HIMA HIMax X-MIO 6 01, Руководство пользователя

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X-MIO 7/6 01 4 Start-up
HI 801 305 E Rev. 5.00 Page 41 of 72
4.4 Overspeed Trip Module Sampling
The following chapters describe how the input signals are sampled. The overspeed detection
and following triggering of the trip function is independent of the overall HIMax system and the
user program.
X-MIO 7/6 01
1
7
2o
o3
DI 02...DI 04
DI 01
2
NO
NC
C
DO 01...DO 05
2o
o3
3
3
3
6
4
5
9
CI 01
CI 02
CI 03
8
Sensors (Pulse Generators)
Input Signal
Measuring Facility (SIL 3)
Input for External Trip Signals
Reset Input Safety-Related Processor System
Processor Module (X-CPU)
Control of Solenoid Valves
Warning Relay
Figure 13: Evaluation of Input Signals
The input signals from three independent sensors are sampled by one measuring device
each in accordance with SIL 3 and provided to the safety-related processor system. For
each channel, the values for the rotation speed and direction sampled by the measuring devices
are output to the parameters
-> Rotation Speed [mHz] [DINT]
and
-> Rotation Sense [USINT]
in
the SILworX Hardware Editor, see Table 33.
2oo3 evaluation of the values measured for the rotation speed and direction is performed in the
safety-related processor system. The mean of the rotation speed values is calculated and
output to the
Frequency Raw
parameter, see Table 27. The 2oo3 evaluation is used to
determine the rotation sense based on the rotation sense values. Its value is output to the
Rotation Sense
parameter. The processor module reads the parameters
Frequency Raw
and
Rotation Sense
cyclically and processes them in the user program.
In addition to rotation speed and sense, the acceleration values are sampled for each channel
from the input signals of the sensors and are output to the
-> Gradient Raw [DINT]
parameter,
see Table 33.