temperature function and usually the operation of the entire system is ended.

Functions

Sensor F5, room temperature Fb5 = ON

Parameters

Room sustained temperature 15 °C 0 to 20 °C Supply air temperature minimum limit 26 °C Supply air temperature minimum limit up to 50 °C

WE Configuration

WE Range of values

EB 5477 EN 55

Page 56

Control functions

Set point °C

Outdoor temperature °C

Fig. 21 · Summer compensation

6.6 Night purge

During the times-of-non-use, the night air can be used to cool the rooms under certain conditions: the fan operation (speed 1) is enabled and, if necessary, the mixed air chamber is reversed to 100 % outdoor air rate. The night purge is only enabled when the summer deacti- vation function (–> section 6.10.2) is active and, in addition, the following conditions are met:

Room temperature is greater than the room temperature limit

and Temperature difference between room temperature and the outdoor temperature is

greater than the value set under

Temperature difference to outdoor temperature

The night purge can be set to start at 0:00 hrs at the earliest, 4:00 hrs at the latest – depending on the programmed system times-of-use. The controller must be programmed to start the night purge at the latest possible point in time. It is limited to two hours at the maxi mum. If the room temperature falls below the room temperature limit value determined under

Finish night purge (STOP),

the night purge is ended early.

Enable night purge (START

)

Functions

Night purge OFF

WE Configuration

24 °C 18 °C 5 °C

56 EB 5477 EN

Fb10 = ON START / STOP up to 50 °C

STOP / 10 °C up to START Temperature difference to outdoor temp./0to50°C

Page 57

Control functions

6.7 Summer compensation

The function is basically available for all systems with a cooling coil (Anl 1, Anl 4 to Anl 9): This summer compensation function lets the temperature set points for supply air, exhaust air and room be shifted in a linear manner by means of two coordinates. For this purpose, the following parameters must be defined:

Summer compensation when the outdoor temperature is greater

perature onwards, the temperature set point is raised

Set point at an outdoor temperature of 32 °C

curve.

Example:

In an air-conditioning system, the supply air temperature set point should be raised when the outdoor temperature is greater than 25 °C. At 32 °C, the supply air temperature set point should be 26 °C.

Supply air temperature set point = 22 °C

Summer compensation when the outdoor temperature is greater = 25 °C

Set point at an outdoor temperature of 32 °C

determines the gradient of the characteristic

= 26 °C

: from this outdoor tem

Parameters

Summer compensation when the outdoor temperature is greater

Set point at an outdoor temperature of 32 °C 26 °C 0 to 40 °C

WE Range of values 26 °C –50 to °C

6.8 Fan operation dependent on room temperature/room humidity

You can select this function with room temperature control, room temperature cascade con trol, room humidity control, room humidity cascade control or with room humidity measure ment (Fb7 = ON or Fb18 = ON (AE4F7)) or with a two-speed fan operation or with variable air volume control. The fan speed 2 is activated, parallel to the associated times-of-use, depending on the room temperature and/or room humidity or the fan speed increases depending on the room tem perature and/or room humidity. In systems that have a mixed air chamber, the outdoor air rate is additionally increased if the set point of the room humidity is exceeded.

Functions

Two-speed fans over BA2/BA3 OFF

WE Configuration

Fb11 = ON (for two-speed fans) BA2 = BA3 = ON (–> page 63)

BA2 = OFF, BA3 = ON (–> page 63)

0 sec

Delay time / 0 to 60 sec

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Control functions

Variable air volume control over AA OFF

25 %

0.0

Fan operation dependent on room temperature or room humidity

OFF

5 °C 5 %rH

* Factor of change with cascade control only

Fb39 = ON (for variable air volume control) MIN AA (minimum air volume)/0to100%

(Factor of change) / 0.0 to 10.0*

Fb42 = ON MIN: Reaction when limit is not reached

MAX: Reaction when limit is exceeded Difference room temperature set point/ 1 to 10 °C

Difference room humidity set point/ 1 to 10 %rH

6.9 Air quality control via the mixed air chamber

The air quality control via the mixed air chamber function is available in the systems with code numbers Anl 2, Anl 4 and Anl 8. The control signal Y2 is formed from two control sig nals that exist internally and originate from the temperature control loop and the air quality control loop. If the measured air quality falls below the value

Air quality set point

door air rate determined until then just by the temperature control loop is increased dependent on the control parameters mal conditions, i.e. the

KPAir quality control

Air quality set point

ally reduced by the PI control algorithm until it reaches

and

TNAir quality control

is exceeded, the outdoor air rate can be gradu-

Minimum outdoor air rate

the temperature control loop does not demand the opposite.

Functions

Assignment of inputs AE1 to AE4, 0to10V

Parameters

Air quality set point 50 1 to 100 KPAir quality control 0.5 0.1 to 99.9 TNAir quality control 60 sec 1 to 999 sec Minimum outdoor air rate 20 % 0 to 100 %

WE Configuration OFF

FB18 = ON,

WE Range of values

option:

AE4L

, the out-

. Under opti-

, provided

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Control functions

6.10 Outdoor temperature-compensated control

6.10.1 Outdoor temperature-compensated supply air control

The function is basically available in systems with cooling coil and, additionally, in system Anl 0. The function of summer compensation (–> section 6.7) can also be used for an out door temperature-compensated supply air control. The

door temperature is greater

Supply air temperature set point

the

ture of 32 °C

Example:

A heating coil is to heat the supply air to 35 °C when the outdoor temperature is −15 °C . The foot of perpendicular is to be at 15 °C outdoor temperature / 20 °C supply air temperature.

Supply air temperature set point

Summer compensation when the outdoor temperature is greater

Set point at an outdoor temperature of 32 °C

Supply air temperature minimum limit

Foot of perpendicular outdoor temperature = e = 15 °C

The calculation of the temperature required for the parameter

perature of 32 °C

parameter determines also the gradient of the characteristic curve.

results in:

parameter determines from which outdoor temperature onwards

should be reduced. The

= a = 35 °C

= d = 20 °C

c = a – (32 °C – b) · (a – d) / (e – b) = 11.5 °C

Summer compensation when the out

Set point at an outside tempera

= b = − 15 °C

= c

Set point at an outdoor tem-

Set point °C

Fig. 22 · Outdoor temperature-compensated supply air control

Parameters

Summer compensation when the outdoor temp. is greater 26 °C –50 to 40 °C Set point at an outdoor temperature of 32 °C 26 °C 0 to 40 °C Supply air temperature set point 22 °C 0 to 50 °C

WE Range of values

Outdoor temperature °C

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Control functions

6.10.2 Summer deactivation

In summer, the heating coil is switched off when the daily mean outdoor temperature (mea sured every hour between 6:00 and 22:00 hrs) is above the

Outdoor mean temperature

within a defined time period. If the summer deactivation is active, the heating coil is switched off at 22:00 hrs for the next 24 hours, i.e. control signal Y1 = 0 % and pump output BA1 = OFF. If the outdoor temperature falls below the set limit value, the heating coil control is en

abled from 22:00 hrs for the next 24 hours, providing this is required from the times-of-use or the operating mode switch.

Parameters

Date when summer deactivation is enabled 01.06 01.01 to 31.12 Date when summer deactivation is disabled 30.09 01.01 to 31.12 Outdoor mean temperature 18 °C 0 to 30 °C

The

Outdoor mean temperature

can be read in the operating level in the outdoor tempera-

WE Range of values

ture current reading by holding the enter key pressed down. The bar graph under the row of numbers 1 to 24 indicates the number of already measured outdoor temperatures used to calculate the mean temperature. The number in front of the mean temperature indicates whether the Summer decativation is enabled (1) or disenabled (0).

