MTS SWIFT 50 GLP Sensor Heavy Trucks - Manual (Page 72)

SWIFT 50 GLP Sensors 72 Troubleshooting
Troubleshooting Guide (part 1 of 11)
Symptom Possible Causes Solution
Transducer Interface (TI)
does not power up (green
power indicator is not lit). If any of the following conditions exist, the
Power indicator next to the Power button will
not turn on (green) when you press the button.
The TI power supply cable
is not connected. Check that the cable is securely connected to the
TI box. At the back of the TI box, the J1 Power
must be connected to a power supply or battery.
The power supply is not
providing power. If a battery is used, check that the battery is
charged. If an external power supply is used,
check that it is plugged into an AC supply, and
that power is turned on. The fan on the top of
the power supply should be on at all times when
the external power supply is ON.
The power supply wiring is
reversed. If using a car battery, check that the wiring is
correct. If the wiring has been reversed and the
power switch turned on, it is likely the fuse has
opened.
The fuse has opened. The TI box is provided with a self-resetting
thermal fuse. If input power exceeds the fuse
limits, or polarity is reversed, the fuse will open.
If the fuse opens, the TI box cannot be used
until the fuse cools enough to reset.
FAIL indicator. An internal failure has
occurred in the TI
electronics. Boot Error: Turn the TI power off and on to
reboot.
Internal Error: See “Hardware Overview”, for
failure codes relating to FAIL indicator.
To get additional information when the fail LED
is on, run TI2STATUS.
Zero Procedure: The Zero
indicators stay on too long,
or they continue to blink
slowly, even after the wheel
has rotated twice. The angular output signal is
not reaching the TI. If the
encoder signal is not
reaching the TI, it may
eventually time out and red
fail indicator will light. Check that all cables are attached and
undamaged. In particular, check the main signal
cable from the transducer to the TI.
Check that the encoder output is present. The
angle output signal from the TI should be a 0–5
V sawtooth output while the transducer is
spinning at a constant velocity.
The red fail indicator will
stay lit if there is no encoder
signal. If the encoder is
disconnected after data
collection has started, the
data collection will time out
and blink slowly. If this signal is not present, check that the slip
ring/encoder assembly has not been damaged. If
you suspect encoder damage, swap the slip ring
assembly with a known functioning unit to
verify it. If the slip ring/encoder assembly is
damaged, call MTS or replace it with a spare
slip ring assembly.
Some or all transducer
output signals read 0 volts
at the TI output even when
a load is present. The TI is not turned on. Check that TI is turned on and the green power
indicator is lit.