Commissioning • General instructions for performing temperature testing
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Automation PC 3100 user's manual V0.60
Information:
USB flash drives can also be used if no USB loopback adapters are available. The USB flash drives
must be available in Windows as formatted drives. The test USB must then be deselected, and the USB
flash drives must be configured as the testing device in the disk properties.
Information:
Serial loopback adapters are relatively easy to create. Simply connect some pins on the serial interface
with wires.
5.3 Evaluating temperatures in non-Windows operating systems
For applications that do not run in Windows, temperatures can be evaluated using the B&R implementation guide.
In addition to the implementation guide, programs in MS-DOS are also available.
The implementation guide only describes device-specific functions, not the main functions of the sample programs.
If code from the sample programs is used, it is important to take into account the notes in the implementation guide
regarding TODO comments, I/O access functions, etc.
Information:
Sample programs and implementation guides for every B&R industrial PCs or Power Panels can be
downloaded at no cost from the B&R website (
).
5.4 Evaluating the measurement results
The maximum temperature value recorded by each sensor is not permitted to exceed the temperature limits spec-
ified in the user's manuals.
If the temperature tests cannot be performed in a climate chamber, they can be performed in an office environment,
for example. It is necessary to measure the ambient temperature in this case, however. Experience at B&R has
shown that temperature values measured on passive systems (systems without a fan kit) can be calculated linearly
based on the ambient temperature. In order to calculate temperature values for systems with a fan kit, the fans
must be running. It is also important to take speed, etc. into account.
If the temperature tests are performed in a climate-controlled chamber with fans, the fans will cool the devices
being tested and distort the results. The measurement results for passive devices are therefore unusable. In order
to be able to still perform temperature tests in climate-controlled chambers with fans without distorting the results,
the fans in the climate chamber must be switched off and a sufficient amount of time (several hours) observed
before beginning the test.