6.10.3 Summer time operation

The summer time operation function runs in all systems that have a mixed air chamber and outdoor temperature feedforward (Anl 2, Anl 4, Anl 8). When the outdoor temperatures exceed the limit value

Summer time operation when the outdoor temperature is greater

system is operated with a minimum outdoor air rate to avoid operation with 100 % outdoor air. Summer operation can also be used in systems with cooling coil in which it is better to prevent operation with just outdoor air at high outdoor temperatures for reasons of energy efficiency.

Parameter

Summer time operation when the outdoor temperature is greater:

WE Range of values 22 °C 0 to 40 °C

, the

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Control functions

6.11 Control functions

6.11.1 System start-up

Usually, all ventilation systems go over to standard operation first after a start-up phase when a request for operation exists from deactivated state or from manual operation. The duration of the start-up is determined by the parameter

. Two options exist to suppress the start-up partially or totally:

start-up

1. Pump advance running time for start-up

2. When the outdoor temperature is fedforward, the outdoor temperature must be smaller than the parameter

If the ventilation system goes into operation according to the programmed times-of-use, then the start-up function already starts to run before the time-of-use commences by the time pe riod set in time-of-use starts. If, however, the ventilation system is required to run by an external request for operation or by the operating mode selector switch, the fans are first enabled after a time delay set in

Pump advance running time for start-up

By enabling the heating coil circulation pump, the control signal Y1 for the heating coil is enabled at the same time:

All other control outputs − also the control output Y2 of an independent mixed air tempera ture control − usually do not run a control signal during the system start-up. The control out put Y2 is enabled when the fans are enabled. Before the control output Y3 (cooling coil) can be enabled, the In the supply air control loop, the set point. Within five minutes, this value is led linearly to the current supply air set point.

Pump advance running time for start-up.

Without the temperature sensor F4 in the heating coil return flow, the control output Y1 runs either 100 % control signal or is set to the fixed value under

. The

With the temperature sensor F4 the value set under

or Return air temperature maximum limit coordinate 1

the heating coil during the start-up phase. Y1 varies corresponding to the system devia tion. The system start-up function is cancelled when the fixed heating coil return air tem perature is reached when the operation of the system has been demanded by the operat ing mode selector switch or over the binary input.

Control signal limit for Y1

Start-up mode when the outdoor temperature is smaller

Pump advance running time for start-up

Supply air temperature maximum limit

= 0

only has any effect when the start-up function is active.

Pump advance running time for

The fans are enabled exactly when the

Control signal limit for

Return air temperature maximum limit

is the set point for the warm-up of

must be run through a second time.

is set at first as the

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Control functions

Note: An active system start-up is indicated in the operating level by the blinking symbol. Dur ing this operating phase, you cannot view the master or slave loop set points: in the operat ing level – – – – appears on the display at the corresponding places!

Parameters

Pump advance running time for start-up 300 sec 0 to 900 sec Start-up mode the outdoor temperature

is smaller Control signal limit for Y1 100 % 0 to 100 % Return air temperature minimum limit 70 °C Return air temperature maximum limit up to 100 °C Supply air temperature minimum limit 26 °C Supply air temperature maximum limit up to 50 °C

WE Range of values

5 °C 0 to 10 °C

6.11.2 Circulating air mode after system start-up

After the system start-up has finished, first the circulating air mode is run until the room or exhaust air temperature set point (±0.5 °C) has been reached. This function can be selected in systems with a mixed air chamber (Anl 2, Anl 4, Anl 8), with room or exhaust air temperature control and in systems that have room cascade control or exhaust air cascade control.

Function

Circulating air mode after system start-up OFF Fb43 = ON

WE Configuration

6.11.3 Enabling fan speed 1

Usually, the fan speed 1 is enabled over the binary output BA2 at the programmed start of the time-of-use (times-of-use of the system). The system start-up has already been completed, if necessary, at the time period set under

Pump advance running time for start-up

time-of-use starts. When a request for an externally required signal is issued, the fan speed 1 is possibly enabled with a delay due to the system start-up. If the outdoor air/extract air damper is additionally to be controlled over BA2, it will be nec essary to determine in function block Fb11 that BA2 also remains activated when fan speed 2 is in operation. In case of the malfunctions “system frost protection” or “missing fan feedback”, the fans are deactivated immediately.

Parameter

Pump advance running time for start-up 300 sec 0 to 900 sec

WE Range of values

before the

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Control functions

6.11.4 Enabling fan speed 2

The fan speed 2 is controlled via the binary output BA3. It is enabled either:

4 4 4 4

Times-of-use for fan speed 2

by an external demand for fan speed 2, dependent on the air quality, for room temperature control or room temperature cascade control dependent on the

room temperature and/or when Fb7 is activated dependent on the room humidity. After fan speed 2 has been demanded when the system is in stand-by, first fan speed 1 is enabled; speed 2 is only enabled after the switched back to speed 1, the fans are switched off; speed 1 is only enabled after the

has elapsed.

time

Delay time

The

Functions

Two-speed fans over BA2/BA3 OFF

The following applies:

is still taken into account even if the fans are activated in manual operation mode.

Delay time

WE Configuration

0 sec

2423222120191817161514131211109876542103 2423222120191817161514131211109876542103

(1) BA2 = BA3 = ON

has elapsed. When the speed 2 is

Fb11 = ON BA2 = BA3 = ON

BA2 = OFF, BA3 = ON Delay time / 0 to 60 sec

Delay

2423222120191817161514131211109876542103 2423222120191817161514131211109876542103

(2) BA2 = OFF, BA3 = ON

Note!

If the outdoor air/extract air damper should additionally be controlled over BA2, it will be necessary to determine that BA2 also remains activated when fan speed 2 is in operation.

Activating the fan speed dependent on the air quality

If the air quality falls below the manded. The fans are switched back to fan speed 1 when the air quality has risen to a value greater than schedule for “Fan speed 2” or the external demand for fan speed 2 do not require the oppo site.

Air quality set point+Differential gap of speed 2 –> 1

Air quality set point

, the operation of fan speed 2 is de

, provided that the time

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Control functions

Functions

Assignment of inputs AE1 to AE4 OFF

Parameters

Air quality set point 50 0 to 100 Differential gap of speed 2 -> 1 5 5 to 30

WE Configuration

Fb18 = ON,

WE Range of values

option:

AE4L

6.11.5 Fan operation feedback

The operation feedback of the fans can be evaluated with the binary input BE2. If the floating BE2 input makes contact – after the fans are enabled and the delay time has elapsed – the

STOP

ventilation system is deactivated.

blinks on the display. First when the next time-of-use

starts, a new attempt to start is made automatically.

Functions

Fan operation feedback to BE2 OFF

WE Configuration

Fb14 = ON

180 sec

START (delay time) / 0 to 180 sec

Note!

To start the deactivated system manually, switch the operating mode switch briefly from automatic operation to reduced operation and back again to trigger an external demand for operation or press an external key intended for this purpose (confirm the fault by closing BE2) for at least one second.

6.11.6 Enabling the cold storage

In all systems with cooling coil, the binary output BA4 can be used to enable the charging of

a cold storage. If the outdoor temperature measured over an hour exceeds the value

abling the cold storage at outdoor temperature

(

START

), BA4 is switched on. If the value falls

below the limit for an hour, BA4 is switched off.

Functions

Cold storage OFF

WE Configuration

Fb12 = OFF

18 °C

START (enabling the cold storage ) / 0 to 30 °C

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Control functions

6.11.7 Controlling the direct expansion evaporator

In all systems with cooling coil, the binary output BA4 can be activated dependent on the control signal Y3. The control signal Y3 is available parallely with this function.

