Bedienungsanleitung Siemens RDU (Seite 2 von 2) (Englisch)

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CE1B3061en / 05.02.2003 Subject to alteration Siemens Building Technologies / HVAC Products

Commissioning (by qualified HVAC staff)

Para-

meter

Controller’s parameter factory settings:

Setting range

(all settings can be made in increments of 0.5 K)

RDU20 RDU50 RDU50.2

P01

Setpoint of heating in energy saving mode

(operating mode changeover switch activated)

16 °C

0: corresponds to Off (display Off) 5…18 °C

P02

Setpoint of cooling in energy saving mode

(operating mode changeover switch activated)

28 °C 0: corresponds to Off (display Off) 24…35 °C

P03 Minimum setpoint limitation in normal mode

5 °C 5…20 °C

P04 Maximum setpoint limitation in normal mode

35 °C 21…35 °C

P05 Heat-cool changeover switching point cooling

16 °C 10…25 °C

P06 Heat-cool changeover switching point heating

28 °C 27…40 °C

P07 Sensor calibration 0 K -3…+3

P08 P-band in heating mode 2 K 0.5…+4 K

P09 P-band in cooling mode 1 K 0.5…+4 K

Integral action time X

P10

Integral action time (only with modulating PI control, DIP switch no. 2 is set to ON)

5 min. 1…10 min. (increments of 1 min.)

Minimum output limitation in cooling mode (normal operation) 0 % 0...100 % (increments of 10 %) X

P11

Actuator running time (only with modulating PI control, DIP switch no. 2 is set to ON)

150 s 50...150 s (increments of 10 s) XX

P12 Active temperature sensor (no setting, display only)

1: room temperature sensor active

2: return air temperature sensor active

P13 Value of current room temperature reading (no setting, display only)

0…49 °C = current temperature value

P14

Value of current heat-cool changeover temperature reading including indication of current

mode (

, ) (no setting, display only)

100 = input open (no sensor connected, heating mode ( ))

0…49 °C = current temp. value

00 = input bridged, cooling mode (

)

P15

Test mode for checking the actuator direction (note that this parameter can be quit only if the

setting is back at “---” and by pressing buttons + and – simultaneously)

---

“---“ = no signal on outputs Y1 and Y2

OPE = output Y1 forced open

CLO = output Y2 forced open

Changing the control parameters

(To optimize the control performance, a number of control parameters

can be adjusted. This can also be made during operation without

opening the controller.

Do you want to change the control parameters of the heating and / or

cooling setpoints in the normal or energy saving mode? Or do you

want to increase / decrease the switching differential in heating and

cooling mode?

Then, proceed as follows:

(For factory settings, see above under “Commissioning)

1. Normal operation mode

2. Press the + and – buttons simultaneously for a min. of 3

and a max. of 5 seconds. Release them and within 2

seconds, press the + button again for 3 seconds. The

display will show “P01”.

3. Select the required parameter by repeatedly pressing

the + or – button:

P01 P0 2 P14 P15

+-+-+

3055z01

4. Press the + and – buttons simultaneously, the current

value of the selected parameter appears, which can

be changed by repeatedly pressing the + or – button.

5. By pressing buttons + and - simultaneously again or

5 seconds after the last press of a button, the last

parameter will be displayed again.

6. If you wish to display and change additional

parameters, repeat steps 3 through 5.

7. 10 seconds after the last display or setting,

all changes will be stored.

If the room temperature displayed by the controller does not agree with

the temperature effectively measured, the temperature sensor can be

recalibrated. For that purpose, parameter P07 must be changed

Proceed as described under “Changing the control parame-

ters” and follow steps 1 through 3 to select parameter P07.

With step 4, the room temperature displayed can now be

matched to the temperature effectively measured. Each push

of the + or – button changes the temperature by + or –

0.5 °C up to a maximum of + / - 3 °C.

With step 7, the recalibration is automatically stored 10

seconds after the last readjustment.

Legend to table

Adjustable:please record all changes you make

Not adjustable / display only

Not adjustable / no display

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