Function library
Function blocks
3.5.30 Digital frequency processing (DFSET)
3−179
l
EDSVS9332P−EXT DE 2.0
3.5.30.2 Processing of correction values
Speed trimming
This is used to add correction values, e.g. by a superimposed control loop. This enables the drive to
accelerate or decelerate.
l Adds an analog value at DFSET−N−TRIM (see C0537) to the speed setpoint.
l Adds a speed value at DFSET−N−TRIM2 (see C1258) to the speed setpoint.
– The speed trimming via this input is more precise.
Phase trimming
This adds a setpoint at DFSET−A−TRIM (see C0536/3) to the phase setpoint and changes the rotor
position to the setpoint with the number of increments provided in either direction (drive is leading
or lagging). The phase is trimmed within a range of ±32767 increments (¢ ±1/2 revolution). Every
analog signal can be used as a source.
l The entry is made in increments (one revolution ¢ 65536 increments).
l When analog values are entered, 100% correspond to 1/4 revolution = 16384 increments.
l Extension of the setting range with a multiplier under C0529.
Angular offset
Addition of a fixed phase offset under C0252 to the setpoint of the drive.
Speed−proportional phase setting
Leading or lagging of the phase with rising speed.
l Enter a suitable setting in increments under code C0253.
l The set phase offset is reached at 15000 rpm of the drive (linear relationship).
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