Function

BA4 dependent on Y3 OFF

WE Configuration

Fb12 = ON,

30 % 10 %

START (activating value) / STOP up to 100 % STOP (deactivating value) / 0 % up to START

option:

SEQ

6.11.8 Controlling the chiller

In all systems with cooling coil (not Anl 7), a chiller can be run to overlap, i.e. parallely to the other system elements operating in sequence. As soon as a low temperature is requested, the chiller is activated at least for the period determined under

(START MIN

). The other system elements can be requested parallely to the chiller. An excess

amount of cold air is at first compensated with HRU and heating coil. If the heating coil con-

STOP

trol signal Y1 exceeds the value

(deactivation of cooling at Y1 >), the chiller is switched off at least for the time period determined under time). When the outdoor temperature is fedforward, the chiller basically is only enabled when the outdoor temperature is 3 °C higher than the current set point − with a cascade control, 3 °C higher than the current supply air set point. A chiller that is running is deactivated when Y1 > 0 % observing the

Minimum activation time (START MIN),

ture is smaller than the set point; with outdoor temperatures higher than the set point depending on the parameter

Function

Controlling the chiller OFF

Deactivate cooling (STOP)

WE Configuration

600 sec 600 sec 50 %

Fb12 = ON, START MIN (min. activation time)/ 0, 60 to 3600 sec

STOP MIN (min. deactivated time)/ 0, 60 to 3600 sec STOP (Deactivation of cooling at Y1 >)/0to100%

. The control signal Y3 is not available.

option:

Minimum activated time

STOP MIN

(minimum deactivated

if the outdoor tempera-

PAr

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Control functions

6.11.9 Condensation detection

In all systems with cooling coil with a dehumidifying function, a condensation monitor can be activated for chilled ceilings. As soon as condensation is detected in standard operation, the set point of the control is raised by 3 °C. If the condensation monitor indicates normal state again, the set point correction is reset.

Function

Condensation detection OFF

WE Configuration

Fb40 = ON, STEIG: Reaction to make contact

FALL: Reaction to break contact

option:

BE4, BE7

Note!

After selecting Fb40 = ON, only one input appears on the display, the binary input BE4 or BE7 is already being used somewhere else.

6.11.10 Circulation pump control for the heating coil

The circulation pump of the heating coil is controlled by the binary output BA1. If the system goes into operation due to the time schedule of the ventilation with the system start-up function, the circulating pump is switched on before the time-of-use starts at the time set under

Pump advance running time for start-up.

Without the system start-up, the circulation pump is activated at the earliest when the time-of-use begins. In systems with an outdoor temperature sensor, the circulation pump’s operation depends on the parameter

Start-up when the outdoor temperature is lower

outdoor temperature is above this limit value and the control signal Y1 is 0 % for approxi mately three minutes, the circulation pump is switched off. First when Y1 > 0 %, it is activated again. At the start of a time-of non-use (system deactivation) the circulation pump of the heating coil is switched off after three minutes lag time, provided there is no demand for operation from the functions, stand-by monitoring or stand-by control. During the summer deactivation, the circulation pump of the heating coil is basically switched off. It is activated daily for approx imately one minute to prevent it from becoming jammed up.

Parameters

Start-up when the outdoor temperature is lower

Pump advance running time for start-up

WE Range of values 5 °C 0 to 10 °C

300 sec 0, 60 to 900 sec

: If the

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Control functions

6.11.11 Circulation pump control for the HRU

In systems with connected heat recovery unit (Anl 3, Anl 5 and Anl 9) the binary output BA5 controls the HRU pump. This pump is only activated when the control signal is Y2 > 0 %. If Y2 is 0 % for longer than three minutes when the system is in operation, the circulation pump is deactivated. First when Y2 > 0 % it is activated again. If the time-of-use ends, the HRU pump is deactivated after three minutes. The HRU pump is activated at least once for approximately one minute every 24 hours to prevent it from becoming jammed up.

6.11.12 Electric air heater

The binary output BA5 can also be used to control an electric air heater in on/off operation instead of the HRU pump. BA5 is then controlled depending on the control signal Y1. The control signal Y1 is available parallely!

Function

BA5 dependent on Y1 OFF

WE Configuration

FB38 = ON

30 % 10 % 10 sec

START (activating value) / STOP up to 100 % STOP (deactivating value) / 0 % up to START Lag time of the fans / 0 to 60 sec

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System-wide functions

7 System-wide functions

7.1 Switchover between summer time and winter time

The controller switches automatically between summer time and winter time. The summer time is set to begin on the last Sunday in March at 2:00 a.m. and winter time to begin on the last Sunday in October at 3:00 a.m.

Function

Switchover between summer time and winter time

WE Configuration

OFF Fb16 = ON

7.2 Frost protection

7.2.1 System frost protection

This function is used to protect the heating coil from being damaged by frost. Depending on the binary input BE3, the system runs or frost protection function is run. If BE3 input makes contact, the frost protection function starts: the fans are deactivated and the circulation pump of the heating coil is activated; a 100 % signal is issued at the control output of the heating coil Y1.

STOP

When the frost protection function is active, The frost protection function is also active in manual operation mode.

Function

System frost protection with BE3 OFF Fb15 = ON

and the symbol blink on the display.

WE Configuration

7.2.2 Frost protection HRU

The function “Frost protection HRU” makes sure when the system is running that the heat re covery unit does not freeze on the outside. If the HRU return air temperature falls below or alternatively the extract air temperature measured directly at the heat recovery unit falls be low the parameter started: the heat recovery unit is released from the sequential operation. The programmed limit value is used as the set point for an independent temperature control of this unit to make sure that further cooling off does not occur. The frost protection HRU remains active until the control signal Y2 for heat recovery has risen to a value of 95 %; directly after that, the se quential operation is reactivated. When the frost protection mode for HRU is active, the sym bol blinks on the display.

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Heat recovery minimum temperature

, the frost protection function is

Page 69

System-wide functions

Function

Sensor F6, return flow temperature HRU Fb6 = ON

Parameter

Heat recovery minimum temperature 3 °C 1 to 10 °C

WE Configuration

WE Range of values

7.2.3 Stand-by monitoring

The outdoor temperature (F3/AE2) is required for this function. The circulation pump of the heating coil is activated outside of the times-of-use whenever the outdoor temperature falls below the value

Pump ON when the outdoor temperature is smaller.

If the stand-by monitor

ing is active, the symbol appears on the display of the controller in the operating level.

Function

Sensor F3, outdoor temperature assignments of inputs AE1 to AE4

Parameter

Pump ON when the outdoor temperature is smaller

WE Configuration

OFF WE Range of values

0 °C –50 to 10 °C

Fb3 = ON Fb18 = ON,

option:

AE2F3

7.2.4 Stand-by control

If the outdoor temperature sensor (F3/AE2) and a return air temperature sensor (F4) exist, the value

Return air temperature minimum limit

protection in addition to the stand-by monitoring function during times-of-non-use. An active stand-by control is indicated in the operating level of the controller by the symbol appearing on the display.

Functions

Sensor F3, outdoor temperature assignments of inputs AE1 to AE4

Sensor F4, return flow temperature of heating coil

in the heating coil is controlled for the frost

WE Configuration

OFF

Fb3 = ON Fb18 = ON,

Fb4 =ON

option:

AE2F3

7.3 Forced-operation of the pumps

If the connected pumps have not run during the past 24 hours, a force-operation of the pumps is started to prevent them from jamming.

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System-wide functions

7.4 External correction of the temperature set point

The set point can be changed at the set point correction switch or by a potentiometer con

nected to input F8. The potentiometer F8 and the set point correction switch both have an ef fect on the temperature set points. The set point is changed at the correction switch in ±1 °C steps from one to the next switch position. A correction is possible in the range from –5 °C (potentiometer setting 1000Ω) to +5 °C (potentiometer setting 2000Ω) provided the supply air temperature limitation in a supply air temperature control permits it.

