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Siemens Building Technologies Basic Documentation LMV5... CC1P7550en
HVAC Products 6 Temperature or pressure controller (internal load controller LC) 13.08.2004
6.5 Actual values (X)
Measuring accuracy: Min. ± 1 % of the measuring range (excluding the sensor error).
Parameter: UnitTemperature (Display °C / Display °F)
Definition of sensors (incl. activation / deactivation of the TL function):
0 = input 1, Pt100, temperature (internal TL function = active)
1 = input 4, Pt1000, temperature, (internal TL function = active)
2 = input 4, LG-Ni 1000, temperature, (internal TL function = active)
3 = input 2, temperature, (internal TL function = not
active)
4 = input 2, pressure, (internal TL function = not
active)
5 = input 1 Pt100, for TC and TL function and
input4, Pt1000, in addition for TL function
6 = input 1 Pt100, for TC and TL function and
input4 LG-Ni 1000, in addition for TL function
7 = no sensor (e.g. in the case of external predefined loads and without
internal TL function)
Parameter: SensorSelection (Pt100 / Pt1000 / Ni1000 / TempSensor / Pres-
sureSensor / Pt100Pt1000 / Pt100Ni1000 / No Sensor)
3-wire circuit (copper wires), line balancing is not required when the resistances of the
measuring leads are identical.
The TL function is active.
Start of measuring range: 0 °C or 32 °F
End of measuring range: 150 °C or 302 °F or (can be parameterized)
400 °C or 752 °F
Parameter: MeasureRange PtNi
This input can be parameterized as a pressure or temperature input.
Parameter: Ext Inp X61 U/I:(4...20 mA/2...10 V/0...10 V)
The TL function is not active.
Active power supply by the LMV5...; typically, a pressure or temperature sensor /
transmitter is connected here (e.g. QBE620-P or QBE2000-P).
Power supply to the pressure sensor: DC 20 V / 25 mA (nominal rating).
Start of measuring range: 0 °C or 32 °F
Parameter: MeasureRange TempSensor
End of measuring range: Continuously up to 2,000 °C or 3,632 °F
Start of measuring range: 0 bar or 0 psi
Parameter: MeasureRange PressSensor
End of measuring range: Continuously up to 100 bar or 1,450 psi
Detection of sensor short-circuit and open-circuit is provided (distance from ends of the
measuring range about 10 % of the measuring range).
In the case of DC 0...10 V signals, detection of short-circuits and open-circuits is
not possible.
If a fault is detected, the burner will be shut down (changing to the safety phase). If the
short-circuit or open-circuit disappears within the safety phase, a change to standby will
take place. Otherwise, lockout will be triggered.
Input 1, TEMP,
Pt100 sensor (DIN)
X60
Input 2: TEMP. / PRESS
INPUT, DC 0...10 V / DC
2...10 V / 4...20 mA
X61
Measuring range
temperature
(can be parameterized)
Measuring range pressure
(can be parameterized)
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