Siemens RVD110 - Display of Active Limitations; PPS Identification; Contact State H5; Resetting the Heating Engineer Level

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Siemens Building Technologies Basic Documentation RVD110, RVD130 CE1P2381E
HVAC Products 18 Function block Test and display 27.05.2004
18.2.3 Display of active limitations
The active limitation with the highest priority is displayed on operating line 143:
Display Limitation Priority
1 Maximum limitation of primary the return temperature 1
2 Maximum limitation of common the flow temperature 2
3 Maximum limitation of the heating circuit’s secondary flow tem-
perature
3
4 Maximum limitation of the temperature differential 4
5 Maximum limitation of the room temperature 5
11 Minimum limitation of the reduced room temperature setpoint 6
12 Minimum limitation of the common flow temperature 7
13 Minimum limitation of the heating circuit’s secondary flow tem-
perature
8
The limitations relate to the request signals (setpoints)
18.2.4 PPS identification
At the PPS (input A6), the address of the digital device is acquired and displayed on
operating line 145:
Address displayed Unit
1 82 Room unit QAW50
1 83 Room unit QAW70
1 90 Room temperature sensor QAA10
--- --- No unit connected
18.2.5 Contact state H5
On operating line 146, the state of input H5 can be interrogated:
Code displayed Current status
0 Contact open
1 Contact closed
With the RVD110, input H5 is not used, which means that the display is inactive.
18.2.6 Resetting the heating engineer level
By selecting operating line 149, all operating lines of the ”Heating engineer” level will be
reset to their default values. This applies to:
• Operating lines 61 through 66
• Operating lines 70 through 123
Proceed as follows:
1. Select operating line 149.
2. Keep buttons
and depressed until the display changes. A flashing 0 on the
display is the normal state.
3. If 1 appears, the controller has retrieved the factory settings.
The configuration of the plant (operating lines 51 through 55) and the adaptation sensi-
tivities (operating lines 67 through 69) will not be changed by resetting the parameters.
18.2.7 Software version
The software version can be displayed on operating line 150. This is important for cus-
tomer service when making diagnostics.