Limitations - Siemens RVD240 Basic Documentation

Pulses
Radio clock receiver
Siemens Building Technologies
HVAC Products
If pulses are received at H5 (e.g. pulses for limiting the volumetric flow through heat
meters), the number of pulses received per minute will be displayed.
Only entire pulses can be displayed. The display shows pulses/min; the measurement
range is 0...2250 pulses/min.
The display shows H5 and the measured value.
If a radio clock receiver is connected to the data bus (LPB), the RVD240 can receive
the radio signals via data bus. On operating line 165, it is possible to see how much
time has elapsed (hh:mm) since the radio clock receiver received the last correct time
telegram.
The display shows r c l (Radio Clock) and hh:mm. If no valid value is available, the
display cannot be selected. The reason can be one of the following:
• No radio clock receiver connected
• Controller has no data bus address
• Connection interrupted
25.7

Limitations

Active limitations are displayed on operating line 169. Interrogation is made with the
setting buttons and
tion symbol.
Code Symbol Type of
limitation
1 Maximum
2 Maximum
3 Maximum
4 Maximum
5 Maximum
6 Maximum
7 Maximum
8 Maximum
9 Maximum
10 Maximum
11 Maximum
12 Maximum
13 Maximum
14 Maximum
15 Maximum
16 Maximum
17 Maximum
18 Maximum
19 Maximum
20 Minimum
21 Minimum
22 Minimum
23 Minimum
24 Minimum
25 Minimum
26 Minimum
27 Minimum
* For suppressing hydraulic creep
** According to the setting made on operating line 56 (action of pulse input on the heating circuits)
Basic documentation RVD240
25 Function block Test and display
. Each limitation is assigned a code and the respective limita-
Limited variable
Volumetric flow or output, common flow
Common primary return
Temperature differential (DRT), common flow
Common secondary flow
Volumetric flow or output, heating circuits**
Primary return heating circuit 1
Secondary return heating circuit 1
Temperature differential (DRT) heating circuit 1
Secondary flow heating circuit 1
Room temperature heating circuit 1
Flow temperature rise heating circuit 1
Primary return heating circuit 2
Secondary return heating circuit 2
Temperature differential (DRT) heating circuit 2
Secondary flow heating circuit 2
Room temperature heating circuit 2
Flow temperature rise heating circuit 2
Primary return d.h.w.
Secondary return d.h.w.
Common flow primary side*
Common secondary flow
Flow heating circuit 1*
Secondary flow heating circuit 1
Reduced room temperature setpoint heating circuit 1
Flow heating circuit 2*
Secondary flow heating circuit 2
Reduced room temperature setpoint heating circuit 2
89/126
CE1P2384en
27.05.2004