Function

F8, temperature set point potentiometer OFF Fb8 = ON

WE Configuration

7.5 External setting of the outdoor air rate

The outdoor air rate can be determined at the input F9 with a potentiometer. The outdoor air rate is then determined between the value

Minimum outdoor air rate (

potentiometer setting

1000Ω) and 100 % (potentiometer setting 2000Ω).

Function

F9, outdoor air rate potentiometer OFF Fb9 = ON

Parameter

Minimum outdoor air rate 20 % 0 to 100 %

WE Configuration

WE Range of values

7.6 External correction of the humidity set point

In all air-conditioning systems, the humidity set point can be determined at the input F9 with a potentiometer. The humidity set point is then determined between –20 % rH (potentiometer setting 1000Ω) and + 20 % rH (potentiometer setting 2000Ω), provided the supply air limit and supply air humidity control allow it.

Function

F9, humidity set point potentiometer OFF Fb9 = ON

WE Configuration

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7.7 External setting of the air volume

System-wide functions

If the function blocks Fb39 and Fb13 are activated, i.e. variable air volume control and ex ternal demand for operation are configured, a potentiometer at input F12 can be used to

trigger an external demand for operation and the air volume can be set. The air volume can be predetermined between the value F12 is evaluated as follows:

Resistance 1000 to 2000Ω:

System operation required. Minimum air volume determined by the potentiometer (potentiometer setting 2000Ωequals 100 %). Resistance∞(= BE1 open):

System operation according to the times-of-use. Minimum air volume determined by the controller setting.

Functions

External demand of operation with BE1 and BE4

Request for externally required signal OFF Fb20 = OFF Variable air volume control over AA OFF

Minimum air volume

WE Configuration OFF Fb13 = ON

25 %

0.0 * Factor of change for cascade contro only

(MIN AA) and 100 %.The input

Fb39 = ON MIN AA (min. air volume) / 0 to 100 %

(Factor of change)/ 0.0 to 10.0*

7.8 External demand for operation

The operation of the ventilation can be controlled with the binary inputs BE1 and BE4. If the operating mode switch is set to automatic operation ( ), the binary inputs BE1 and

BE4 have the following effect:

BE1 and BE4 = OFF: Operation of the system corresponding to the times-of-use

BE1 = ON, BE4 = OFF: Operation of the system, even outside of the times-of-use

BE1 = OFF, BE4 = ON: System out of operation, even within the times-of-use

If the operating mode switch is set to reduced operation ( ), only BE1 is relevant for the ex ternal demand for operation:

BE1 = OFF: System out of operation

BE1 = ON: Operation of the system corresponding to the times-of-use

The system starts to run, if necessary, taking into account the system start-up function.

Function

External demand for operation with BE1 + BE4 OFF Fb13 = ON

WE Configuration

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System-wide functions

7.9 External demand for fan speed 2

The fan speed 2 can be demanded via the binary inputs BE4 or BE7. The following applies:

2423222120191817161514131211109876542103 2423222120191817161514131211109876542103

(1) Fan speed 2 can only be switched on if the system is

already in operation

2423222120191817161514131211109876542103 2423222120191817161514131211109876542103

(2) BE4/BE7 = ON starts the system operation with fan

speed 2

Functions

2-speed fans over BA2/BA3 OFF

External demand for fan speed 2 OFF Fb19 = ON

WE Configuration

Fb11 = ON BA2 = BA3 = ON (–> page 63)

BA2 = AUS, BA3 = ON (–> page 63)

0 sec

Delay time / 0 to 60 sec

BE4 (1), (2): Speed 2 demanded over BE4 BE7 (1), (2): Speed 2 demanded over BE7

Note: If the functions External demand for operation (Fb13 = ON) and External demand for fan speed 2 with BE4 (Fb19 = ON, BE4) are configured, the input BE4 loses the function descri

bed in section 7.8 (system OFF) as a result.

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System-wide functions

7.10 External selection of the operating mode

7.10.1 External selection of the operating mode using the four-staged switch

The operating mode of the ventilation can be determined by an external switch (–> Fig. 24) with four switch positions (OFF, Automatic operation, Fan speed 1 = ON, Fan speed 2 = ON). For this, the operating mode switch must be set to automatic operation ( ).

TROVIS 5477

Fig. 23 · Example for the selection of the operating mode with an external switch

BE 1

BE 4

BE 7

Functions

2-speed fans over BA2/BA3 OFF

WE Configuration

Fb11 = ON BA2 = BA3 = ON ( –> page 63)

BA2 = OFF, BA3 = ON (–> page 63)

0 sec

Delay time / 0 to 60 sec External demand for operation with BE1 + BE4 OFF Fb13 = ON External demand for fan speed 2 OFF

Fb19 = ON,

option:

BE7*

* BE7 recognizable from the square at the bottom right of 7

7.10.2 External selection of the operating mode using Type 5257-6 Room Panel

The ventilation operating mode can be determined using the Type 5257-6 Room Panel for wall mounting (Fig. 24).

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System-wide functions

TROVIS 5477

Type 5257-6 Room Panel

Type 5257-6 Room Panel (dimensions in mm)

Fig. 24 · Connecting the Type 5257-6 Room Panel

It is possible to use the room panel to correct a temperature set point or to select an operating mode when it is wired as shown above.

Temperature set point correction by ±5 °C

Selecting the operating mode:

0 Operation of system according to the times-of-use or

plant OFF outside of the times-of-use

I Operation of system with fan speed 1 also outside of the times-of-use;

fan speed 2 according to the times-of-use for fan speed 2

II Operation of system with fan speed 2, also outside of the times-of-use

for fan speed 2

The operating mode selection switch on the ventilation controller must be set to the automatic operation ( ).

Functions

2-speed fans over BA2/BA3 OFF

External demand for operation with BE1 + BE4 OFF Fb13 = ON External demand for fan speed 2 OFF * BE4 recognizable from the squares at the bottom right of 1 and 7

WE Configuration

Fb11 = ON BA2 = BA3 = ON ( –> page 63)

BA2 = OFF, BA3 = ON (–> page 63)

0 sec

Delay time / 0 to 60 sec

Fb19 = ON,

option:

BE4*

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System-wide functions

7.11 Request for externally required signal

In complex systems, the controller can request the flow temperature required from a primary controller. The required flow temperature is requested at the analog output AA by using a 0 to 10 V signal. 0 to 10 V correspond to 0 to 120 °C. If the heating coil control signal exceeds the limit value for the externally required signal is increased gradually until the value

is reached. When the value falls below the limit value

MAX

Change when Y1 MAX

Flow requirement

Change when Y1 MIN

quest for the externally required signal is, in turn, gradually reduced until the set value is be low

MIN AA

. When the system is inactive, the output for the request for the externally re quired signal is always at 0 V. A new operating phase is started with the same request for the externally required signal that it ended with; when operation starts with the start-up func tion, the temperature set under

MAX AA

is always requested.

, the request

the re

Control signal Y1 %

Externally required

signal °C

Fig. 25 · Request for the externally required signal

Function

Request for externally required signal OFF

WE Configuration

90 °C 90 °C 10 % 90 %

t [s]

Fb20 = ON MIN AA (flow requirement) / 0 to 120 °C

MAX AA (flow requirement)/0to120°C MIN (change when Y1) / 0 to 100 % MAX (change when Y1) / 0 to 100 %

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System-wide functions

7.12 Outdoor temperature output

If the analog output AA is not required for air volume control or the request for the externally required signal and Anl 8 or Anl 9 is not selected, the outdoor temperature is issued as a 0 to 10 V signal at the analog output AA. The outdoor temperature can be measured either with a temperature sensor at F3 or alternatively using an analog input. The measuring range is permanently allocated: 0 to 10 V = –40 to +50 °C. The outdoor temperature can be passed on to other controllers using this function.

Functions

Request for externally required signal OFF Fb20 = OFF Variable air volume control over AA OFF Fb39 = OFF

WE Configuration

7.13 Locking settings

The controller is protected against unwanted configuration and parameterization. First when this function is inactivated, the settings in the controller can be changed. The settings for time and date, times-of-use (for vacations and public holidays as well), the set points for supply air, exhaust air and room temperatures as well as the set points of the slave loop are not affected by the locking function. The locking function is inactivated by switching it off.

Function

Locking settings OFF Fb37 = ON

WE Configuration

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Malfunctions

8 Malfunctions

Interruptions or short circuits in the sensor wiring along with other malfunctions are indicated on the display with the blinking symbol . Additionally, they are indicated over the fault in dication output BA6. In the operating level, measured value when a sensor has failed.

Fault alarm output

The binary output BA6 is an open collector output. Er It is activated when the error status register is > 0. A maximum of 24 V DC may be applied to this output; the electric current should not exceed 10 mA when being switched.

– – – –

appears on the display instead of a

8.1 Sensor failure

The controller reacts to a fault as described below:

Supply air control:

When the supply air sensor fails, all control outputs run a 0 % control signal and the binary outputs for pumps and fans maintain their operating states; when the frost protection is active, the fans are switched off. Exhaust air or room control (without supply air sensor):

When the exhaust air or room sensor fail, all control outputs run a 0 % control signal and the binary outputs for pumps and fans maintain their operating status; when the frost protection is active, the fans are switched off. Exhaust air or room control/cascade control (with supply air sensor):

Control to supply air maximum limit When other sensors fail, the system operation is fixed as if these sensors have not been

configured.

8.1.1 Status register (FSR)

If one of the function blocks Fb25 to Fb36 is activated, the messages of the corresponding bi nary inputs BE01 to BE12 are entered in the status register.

Function

BE01 to 12 to status register OFF Fb25 to Fb36 = ON

WE Configuration

STEIG: Message when the binary input ma kes contact FALL: Message when the binary input breaks contact

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Malfunctions

Note:

When Fb14 = ON (Fan operation feedback to BE2) and Fb26 = ON (BE in FSR), should a fault occur, then “Fan malfunction” is registered in the FSR and not just the switching state of BE2.

You can read the status register by keeping the enter key pressed down in the operating level when the baud rate appears in the display. The display can be interpreted as shown below:

Number = Bit number in HR 0 123456789101112131415 This symbol appears on

the right next to the number when the bit is set

Bit value 2 Sensor failure D0 Default values read D1 Mode switch defective D2 Unauthorized access D3 BE1 D4 BE2 D5 BE3 D6 BE4 D7 BE5 D8 BE6 D9 BE7 D10 BE8 D11 BE9 D12 BE10 D13 BE11 D14 BE12 D15

0212223242526272829210211212213214215

The binary inputs are registered in the status register when the function block associated with it is activated in the configuration level.

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9 Communication

Communication

The TROVIS 5477 Ventilation Controller can communicate with a building management sys tem (GLT) over the serial system bus interface. A complete control system can be set up using an appropriate software for visualization and communication.

The following communication versions are possible:

Operation with a modem for a dial-up line to the system bus interface RS-232

Communication is automatically established only when faults in the plant occur. The control ler works autonomously, yet it can be dialed over the modem for data retrieval at any time, and influenced, if necessary. The use of a modem connecting cable (1400-7139) is recom

mended.

Operation with a modem for a dedicated line to the system bus interface RS-232

Communication is established constantly over a dedicated line using two dedicated line mo dems. This version is used to bridge long distances or for the use of other signal level con

verters. The controller and modem can also be connected using a modem connecting cable (1400-7139).

Operation with a four-wire bus to the system bus interface RS-485

The signal level must be converted by a converter (SAMSON TROVIS 5484) for the connection between PC and bus line.

Fig. 26 · Network structure

The TROVIS 5477 Ventilation Controller is equipped with either a RS-232-C or a RS-485 in terface depending on the order. It is not possible to change the interface later.

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Communication

RS 485

GNDTD DTR

DCD RD

RTS

RB RA

RS 232

Fig. 27 · Pin assignment RS-232-C and RS-485

9.1 RS-232-C serial interface

The system bus connection is located on the back of the controller casing (RJ12 jack). A controller can either be directly connected to a serial PC interface (point-to-point connection) or to dial-up modem. In the case, the controller is connected to the telecommunications network, a dial-up modem is required. The controller works autonomously and can trigger a call to the building control station in case of a fault. When the modem function is active, a call to the control station is triggered as soon as the status of the status register (FSR) changes. After communication has been established with the control station and it has read the FSR, the function in the controller to trigger a call is reset. In the case when the control station does not respond to the station address, connection is cancelled by the controller after the time

Modem-timeout to

the control station is disrupted, the alternative number is dialed after the controller has at tempted to redial the control station unsuccessfully by number of times set under In special cases, the Blocking modem dialing function can be selected to prevent a call being made when a fault occurs. The building control station can also be informed when a previ ously reported fault no longer exists with the Dialing also when fault no longer exists func tion.

Functions

Modem operation OFF

WE Configuration

Fb44 = ON 8 bit/16 bit addressing

Cyclic initialization

30 min 5 min

Modem dialing interval

5 min

Modem timeout

PULS

Dialing procedure / PULS, ton

–

Phone number

has elapsed. If the connection to

* / 0 to 255 min

* / 0 to 99 min

GLT

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Communication

Functions

Fault dialing OFF Fb45 Alternative phone number OFF

Blocking modem dialing OFF Fb47 Parameters*

Station address 255 0 to 247 (8 bit), 0 to 999 (16 bit) Baud rate

* -> Section 9.3 (Description of the communication parameters to be set)

BAUD

WE Configuration

Fb46 = ON

5 –

WE Range of values

9600 150, 300, …, 4800, 9600

Number of dial attempts GLT Alternative phone number*

*/ 0 to 99

9.2 RS-485 interface

The operation using a RS-485 serial interface requires a continuous bus connection (data cable) with four-wire connection. The bus line connects all the control devices through an open ring. The four-wire bus is connected to the control station at the end of bus line using a RS-485/RS-232 converter (e.g. TROVIS 5484). The maximum cable length is 1,200 m. In this segment, up to 32 devices may be connected. If you wish to use more devices or bridge greater distances, make sure repeaters (e.g. TROVIS 5482) are installed to replicate the signal. On the whole, max. 246 participants can be connected in line.

Caution!

For the installation, observe the standards and regulations for lightning and overvoltage pro tection.

Function

Modem operation OFF Fb44 = OFF

Parameters* Station address 255 0 to 247 (8 bit), 0 to 999 (16 bit) Baud rate

* -> Section 9.3 (Description of the communication parameters to be set)

BAUD

WE Configuration

8 bit/16 bit addressing

WE Range of values

9600 150, 300, …, 4800, 9600

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Communication

9.3 Description of the communication parameters to be set

Station number

The stations number is the controller’s address. It can only be allocated once in a system (net work).

BAUD

Baud rate (

Transmission rate. Within a bus system, the transmission rate is the same as the transfer rate between the con

trol station and the controller. The baud rate within the system must always be the same.

Pulse or multifrequency dialing PULS/ton (Fb44)

Determines the dialing procedure: Pulse dialing (Puls) or multifrequency dialing (ton).

Telephone number of the control station

The telephone number may have 23 characters at the maximum. “-” indicates the end of the string. Enter short pauses (e.g. between dialing code and the telephone number) using “P”. Example: Telephone number 069-654321 --> Enter 0 6 9 P 6 5 4 3 2 1 -

Telephone number of the alternative recipient (

Enter the number in the same manner as the control station number.

