MTS SWIFT 20 Ultra Sensor - Manual (Page 37)

Low-Profile Transducer Interface
SWIFT 20 Sensors Hardware Overview 37
Zero LEDs
These indicators indicate the current state of the zero process. The
ZeroAlgorithm value (0, 1, 3, or 4) you selected in the calibration file will
determine the state of the indicators when you press either the Bridge Zero or the
Angle Zero button.
• The indicators are off under normal operating conditions
• In non-spinning applications using ZeroAlgorithm=0 (required), press the
Bridge Zero button. The Bridge Zero indicator will light for 3–4 seconds
while the Low-Profile TI is completing the bridge zero process.
• In spinning applications using ZeroAlgorithm=1 (alternate), pressing the
Bridge Zero button will light the Bridge Zero indicator continuously (no
flashing) until the wheel is spun for one revolution (index-to-index). This
may take up to two full revolutions, depending on where the encoder index
pulse starts. After one revolution of data is collected, the Bridge Zero
indicator will flash rapidly for 30 seconds while the data is analyzed and the
bridge zeroes are calculated.
• When you press the Angle Zero switch, the Angle Zero indicator will light
for a few seconds while the Low-Profile TI reads the current angle and sets
the angle offset value.
• In spinning applications using ZeroAlgorithm=3 (alternate), both the
Bridge Zero and Angle Zero indicators will light continuously until the
wheel is spun for one revolution (index-to-index). After one revolution of
data is collected, both indicators will blink rapidly for approximately two
minutes while the Low-Profile TI analyzes the data and calculates both the
angle offset and bridge zero values.
• In spinning applications using ZeroAlgorithm=4 (preferred), the Bridge
Zero and Angle Zero indicators will initially be off. After the wheel is
turned at least 1.25 turns, in order for the Low-Profile TI to locate the index,
the level can be installed and leveled. With the wheel orientated such that Fz
on the axis icon on the transducer is facing up, pressing the Bridge Zero
button will light the Bridge Zero indicator continuously for a few seconds,
then the indicator will start blinking rapidly. The Angle Zero indicator will
start blinking slowly.
• With the wheel orientated such that Fx on the axis icon on the transducer is
facing up, pressing the Angle Zero button, will light the Angle Zero
indicator continuously for a few seconds. Then both the Bridge Zero and
Angle Zero indicators will turn off.
• If the algorithm was unable to calculate zero, the Fail indicator will light
momentarily and both the Bridge Zero and Angle Zero indicators will
blink continuously at approximately a 1 Hz rate.
• If no successful zero has been performed for the currently selected zero
algorithm, the Bridge Zero and Angle Zero indicators will flash (at
approximately a 1 Hz rate), until a zero has been initiated. Use the
TISTATUS utility for a detailed explanation of the problem.
After successful completion of a zero algorithm, the Bridge Zero and Angle
Zero indicators turn off. Should the system zero fail, the indicators will return to
a flashing state.