Meggitt vibro-meter SpeedSys300 ODS301, Руководство пользователя

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Document reference MAODS301/E USER MANUAL
Edition 4 - May 2022 SpeedSys300 ODS301 overspeed detection system
5 - 9
Output tab
COMMISSIONING OF A SPEEDSYS300 ODS301
• Overspeed / Underspeed / Acceleration hysteresis and delay
When the respective limit for overspeed or acceleration has been exceeded, the trip signal
automatically latches until it falls below the limit minus the hysteresis. When an underspeed
limit has been violated, the trip signal automatically latches until it rises above the limit plus
the hysteresis. This is shown in the image below.
The delay adds to the total reaction time. A Trip is initiated if the duration of a trip event is at
least as long as this time frame.
• Acceleration cut-in speed
Define this parameter to set the minimal speed for which acceleration alarms are indicated.
Below this speed, no acceleration alarms are evaluated.
5.4.2 Output tab – Analog output
• Speed value for 4 mA / 20 mA
Defines the speed corresponding to the analog current loop outputs of 4 mA and 20 mA,
respectively. Effectively, these parameters define the desired measurement range.
• Error output current
Defines the current that the analog current loop will be driven to when a problem is detected
by the module’s diagnostics (that is, the safe state current value).
See also 5.5.1 Diagnostics tab – Diagnostics .
NOTE: For a SpeedSys300 ODS301 module, only Safety relay 1, Safety relay 2 and the
Analog output are safety outputs and can be used to implement a safety function.
All other outputs are non-safety outputs and must not be used to implement a
safety function.