Modem dialing interval (

The time interval that must be kept between two calls.

Number of dialing attempts (

The number of attempts to dial the control station when the control station line is busy without resetting the function to trigger a call by the control system. After the specified number of redialing attempts have failed, the controller uses the alternative phone number. The function to trigger a call is reset by the control system by retrieving the status register (FSR).

Cyclic initialization (

This parameter defines the period of time for a cyclical issue of the initialization command "ATZ". The command is not issued during dial-up or when connected. The ATZ initialization causes the profile 0 to be copied to the active profile in the modem provided the modem pa rameters have been set and saved in profile 0 using a terminal program that came with the modem.

)

NR ALT

)

Note!

When using a dial-up modem, no data can be written to the controller at first after the con nection has been established! To unlock, the key number needs to be sent to holding register

158.

82 EB 5477 EN

Page 83

Communication

9.4 Memory module

The use of a memory module (order no. 1400-7142) is particularly useful for transferring all the configuration data from one TROVIS 5477 Controller to other controllers.

The memory module has a sub-D 25-pin female connector on the front panel. After inserting

77 SP

the RJ12 jack of the memory module into the controller, memory module already contains data from another controller, play when the arrow keys are pressed.

Press the enter key when

the memory module. Press the enter key when

controller from the memory module.

The bars run across the top section of the display to indicate that data transmission from the memory module to the controller is in progress. When the bars stop running across the display, carefully remove the RJ12 jack.

77 SP

appears on the display to upload controller settings onto

SP 77

appears on the display to download data on to the

appears on the display. If the

SP 77

appears on the dis

EB 5477 EN 83

Page 84

Installation

10 Installation

The controller consists of the controller housing with the electronics and the rear panel of the controller with the terminals. It is suitable for panel, wall and top hat rail mounting (Fig. 29).

Panel mounting

1. Remove both screws (1).

2. Pull apart the controller housing and the rear panel.

3. Make a cut-out of 138

4. Insert the controller housing through the panel cut-out.

5. Insert a mounting clamp (2) each at the top and the bottom. Screw the threaded rod towards the panel, so that the housing is clamped against the control panel.

6. Install the electrical connections at the rear of the housing as described in chapter .

7. Fit the controller housing.

8. Fasten both screws (1).

Wall mounting

1. Remove both screws (1).

2. Pull apart the controller housing and the rear panel.

3. If necessary, bore holes with the specified dimensions in the appropriate places. Fasten the rear of the housing with four screws.

4. Install the electrical connections at the back of the housing as described in chapter 11.

5. Fit the controller housing.

6. Fasten both screws (1).

x 92

+0.8

mm (w x h) in the control panel.

Top hat rail mounting

1. Fit the spring-loaded hook (4) at the bottom of the top hat rail (3).

2. Slightly push the boiler controller upwards and pull the upper hooks (5) over the top hat

rail.

84 EB 5477 EN

Page 85

Wall mounting

Installation

Panel mounting

Rear panel

Controller casing

Dimensions in mm:

W x H x D: 144 x 96 x 102

Fig. 28 · Mounting the controller

Top-hat rail mounting

EB 5477 EN 85

Page 86

Electrical connection

11 Electrical connection

Caution!

For the wiring and connection of the controller, you are required to observe the regulations of the Association of German Electrical Engineers (VDE) and your local power supplier. For this reason, this type of work must be carried out by a specialist.

Caution!

The controller inputs are not DC-isolated from the control outputs. If actuators and active sen sors are used which are supplied from the same operating voltage source, either all the ac tuators or all the sensors must be DC-isolated. If these instructions are not followed, the

controller may be destroyed.

Notes concerning the electric wiring

Use separate cables for the 230 V supply lines and the signal lines! To improve the noise

immunity, keep a minimum distance of 10 cm between these cables. This distance also applies to the cables inside the control cabinet. Use separate cables for the digital signals (bus lines) and the analog signals (sensor ca-

bles, analog outputs). We recommend that shielded cables be used for analog signal lines in systems with a

high level of electromagnetic noise. Ground the shield at the control cabinet inlet or outlet, using a large surface contact. Connect the central grounding point using a cable with ≥ 10 mm Equip the inductances in the control cabinet, e.g. contactor coils, with suitable interferen

ce suppressors (RC elements). Control cabinet elements with high field strengths, e.g. transformers or frequency conver

ters, should be shielded by means of separators that have good chassis ground.

on the shortest route to the PE grounding conductor.

Surge protection measures

If signal lines are routed outside of buildings or over long distances, you are required to

provide appropriate surge protection measures. Theses are imperative when bus lines are used. The shield of signal lines that are routed outside buildings must have current carrying ca

pacity and must be grounded on both sides. The surge diverters must be installed at the control cabinet inlet.

86 EB 5477 EN

Page 87

Electrical connection

Connecting the controller

Connect the controller as shown in Fig. 30.

Note!

It is important to observe the system code number and the configuration.

1. Open the casing.

2. Make holes to feed through cables at the marked locations on the top, bottom or back of the rear casing. Insert the enclosed grommets.

Connecting sensors

Connect cables with a minimum cross-section of 2 x 0.5 mm

to the terminal strip of the cas

ing rear panel.

Connecting actuators and pumps

Guide cables suitable for damp locations with a minimum cross-section of 1.5 mm

to the

terminal strip of the controller according to the wiring plan.

EB 5477 EN 87

Page 88

Electrical connection

BE1 BE2 BE3 BE4 BE5 BE6 BE7 BE8 BE9 BE10 BE11 BE12

0...10V

27 25

23 21 19

15 13

7 5 3

30 28

24 22

14 12 10

8 6

F12 F11 F10 F9 F8 F7

F6 F5 F4 F3 F2

AE4 AE3 AE2 AE1 AA Y 3 Y 2 Y 1 Y , AA GND

BA7 BA6, BA7 COM BA6

AA Analog output AE Analog input BA Binary output BE Binary input F Sensor or potentiometer input GND Ground Y Control output

0...10V

0...10V GND

BA1 BA2

BA3 BA4

BA5

32 33

34 35 36

37 38

39 40 41

43 44 45

Fig. 29 · Electrical connections

88 EB 5477 EN

Page 89

12 Appendix

12.1 Function block list CO

Appendix

Function

1 Sensor F1,

Supply air temperature

2 Sensor F2,

Exhaust air temperature

3 Sensor F3,

Outdoor temperature

4 Sensor F4,

Return air temperature heating coil

5 Sensor F5,

Room temperature

6 Sensor F6,

Return temperature HR

Sensor F6, Supply air humidity

7 Sensor F7,

mixed air or extract air temperature

WE Anl

Comment Function block parameter/Range of values (default)

0 to 9 Fb1 = ON: Sensor active; always active with supply

air/exhaust air cascade control and room cascade control;

Fb1 = OFF: Sensor inactive; always inactive if Fb18 = ON with AE1F1

0 to 9 Fb2 = ON: Sensor active; always active with

exhaust air control/exhaust air cascade control Fb2 = OFF: Sensor inactive; always inactive if

Fb18 = ON with AE3F2

0 to 9 Fb3 = ON: Sensor active

Fb3 = OFF: Sensor inactive; always inactive if Fb18 = ON with AE_F3

0 to 6,

Fb4 = ON: Sensor active

8, 9

Fb4 = OFF: Sensor inactive

0 to 9 Fb5 = ON: Sensor active; always active with room

control/cascade control Fb5 = OFF: Sensor inactive; always inactive if Fb18 = ON with AE3F5

3, 5 Fb6 = ON: Sensor active

Fb6 = OFF: Sensor inactive

6, 8, 9 Fb6 = ON: Sensor active; always active with supply

air, exhaust air cascade control and room cascade control Fb6 = OFF: Sensor inactive; always inactive if Fb18 = ON with AE2F6

