Siemens SINAMICS PERFECT HARMONY GH180 Function Manual page 332

Glossary
Torque
The force that produces (or attempts to produce) rotation, as in the case of a motor.
Uploading
Uploading is a process by which information is transmitted from the drive to a remote device
such as a PC. The term uploading implies the transmission of an entire file of information (e.g.,
the system program) rather than continued interactive communications between the two
devices. The use of a PC for uploading requires communications software to be available on
the PC.
Variable frequency drive (VFD)
A VFD is a device that takes a fixed voltage and fixed frequency AC input source and converts
it to a variable voltage, variable frequency output that can control the speed of a motor.
VHZ
Is an acronym for Volts per Hertz control, one of the control modes in the drive. This mode is
intended for multiple motors connected in parallel. Therefore, it disables spinning load and fast
bypass. This is essentially open-loop vector control with de-tuned (smaller bandwidth obtained
by reducing the gain) current regulators.
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NXGpro Communication
Function Manual, AB, A5E33486415A