Internal calculation channels
PMX
A4354-2.2
HBM: public
213
13.2.4.3 RTD PT100 at PX455
Function
Temperature measurement with a RTD Pt100 resistor
connected at PX455.
Range -100°C ... +500°C.
A fixed 100 Ohms precision resistor must complement the
RTD to form a half bridge. The complement resistor is
connected at the positive bridge supply.
The complement resistor can be connected directly at the
PX455 front clamps without wiring.
The details are outlined in a PMX Tech Note.
Inputs
The half bridge signal in mV/V
Outputs
Temperature in °C
Parameters
R_wire [Ohms]: The resistance of the wire to the RTD
(single distance). This parameter must be set, when the
complement resistor is connected without wires directly at
the PX455 clamps.
If the complement resistor is connected with the same wire
length as the RTD 100, then the wire resistances are
compensated by the bridge layout and R_wire must be
zero.
Default
R_wire = 0 Ohms
Exception handling
If the input is marked as invalid (Invalid bit), the operation
stops and the output gets frozen and is marked as invalid.
When the temperature is out of range (-100 .. +500°C),
then -333.3°C is output and the output is marked as
invalid.
Summary of Contents for PX401
Page 1: ...Operating Manual English PMX...
Page 104: ...Electrical connections PMX 104 A4354 2 2 HBM public PMX...
Page 141: ...Startup PMX A4354 2 2 HBM public 141 Network settings...
Page 239: ...Internal calculation channels PMX A4354 2 2 HBM public 239...
Page 241: ...Internal calculation channels PMX A4354 2 2 HBM public 241...
Page 246: ...Internal calculation channels 246 A4354 2 2 HBM public PMX...
Page 264: ...Internal calculation channels 264 A4354 2 2 HBM public PMX...
Page 272: ...Parameter sets measurement programs 272 A4354 2 2 HBM public PMX...
Page 295: ...Communication with a control system PMX A4354 2 2 HBM public 295...
Page 297: ...Communication with a control system PMX A4354 2 2 HBM public 297...
Page 300: ...Communication with a control system 300 A4354 2 2 HBM public PMX...
Page 376: ...CODESYS V3 Soft PLC WGX001 only 376 A4354 2 2 HBM public PMX...
Page 378: ...CODESYS V3 Soft PLC WGX001 only 378 A4354 2 2 HBM public PMX...
Page 381: ...CODESYS V3 Soft PLC WGX001 only PMX A4354 2 2 HBM public 381...
Page 392: ...CODESYS V3 Soft PLC WGX001 only 392 A4354 2 2 HBM public PMX Dialog Updating the PMX device...
Page 489: ...Object directory PMX A4354 2 2 HBM public 489...
Page 523: ...Diagnosis and maintenance PMX A4354 2 2 HBM public 523 Network settings...