2, 4 Fb7 = ON: Select:

Mixed air sensor: SEQ:

Operation in sequence with extract air

temperature Fb7 = OFF: Select:

SEQ:

Operation in sequence

AT:

Outdoor temperature-compensated mixed air

chamber operation

Mixed air temperature control

EB 5477 EN 89

Page 90

Appendix

Function

7 Sensor F7,

exhaust air or room humidity

8 F8, Potentiometer

Temperature set point

9 F9, Potentiometer

Outdoor air rate

F9, Potentiometer Humidity set point

10 Night purge OFF 0 to 9 Fb10 = ON: Only with outdoor and room

WE Anl

OFF 0 to 9 Fb8 = ON: Set point adjustable by ±5 °C

OFF 2, 4 Fb9 = ON: Proportion of outdoor air adjustable

OFF 6, 8, 9 Fb9 = ON: Set point adjustable by ±20 % rH

Comment Function block parameter/Range of values (default)

0 to 9 Fb7 = ON: Sensor active; always active with

exhaust air, exhaust air cascade, room or room cascade control

Fb7 = OFF: Sensor inactive; always inactive if Fb18 = ON with AE4F7

(with 1000 to 2000Ω)

between

Minimum outdoor air rate

(with 1000 to 2000Ω)

temperature;

Function block parameters:

(PA) and 100 %

START (Night purge enabled)/STOP up to 50 °C; (24 °C) STOP (Night purge ends)/10 to START (18 °C) Temperature difference to outdoor temperature:

0 to 50 °C (5 °C)

11 2-speed fans over

BA2/BA3

12 Cold storage OFF Fb12 = OFF:

OFF 0 to 9 Fb11 = ON:

Select: BA2 = BA3 = ON; BA2 = AUS, BA3 = ON Function block parameters:

Delay time

Function block parameters:

START

(Cold storage enabled at outdoor

temperature)/0 to 30 °C (18 °C)

/0 to 60 sec (0 sec)

90 EB 5477 EN

Page 91

Appendix

Function

12 BA4 dependent on Y3 or

controlling the chiller

13 External request for

operation with BE1 and BE4

Fan operation feedback to BE2

15 System frost protection with

BE3

16 Automatic switchover

between summer and winter

17 Selecting sensor type OFF 0 to 9 Fb17 = ON:Pt100 and Pt1000 sensors, mixed

WE Anl

OFF 1,

OFF 0 to 9 Fb13 = ON and operating mode switch at

OFF 0 to 9 Fb14 = ON:Function block parameters:

OFF 0 to 9 Fb 15 = ON: Standard operation or frost protection

ON 0 to 9 Fb16 = OFF: Automatic switchover between summer

Comment Function block parameter/Range of values (default)

Fb12 = ON:

Select:

SEQ

4 to 9

PAr

Function block parameters with SEQ:

for 7

START

only

STOP

SEQ

Function block parameters with PA:

START MIN

3600 sec; (600 sec)

STOP MIN

3600 sec (600 sec)

STOP

(50 %)

BE1 = ON, BE4 = OFF: System ON; with start-up mode, if needed BE1 = BE4 = OFF: Operation acc. to times-of-use BE4 = ON: System out of operation

Fb13 = ON and ooperating mode switch at : BE1 = ON: Operation according to times-of-use BE1 = OFF: System out of operation

START

dependent on BE3: BE3 = OFF: Frost protection mode BE3 = ON: Standard operation

time and winter time

possible Fb17 = OFF: Pt100 and PTC sensors, mixed possible

(operation in sequence) /

(operation in parallel)

(Activation value)/

(Deactivation value)/0 % up to

(Minimum activation time)/0, 60 to

(Minimim deactivation time) /0, 60 to

(Deactivate cooling when Y1 >)/0 to 100 %

(Delay time)/0 to 180 sec (180 sec)

STOP

up to 100 % (30 %)

START

(10 %)

EB 5477 EN 91

Page 92

Appendix

Function

18 Assigning the inputs AE1 to

AE4; 0 to 10 V

Note: Temperature measured variables can only be imposed on the analog inputs as an alternative if they are labeled in the system diagrams. Locking prevents an input being assigned twice.

19 External demand for fan

speed 2

20 Request for externally

required signal

21 Operating action of Y1 OFF 0 to 6,

22 Operating action of Y2 OFF 2 to 9 Fb22 = ON: 0 to 100 % =10 to 0 V

23 Operating action of Y3 OFF 1,

WE Anl

OFF 0 to 9 Fb18 = ON:Determine measured variable and

OFF 0 to 9 Fb19 = ON: Only with Fb11 = ON;

OFF 0 to 9 Fb20 = ON:Externally required signal;

Comment Function block parameter/Range of values (default)

measuring range for AE1 to AE4 ; Select measured variable:

– –

(not assigned),

AE1F1

(supply air temperature F1),

AE3F2

(exhaust air temperature F2,

AE2F3

(outdoor temperature F3),

AE3F5

(room temperature F5),

AE2F6

(supply air humidity F6),

AE4F7

(exhaust air or room humidity F7),

AE4L

(air quality L)

Function block parameters: MIN to MAX Temperatures for F1, F2, F3, F5:

MIN:

–40 to 0 °C (–40 °C)

MAX

Humidity for F6, F7

Air quality (0 to 10 V = 0 to 100 L):

Select:

from BE1

Function block parameters:

MIN AA

MAX AA (Flow requirement)/0 to 120 °C (90 °C)

MIN MAX

Fb20 = OFF: Outdoor temperature, when available, to AA: –40 to 50 °C = 0 to 10 V

Fb21 = ON: 0 to 100 % = 10 to 0 V

8, 9

Fb21 = OFF: 0 to 100 % = 0 to 10 V

Fb22 = OFF: 0 to 100 % = 0 to 10 V Fb23 = ON: 0 to 100 % = 10 to 0 V

4 to 9

Fb23 = OFF: 0 to 100 % = 0 to 10 V

: 0 to 70 °C (50 °C)

MIN:

–10 to 10 % rH (0 % rH)

MAX:

90 to 110 % rH (100 % rH)

MIN:

–10 to 10 L (0 L)

MAX:

90 to 110 L (100 L)

BE4, BE7,

(Change when Y1)/0 to 100 °C (10 °C)

(Change when Y1)/0 to 100 °C (90 °C)

dependent on or independent

(Flow requirement)/0 to 120 °C (90 °C)

92 EB 5477 EN

Page 93

Appendix

Function

WE Anl

Comment Function block parameter/Range of values (default)

24 Operating action of L OFF 0 to 9 Fb24 = ON: 0 to 100 L = 10 to 0 V

Fb24 = OFF: 0 to 100 L = 0 to 10 V

25 BE01 in FSR OFF 0 to 9 Fb25 = ON: Select:

StEIG

(entry in FSR for rising signal edge; make

contact)

FALL

(entry in FSR for negative signal edge; break

contact)

Note: Can only be changed with code number.

26 BE02 in FSR –> Fb 25 27 BE03 in FSR –> Fb 25 28 BE04 in FSR –> Fb 25 29 BE05 in FSR –> Fb 25 30 BE06 in FSR –> Fb 25 31 BE07 in FSR –> Fb 25 32 BE08 in FSR –> Fb 25 33 BE09 in FSR –> Fb 25 34 BE10 in FSR –> Fb 25 35 BE11 in FSR –> Fb 25 36 BE12 in FSR –> Fb25 37 Locking settings OFF 0 to 9 Fb37 = ON: CO level locked; PA level locked

except for time, date, set points, times-of-use, public holidays and vacations

Note: Can only be changed with code number.

