Siemens Building Technologies
Basic Documentation RVL470
CE1P2522E / 30.03.2000
Landis & Staefa Division
Function block "End-user 2"
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6. Function block "End-user 2"
This function block contains settings that the end-user himself may make, as well as
fault indication.
6.1. Operating lines
Line
Function, parameter
Unit
Factory
setting
Range
38
Time of day
hh:mm
00:00...23:59
39
Weekday
1...7
40
Date
dd:MM
1.01. ... 31.12.
41
Year
yyyy
1995...2094
50
Faults
0...255
6.2. Time of day and date
The RVL470 has a yearly clock to enter the time of day, weekday and date.
The changeover from summer- to wintertime, and vice versa, is automatic. Should the
respective regulations change, the changeover dates can be adjusted (refer to
section "13. Function block "Service functions and general settings"").
6.3. Indication of faults
The following faults are indicated:
Number
Fault
10
Interruption or short-circuit in the outside sensor's measuring circuit (B9)
30
Interruption or short-circuit in the flow or boiler temperature sensor's
measuring circuit (B1)
40
Interruption or short-circuit in the measuring circuit of the return tem-
perature sensor in the primary circuit (B7)
42
Interruption or short-circuit in the measuring circuit of the return tem-
perature sensor in the secondary circuit (B71)
60
Interruption or short-circuit in the room temperature sensor's measuring
circuit (B5)
61
Interruption or short-circuit in the measuring circuit of the room unit's sen-
sor (A6)
62
Wrong room unit connected
81
Short-circuit on the LPB
82
Same bus address exists on the data bus (LPB) several times
100
Two time masters on the LPB
120
Flow alarm (for explanation, refer to function block "Service functions",
operating line 171)
140
Inadmissible bus address or inadmissible plant type (if RVL470 is used
with LPB)
142
Wrong partner unit (with RVL469 only)
If a fault occurs, the LCD displays
ERROR
.
In interconnected plants, the address (device and segment number) of the controller
causing the fault is indicated on all the other controllers, but no address is displayed on
the controller causing the fault.