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Advanced Function
Starting Machine Analyzer operation
(1)Set Stml condition.
" % of rated Torque"................Set the maximum oscillation torque for oscillating the
motor under a random torque command.
(Setting range: 1 to 100%)
"Stroke"...................................Set the rotation range permitted for oscillation,
beginning at the motor position when Machine Analyzer
is started.
If this range is exceeded, Machine Analyzer is stopped
immediately, and the motor is coasted in the vertical
shaft mode or is coasted after deceleration in the
normal mode.(Setting range: 1 to 1000)
REMARKS
• If a measurement result varies, accurate measurement may not have been made.
• Accurate measurement may not be made in a mechanical system whose oscillation torque is too small or whose
friction is large.
In such a case, increase the oscillation torque and restart Machine Analyzer.
• If the oscillation torque is too large relative to the load inertia moment, an overcurrent or similar alarm may occur.
At that time, reduce the oscillation torque and restart Machine Analyzer.
• Starting oscillation automatically switches to the torque control mode and shifts the position. Before starting operation
after oscillation, therefore, always make a home position return.
(2)Select the Stml mode
"Normal mode".......................The inverter operates in the torque control mode and
oscillates the motor randomly.
"Vertical Axis Mode".................A servo lock is placed in the speed control mode,
preventing a fall.
Gain setting must have been made to ensure that
stable servo lock operation will be performed.
REMARKS
In "Vertical Axis Mode"
• The accuracy of 100Hz or less on the low frequency side may become poor.
• The measurement accuracy becomes poor if the position loop gain (Pr. 422) is set too high.
CAUTION
When the machine is a vertical axis, always perform this function in the "Vertical Axis Mode" since a fall may occur.