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7.4.7
Current setpoint filters
Description
The current setpoint filters are for suppressing cyclic disturbance variables that can be
caused, for example, by mechanical vibrations in the drive train.
The current actual value filters can be set as follows:
● 2nd order lowpass (PT2: -40 dB/decade)
● General 2nd order filter
Bandstop and low-pass with reduction are converted into the parameters of the general 2nd
order filter.
The current actual value filters are activated with p1656.0 = 1 or p1656.1 = 1. The properties
of the current actual value filters are set in p1657 to p1666.
As long as changes to the data of the current setpoint filter are being made, the conversion
of the new filter data can be prevented using p1699 = 1.
When p1699 = 0 is set, the calculation will be performed and the new values applied.
Function diagram
FP 6710
Parameters
• p1655[0] CI: Current setpoint filter 1 natural frequency tuning
• p1655[1] CI: Current setpoint filter 2 natural frequency tuning
• p1656.0
• p1657
• p1658
• p1659
• p1660
• p1661
• p1656.1
• p1662
• p1663
• p1664
• p1665
• p1666
• p1699
Enclosed Drives
Operating Instructions, 12/2018, A5E36652151A
7.4 Vector speed/torque control with/without an encoder
Current setpoint filters
Current setpoint filter 1 activation
Current setpoint filter 1 type
Current setpoint filter 1 denominator natural frequency
Current setpoint filter 1 denominator damping
Current setpoint filter 1 numerator natural frequency
Current setpoint filter 1 numerator damping
Current setpoint filter 2 activation
Current setpoint filter 2 type
Current setpoint filter 2 denominator natural frequency
Current setpoint filter 2 denominator damping
Current setpoint filter 2 numerator natural frequency
Current setpoint filter 2 numerator damping
Filter data acceptance
Setpoint channel and closed-loop control
485
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