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
D - 3
How do I use a Meggitt vibro
-
meter TQxxx/IQSxxx proximity measurement chain as
APPENDIX D: FREQUENTLY ASKED QUESTIONS (FAQ)
D.2 How do I use a Meggitt vibro - meter TQxxx/IQSxxx proximity
measurement chain as the sensor input to a SpeedSys300 ODS301
module?
The SpeedSys300 ODS301 module is compatible with a wide range of industry-standard
speed measurement chains (sensors/signal conditioners), specifically, proximity, electronic
and magnetic sensors.
NOTE: The SpeedSys300 ODS301 module has three separate input interfaces for
connection to different types of speed sensor but only one sensor / measurement
chain and input channel can be configured and used per module at any one time.
For operation with a particular type of sensor / measurement chain, it is simply necessary to:
•
Use the input interface connector (on the top of the module) that corresponds to the type
of the sensor / measurement chain being used by the application.
NOTE: So for a Meggitt vibro - meter
®
TQxxx/IQSxxx proximity measurement chain,
use the 2-WIRE CURRENT connector, with the following connections:
IQSxxx −24V to ODS301 I− and IQSxxx COM to ODS301 I+.
See
Table 2-5 for further information on the 2-WIRE CURRENT connector.
• Configure the module for operation with the type of the sensor / measurement chain
being used by the application.
In the SpeedSys300 software:
• On the Measurement tab, use Sensor type to configure the type of sensor /
measurement chain, as follows:
2-wire current for operation with proximity (eddy current) sensors.
3-wire voltage for operation with electronic (Hall-effect) sensors.
2-wire voltage for operation with magnetic (variable reluctance) sensors.
NOTE: So for a Meggitt vibro - meter
®
TQxxx/IQSxxx proximity measurement chain,
select Sensor type: 2-wire current.
• On the Measurement tab, use Trigger level - current/voltage and Trigger edge to
configure the trigger parameters for the sensor / measurement chain.
NOTE: So for a Meggitt vibro - meter
®
TQxxx/IQSxxx proximity measurement chain,
select Trigger level - current: 18 mA.
(This default value corresponds to the mid-range of the current output signal for an
IQSxxx signal conditioner.)
And configure Trigger edge to Rising or Falling as required by the application.
• On the Diagnostics tab, use Sensor OK current/voltage range to configure the OK
check levels for the input signal, that is, the current or voltage range expected during
normal operation of the sensor / measurement chain. That is, the range outside of
which the SpeedSys300 ODS301 module’s diagnostics (BIST) should indicate a
problem.