Electrical connections PMX
70
A4354-2.2
HBM: public
PMX
8.4
Measurement cards / transducer
connection
8.4.1
Intrinsically safe measurement circuits -
Operation with Zener barriers
To operate transducers (load cells, force transducers,
etc.) in potentially explosive atmospheres, intrinsically
safe measurement circuits (Ex II (1) GD, [EEx ia]IIC)
must be set up on the PX455 by connecting safety
barriers (Zener barriers) type SD01A. The safety barriers
must also be mounted on the DIN rail like the PMX. An
ATEX test certificate must be available for the
transducers used. Transducers with 350 ohm bridge
resistance can be used. One transducer per
measurement channel of the PC455 can be operated
(parallel connection is not possible).
The PX455 offers 4 measurement channels with 4.8kHz
carrier frequency measurement. If the measurement
signals need to be added/subtracted or mean values
formed, this can be set using the internal PMX calculation
channels.
Important
In addition to the SD01A, the negative operating voltage
of the PMX must be grounded!
Cable lengths of up to max. 100 m are permissible. TEDS
cannot be used.
The measurement accuracy of the PX455 with operation
of the SD01A is max. 0.5%.
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...