Meggitt vibro-meter SpeedSys300 ODS301, User Manual

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Document reference MAODS301/E USER MANUAL
Edition 4 - May 2022 SpeedSys300 ODS301 overspeed detection system
3 - 17
Installation considerations
INSTALLATION OF A SPEEDSYS300 ODS301
See also 2.2 SpeedSys300 ODS301 module connectors .
In applications where a SpeedSys300 ODS301 module is connected to circuitry (sensor /
measurement chain) installed in a potentially explosive atmosphere, it is the user’s
responsibility to ensure that the general installation regulations for explosion protection in
accordance with EN 60079-14 and the applicable safety directives are all observed.
See also
3.2.3 Grounding , 3.2.8 Sensor / input channel interface circuitry and 3.2.12 Safety
instructions – potentially explosive atmospheres .
3.2.8 Sensor / input channel interface circuitry
The SpeedSys300 ODS301 module’s sensor / input channel interfaces (proximity, electronic
and magnetic) are Ex certified and protected against over-voltage and overload.
Supplying high voltages to the input circuits can blow the internal protection fuse used –
leading to an inactive module.
It is strongly recommended to verify that the sensor / input channel voltages do not exceed
the input limits of the SpeedSys300 ODS301 module’s interfaces before powering the
module.
NOTE: Refer to the SpeedSys300 ODS301 overspeed detection system data sheet for
further information.