Siemens SINAMICS PERFECT HARMONY GH180 - Cable Inductance Compensation; Cable Inductance Compensation Parameters; Long Cable Applications

8.24 Long Cable Applications
8.24.1 Cable Inductance Compensation
Long cable applications present a challenge as the cables become a signi󹪝cant contribution to
the overall load impedance.
Compensation for cable inductance a󹪜ects the output voltage during transient conditions of
current based on the output fundamental frequency.
Previously, compensation had been performed for cable resistance only. Drive base impedance
is calculated as:
Zbase = [Vrated/√3] * [1/Irated]
where:
Zbase = Drive base impedance
Vrated = Drive rated output voltage
Irated = Drive rated output current
The cable impedance must be compensated to ensure that the motor is getting the proper
terminal voltage.
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Figure 8-35 Motor Terminal vs. Cemf
8.24.2 Cable Inductance Compensation Parameters
Parameters for Cable Inductance Compensation
Refer to the Output Connection Menu (2900) in Section Options for Drive Menu (2) of
Chapter Parameter Assignment / Addressing for the parameter associated with this function:
• Cable inductance (2941)
Advanced Operating Functions
8.24 Long Cable Applications
NXGPro+ Control Manual
Operating Manual, A5E50491925A 333