YOKOGAWA FA-M3 VITESSE F3CX04-0N, User Manual

Page: 130 / 144

D2-2
IM 34M06H63-01E 1st Edition : July, 2003-00
(1) Input does not change, or fluctuates excessively
If input does not change, or fluctuates excessively, there may be a problem with sensor
connection, module usage, or register preset values. Follow the steps below to locate the
cause.
- Confirm that the sensor is securely and correctly connected.
- Confirm that the registers are correctly set. See the table below.
Data Position Number
Symbol Content Check Items See Also
Loop1 Loop2 Loop3 Loop4
71 SETUP Setup Is SETUP set to 1?
It must be set to 0. B2.3
81 FREQ Power supply frequency
selection Is FREQ correctly set to match the frequency of
the power supply used?
It must be correctly set. B3.1.1
82 SMP Input sampling period Is the channel whose input does not change
available for use?
To use channels 3 and 4, Input sampling period
should be set to 200 ms. B3.1.2
83 MD12 Monitoring mode Is the channel whose input does not change
available for use?
If the channel set to ‘disabled’, enable it. B3.1.3
84 MD34
142 342 542 742 IN Input type selection Is the input type appropriate for the sensor type
used?
Set the input type to match the sensor used. B3.2.1
172 372 572 772 FL Input filter Is excessive noise interfering with the input?
Set FL to an appropriate value. C2.10