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Multi-Input/Output Device
Parameterization and Operation
In OOS mode, the transducer block is deactivated and the valve output is not controlled. Thus,
a connected actuator drive moves in its mechanical safety position. Use this mode if you intend
to adjust basic function parameters, e. g., Act. Fail Action, Sensor Usage, and PV_D
Generation or if the corresponding channel is not used.
The "Auto" mode is provided for operation. The transducer block operates in this mode as
specified by parameterization.
"Man" is used by the setup wizard and must not be modified.
4.5.5
Time Monitoring
The MIO device can monitor the breakaway and transit times of a valve. You can activate the
time monitoring parameter to measure the breakaway and transit times of the connected valve.
You can compare the measured values to the reference values during each reference value
modification of the valve position.
If a measured time is longer or shorter than the reference time plus a specified tolerance, an
alarm is generated. The times measured last are also displayed.
Prerequisites
The following parameters must be set as a prerequisite for time monitoring:
Act. Fail Action. For more information, see chapter 4.5.2.
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Sensor Usage. For more information, see chapter 4.5.3.
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Activation of Time Monitoring
You can activate time monitoring by setting the option Time Monitoring in the Valve Monitoring
parameter.
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