Lenze E94P PositionServo with MVOB - Manual (Page 88)

86 L S94H201E_13426446_EN
Operation
Step 4: Check Motor Currents
Set the oscilloscope channel 2 to ‘Phase Current RMS’
Channel 2:
Signal
= “Phase Current RMS”
Scale = as appropriate to peak current limit set in drive parameters (MotionView)
Timebase: = as appropriate to the “Period” of the moves being generated
Trigger:
= Ch1 Rising Edge
Level: = 10 Pulses
Observe the Current waveform to make sure that there are no significant oscillations during the steady state
sections of the position profile (times when target position is not changing). If so then decrease the gains
values until the oscillations are either removed or reduced to an acceptable level.
Minimal oscillation when motor positioned to
target position.
8) Setting the Position Error Limits
Look at the position error waveform on the oscilloscope. Note the maximum time that position errors exist
(from the time axis of the scope) and the maximum peak errors being seen (from the value at the top of
the screen). Use this values to set the position error limits to provide suitable position error protection for
the application.
Open the ‘Limits’ folder and ‘Position Limits’ sub-folder within the MotionView node tree and set suitable
values for the ‘Position Error’ and ‘Max Error Time’ parameters.
Maximum error and time period for error
existing.