Sensor Technology RWT420, Руководство пользователя

Страница: 10 / 69


Sensor Technology 2016
Page 9
RWT3745V (Rev 2)
Warning Signals
A warning signal is indicated when the transducer detects a condition which impedes normal
operation or the transducer is operating outside of normal operating parameters.
A warning LED sequence is prefixed with a quick succession of alternating red/green flashes,
identifying the LED sequence as a warning condition. A warning sequence will override the
normal operation mode LED.
After a pause a sequence of green or red flashes will indicate which warning conditions are
flagged. The LED sequence will iterate through each of the flags in the table below flashing
the LED for each. A RED flash indicates that a condition has been flagged; a GREEN flash
indicates that a condition is clear.
Once the LED sequence is complete the sequence will restart, this will continue until the
warning has cleared.
Sequence
Number
Warning Flag Reason and Action required
1
Analog Fault CH0
(Analog Torque)
In voltage output mode the analog pin is short circuit, in
current output mode the analog output pin is open
circuit. Check the analog connector wiring for Analog
CH0.
2
Analog Fault CH1
(Analog Speed)
In voltage output mode the analog pin is short circuit, in
current output mode the analog output pin is open
circuit. Check the analog connector wiring for Analog
CH1.
3 Zero Offset High
A torque offset greater than 10% of FSD has been
applied to the measured torque value. The offset is set
when the transducer is zeroed, either by the zero input
on the analog connector or via a digital command.
4 Exceeded Temp
Shaft temperature has exceeded normal operating
conditions. Temperature compensation may no longer
be effective or calibration valid.
5 Over Torque Torque greater than the FSD has been applied.
6 Critical Over Torque Torque greater than 120% of the FSD has been
applied. Contact the factory if the warning continues.
7 Head Disconnect
The transducer head has been disconnected. Power off
the transducer electronics and check the cabling. This
warning is only relevant for transducers with separate
heads.
For example, the following sequence would indicate warnings for ‘Analog Fault CH0’ and
‘Zero Offset High‘: