Nord Drivesystems SK 200E Series Supplementary Manual page 58

POSICON positioning control – Supplementary manual for series SK 200E and SK 250E-FDS
If the detection of the actual position operates correctly, the position control can be optimised. In
principle, with an increase of the P amplification the axis becomes "harder", i.e. the deviation from the
set position becomes smaller than with smaller amplifications.
The size of the P amplification which is set in P310 of the position control depends on the dynamic
characteristics of the system as a whole. In principle: the greater the masses and the smaller the
friction if the system, the greater is the tendency of the system to oscillate and the smaller is the
maximum possible P amplification. To determine the critical value, the amplification is increased until
the drive unit oscillates about the position (leaves the position and then approaches it again). The
amplification should then be set to 0.5x to 0.7x this value.
For positioning applications with a subordinate speed control (P300 "Servo Mode"), a setting which
deviates from the standard setting of the speed control is usually to be recommended.
– P310 "Speed Ctrl. P" = 100 % ... 150 %
– P311 "Speed Ctrl. I" = 3 %/ms ... 5 %/ms
Pos : 201 /Anleitungen/El ektr oni k/POSICON /6. Parameter/!Parameter [POSICON ] @ 14\mod_1479131872793_388.doc x @ 2303957 @ 1 @ 1
58 BU 0210 en-3117