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Siemens
Central control unit RMB795B
CE1P3122en
Building Technologies
Inputs
18.01.2012
If the unit is °C, the type is selectable. The following types are available:
•
Ni1000
•
2xNi1000
•
T1
•
Pt1000
•
0..0.10 V
If the unit is not °C, the type is always 0...10 V.
Main menu > Commissioning > Settings > …
or
Main menu > Settings > Inputs > ...X...
Operating line
Range
Factory setting
Type Ni1000,
2xNi1000,
T1,
Pt1000, DC 0…10 V
Ni1000
7.2.2
Measuring range
The following measuring ranges are defined for passive temperature signals:
Temperature signal
Measuring range
LG-Ni 1000
–50…+250 °C
(fixed)
2 x LG-Ni1000 or T1
–50…+150 °C
(fixed)
Pt1000 –50…+400
°C
(fixed)
In the case of active signals, the measuring range is definable. A lower and an
upper measured value must be entered.
Active 0…10 V temperature signals have a default measuring range of 0…200 °C,
but they are adjustable within the overall range of –50…+500 °C.
Room temperature with an active signal of DC 0...10 V = 0...50 °C:
Lower measured value:0 °C
Upper measured value:50 °C
Main menu > Commissioning > Settings > …
or
Main menu > Settings > Inputs > ...X...
Operating line
Range
Factory setting
Value low
Depending on selected type.
Depending on type.
Value high
Depending on selected type.
Depending on type.
7.2.3
Measured value correction
With passive temperature sensors, the measured value can be readjusted by –3,0
to +3,0 K to compensate for line resistance.
This can be used to perform on site calibration with a reference measuring unit.
Type
Setting values
Passive temperature
signals
Active signals
Examples
Setting values
Purpose
