SKF IMx-16Plus, Руководство пользователя

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INSTALLATION AND OPERATING INSTRUCTIONS
Troubleshooting
SKF Multilog On-line System IMx-16Plus
User Manual
Revision Letter A 43 (66)
If the sensor loop resistance is found to be particularly low or high (outside
the range 800 to 1 500
Ω
), check for cable or sensor damage and connection
issues.
If the system indication, voltage and resistance measurements appear to
reasonably agree but the resulting temperature is closer to ambient, check
the sensor remains correctly in position, on or in the machine.
If no reason for the measurement error is identified, contact TSG for advice.
2.9.3.4 Checking analogue input channels
Analogue inputs refer
to ‘other voltage inputs’ (not accelerometers, 4
-20 mA signals
or PT1000 sensors). In case of unexpected measurement values, check the channel
configuration especially scale, zero level and choice of engineering units. Ensure that
the cable check function enable/disable setting is appropriate for the signal applied.
1. Identify the input terminals where the channel in question is connected to the
IMx-16Plus and verify that the connections are correct. If all appears OK,
measure the DC voltage (V) across the channel input using a digital
voltmeter. Is the voltage as expected, for the connected signal, type?
NO: Continue to step
2 .
YES: The sensor circuit and cabling appear essentially OK, double check the
channel assignment and its configuration. If the measurement is DC and no
reason for the measurement error is found, contact TSG for advice.
If the measurement is AC, it may be necessary to substitute another sensor
or simulate a signal, to effectively test the loop.
2. Disconnect both signal wires from the terminals/connectors and recheck the
DC voltage across them. Is the voltage now as expected, for the connected
signal, type?
NO: Problem appears to be related to the signal loop connected to the IMx
input. Continue with further checks on the source equipment and the integrity
of the interconnecting cables.
YES: Problem appears to be related to the IMx (hardware, installation or
configuration) or to a compatibility issue with the sensor. If on rechecking the
aspects advised above, no reason for the measurement error is found,
contact TSG for advice.