Siemens Pointek CLS200 Operating Instructions Manual page 102

Profibus PA profile structure
C.3 Description of the blocks
Transducer Block function groups
How it works
The frequency value (represented in 'counts'
limits. If the limit is exceeded, this results in a Bad status and the error message Failure in
measurement. The frequency value is stored in Sensor Value.
The analog signal from the sensor is transformed into a discrete signal which controls the
behavior of the switch point. The switch point is provided with a hysteresis.
A delay function provides the discrete signal with individual delay times for rising and falling
delay (Rise Time and Fall Time). The delay function acts as a filter that, for example,
compensates for a medium with an agitated surface. The result of this smoothed signal is the
Primary Value.
Electronics temperature
The Transducer Block also monitors the internal temperature of the device electronics. If the
temperature exceeds permitted limits, it does not change the sensor value, but it does
change the status. Permitted limits correspond to those of the permitted ambient
temperature for the electronics components. Temperatures in excess of these limits may
damage the components or cause them to become unstable.
If a temperature limit is exceeded, the status changes to GOOD – Active Critical Alarm –
Limit Overflow/Underflow. The status of the Sensor Value, the Sensor Value discrete, and
the Primary Value in the Transducer Block Discrete input, receive the status UNCERTAIN –
Value inaccurate. This action is accompanied by a PROFIBUS diagnostic message Electronics
temperature too high.
Drag indicators
occurred.
See Counts in Counts (Page 88) for more detail.
1)
See Drag indicators (Peak indicators) in Filling level status (Page 72) for more detail.
2)
102
allow you to check the maximum and minimum temperatures that have
2)
) is checked to see if it is within its measuring
1)
Operating Instructions, 05/2021, A5E47904060-AA
Pointek CLS200/CLS300 digital