38 BA5 dependent on Y1 OFF 0 to 9 Fb38 = ON: BA5 ON/OFF dependent on Y1;

Function block parameters:

START

(Activation value)/STOP up to 100 % (30 %)

STOP

(Deactivation value)/0 up to START (10 %)

Lag time of the fans/0 to 60 sec (10 sec)

39 Variable air volume via

analog output AA

OFF 0 to 7 Fb39 = ON: Only with Fb20 = OFF; control of AA

dependent on analog input for air quality

Function block parameters:

MIN AA K

* Only with cascade control

(Minimum air volume)/0 to 100 % (25 %),

(Factor of change)/0.0 to 10.0 (0.0)

EB 5477 EN 93

Page 94

Appendix

Function

40 Condensation detection OFF 1, 4,

WE Anl

Comment Function block parameter/Range of values (default)

Fb40 = ON: Select: BE4, BE7

5, 6*,

StEIG

7, 8*,

(entry in FSR for rising signal edge; make contact) FALL (entry in FSR for negative signal edge; break contact)

Note: Can only be changed with code number.

41 Automatic reversal of the

operating action

42 Fan operation dependent on

room temperature/room humidity

OFF 3, 5, 9 Fb41 = ON: Only with Fb2 = ON and Fb3 = ON

OFF 0 to 9 Fb42 = ON: Only with Fb11 = ON, with room

or AE3F2 and AE2F3

control or room cascade control and/or with Fb7 (AE4F7); Select Reaction:

MIN

(When value falls below limit)

MAX (When value exceeds limit)

Function block parameters:

Difference in room temperature set point:

1 to 10 °C (5 °C) or

Difference in room humidity set point:

1 to 10 % rH (5 % rH)

43 Circulating air mode after

system start-up

44 Modem operation OFF 0 to 9 Fb44 = ON:Activated, function block parameters:

OFF 2, 4, 8 Fb43 = ON: Activated, not with supply air control

8 bit/16 bit addressing

(Cyclic initialization)/0 to 255 min (30 min)

(Dialing interval when line is busy)/0 to 255

(5 min)

to (Time after missing Modbus query)/

(5 min)

PULS/ton

Control station phone number: (0 to 9, P = Pause, - = End; maximum 23 characters)

(Dialing procedure) (PULS)

0 to 99 min

Note: Can only be changed with the code number.

45 Dialing when faults occur OFF 0 to 9 Fb45 = ON: Dialing initiated for incoming and

outgoing faults Fb45 = OFF: Dialing initiated for incoming faults

Note: Can only be changed with the code number.

94 EB 5477 EN

Page 95

Appendix

Function

46 Alternative recipient OFF 0 to 9 Fb46 = ON: Alternative number;

WE Anl

Comment Function block parameter/Range of values (default)

Function block parameters:

(Number of dialing attempts to control station)/

0 to 99 ( 5)

Alternative recipient’s telephone number/0 to 9, P = Pause, - = End; maximum 23 characters) Note: Can only be changed with the code number.

47 Prevent modem dialing OFF 0 to 9 Fb47 = ON: Modem does not dial control station

because of FSR change

Note: Can only be changed with the code number.

EB 5477 EN 95

Page 96

Appendix

12.2 List of parameters

Parameters in

PA level

The parameters displayed below are just examples. The system shown does not appear in the controller.

Symbol Parameter description / Range of values (default setting)

0123456789101112131415161718192021222324

M M

Y3 Y2

0123456789101112131415161718192021222324

M M

Y3 Y2

0123456789101112131415161718192021222324

M M

Y3 Y2

M M

Y3 Y2

Y1 Y2 Y3

Time

Supply air temperature set point

C

(0 to 50 °C; WE = 22 °C)

Exhaust air temperature set point

C

(0 to 40 °C; WE = 22 °C)

Room temperature set point

C

(0 to 40 °C; WE = 22 °C)

96 EB 5477 EN

Page 97

Symbol Parameter description / Range of values (default setting)

0123456789101112131415161718192021222324

MIN

0123456789101112131415161718192021222324

MAX

M M

Y3 Y2

0123456789101112131415161718192021222324

KTT

0123456789101112131415161718192021222324

M M

Y3 Y2

M M

Y3 Y2

0123456789101112131415161718192021222324

M M

Y3 Y2

Y1 Y2 Y3

Supply air temperature minimum limit

C

(0 °C to [Supply air temperature maximum limit];

WE = 18 °C)

Supply air temperature maximum limit

C

([Supply air temperature minimum limit] to 50 °C;

WE = 26 °C)

Heating coil (0.1 to 99.9; WE = 0,5)

Heating coil (1 to 999 sec; WE = 60 sec)

Heating coil (– – – to 999 sec; WE = – – –)

Temperature set point of the slave loop

C

(0 to 50 °C; WE = 22 °C)

Temperature master loop

Appendix

M M

Y3 Y2

Y1 Y2 Y3

(0.1 to 99.9 sec; WE = 1.0)

EB 5477 EN 97

Page 98

Appendix

Symbol Parameter description / Range of values (default setting)

KPTemperature master loop

(0.1 to 99.9; WE = 1.0)

Return air temperature minimum limit

(0 °C to [Return air temperature maximum limit];

WE = 20 °C)

Return air temperature maximum limit (coordinate 1, 2 recognizable from the square located to the right of 1, 2)

([Return air temperature minimum limit] to 100 °C;

WE = 70 °C)

0123456789101112131415161718192021222324

M M

Y3 Y2

M M

Y3 Y2

98 EB 5477 EN

Outdoor temperature, coordinate 1

C

(–50 to 20 °C; WE = 5 °C)

Y1 Y2 Y3

Outdoor temperature, coordinate 2

C

(–50 to 20 °C; WE = 20 °C)

Y1 Y2 Y3

Page 99

Symbol Parameter description / Range of values (default setting)

0123456789101112131415161718192021222324

Return air temperature limit factor

Appendix

0123456789101112131415161718192021222324

START

M M

Y3 Y2

0123456789101112131415161718192021222324

START

M M

Y3 Y2

0123456789101112131415161718192021222324

START

M M

Y3 Y2

0123456789101112131415161718192021222324

STOP MAX

M M

Y3 Y2

M M

Y3 Y2

Y1 Y2 Y3

(0 to 10; WE = 1)

Sustained room temperature

C

(0 to 20 °C; WE = 15 °C)

Start-up mode when the outdoor temperature is smaller

C

(0 to 10 °C; WE = 5 °C)

Pump advance running time for start-up

sec

(0, 60, 120 to 900 sec; WE = 300 sec)

Control signal limit for Y1

(0 to 100 %; WE = 100 %)

EB 5477 EN 99

Page 100

Appendix

Symbol Parameter description / Range of values (default setting)

0123456789101112131415161718192021222324

START

0123456789101112131415161718192021222324

M M

Y3 Y2

0123456789101112131415161718192021222324

M M

Y3 Y2

Y1 Y2 Y3

Pump ON when the outdoor temperature is smaller

C

(–50 to 10 °C; WE = 0 °C)

Summer compensation when outdoor temperature is grea

C

ter (–50 to 40 °C; WE = 26 °C)

Set point at an outdoor temperature of 32 °C;

C

Supply air temperature

32C

0123456789101112131415161718192021222324

M M

Y3 Y2

32C

0123456789101112131415161718192021222324

M M

Y3 Y2

32C

M M

Y3 Y2

100 EB 5477 EN

Y1 Y2 Y3

(0 to 40 °C; WE = 26 °C)

Set point at an outdoor temperature of 32 °C;

C

Exhaust air temperature

(0 to 40 °C; WE = 26 °C)

Set point at an outdoor temperature of 32 °C;

C

Room temperature

(0 to 40 °C; WE = 26 °C)

Samson TROVIS 5400, TROVIS 5477 Mounting And Operating Instructions

Specifications and Main Features

Frequently Asked Questions

User Manual