Mitsubishi Electric MDS-E, Instruction Manual

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MDS-E/EH Series Instruction Manual
6 Spindle Adjustment
347 IB-1501229-F
6.1.7 Spindle C Axis Adjustment (For Lathe System)
(1) Setting the gain
For spindle C axis speed loop gain, SP008 (speed loop gain 2), speed loop gain set 2, which consists of SP009
(speed loop lead compensation 2), and SP010 (speed loop delay compensation 2), is used. Thus, SP035 has to be
set as follows. For position loop gain, set standard 33 to SP002 (position loop gain, interpolation mode).
< Related servo parameters >
Set the spindle and interpolation axis.
(2) Gain adjustment and accuracy test during C axis operation
[1] Set the "Time-series data measurement" with NC Analyzer as follows during stopped in C axis mode (servo
ON status) or when executing cutting feed with G01 F20. Then check the droop fluctuation is within 10°/1000.
< NC Analyzer setting (Time-series data measurement) >
Offset is 2.5V.
Parameter Setting value
SP002 33
SP008 SP005 setting value set in "Basic Adjustments" (Initial setting value: 150)
SP009 1900
SP010 0
SP035 0200: Speed loop gain set 2 selection (validate bit9)
Parameter Setting value
SV003 Set the same value as spindle parameter "SP002"
SV004 Set it when using SHG control (when not using, set to "0")
SV057 Set it when using SHG control (when not using, set to "0")
Get Waveform type
CH1 Position droop
CH2 Current command