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Siemens
RDU340… Basic Documentation
CE1P3078en
Building Technologies
Functions
2014-11-03
4.11 Control parameters
A number of control parameters can be readjusted to optimize control performance.
These parameters can also be set during operation without opening the unit. In the
event of a power failure, all control parameter settings are retained.
The control parameters are divided in two levels:
·
“Service” level, and
·
“Expert”
level.
The “Service” level contains a small set of parameters to set up the controller for
the HVAC system and to adjust the user interface. These parameters can usually
be adjusted any time.
Change parameters in the “Expert” level only carefully, as they impact control
performance and functionality of the controller.
Change the parameters as follows:
1. Set the controller to Standby
*)
2. Press b and - simultaneously for 3 seconds. Release and press
again for 3 seconds within 2 seconds. The display shows “P01”.
Continue at Step 3.
1. Set the controller to Standby
*)
2. Press b and - simultaneously for 3 seconds. Release and press
button - again for 6 seconds within 2 seconds. The display shows “P01”
and service.
3. Select the required parameter by repeatedly pressing b and -.
4. When you press b and - simultaneously, the current value of the
selected parameter starts to flash, which can be changed by repeatedly
pressing b or -.
5. When you again press b and – simultaneously, the next parameter
is displayed.
6. Repeat Steps 3 to 5 to display and change additional parameters.
7. All changes are saved and the controller returns to Standby 10 seconds
after the last display or setting.
The factory setting for the control parameters can be reloaded via parameter P71,
by changing the value to “ON”, and confirming by pressing buttons
+
and
–
simultaneously. The display shows “8888” during reload.
*) If one of the digital inputs is commissioned as window contact, and the contact is
closed, the controller will switch to ECO mode and parameter setting will not be
possible. Solution: open the window contact.
Parameter setting
Enter only “Service”
level
Enter “Service” and
“Expert” level.
Adjust parameters
Reset parameters
Note
