Unit Changeover - Siemens SINAMICS G130 Operating Instructions Manual

Functions, monitoring, and protective functions
9.2 Drive functions
Danger to life as a result of an excessively high torque due to an inappropriate phase
sequence of the motor after direction reversal
If a drive is synchronized to the line supply, when the direction is reversed, high torques
can be generated when connecting to the line supply if the phase sequence of the line
voltage does not match the phase sequence of the rotating motor. This high torque can
destroy the coupling between the motor and load and therefore result in death or severe
injury.
• As a consequence, for this constellation, check the phase sequence of the VSM wiring
Function diagram
FD 4704, 4715
FD 6730, 6731
Parameters
• r0069
• r0089
• p0410
• p1820
• p1821
9.2.16

Unit changeover

Description
Parameters and process variables for input and output can be switched to a suitable units
system (SI units, US units or referenced variables (%)) with the help of the unit changeover
function.
The following constraints apply to the unit changeover:
● Unit changeover is only possible for the "VECTOR" drive object.
● Parameters of the rating plate of the drive converter or the motor rating plate can be
changed over between SI/US units; however, a per unit representation is not possible.
● Once the changeover parameter has been changed, all parameters that are assigned to a
unit group depending on this parameter are jointly changed over to the new unit.
420
WARNING
and correct if necessary.
Encoder evaluation
Interface to the Motor Module
Phase currents actual value
Phase voltage actual value
Encoder inversion actual value
Reverse output phase sequence
Direction of rotation
Inverter chassis units
Operating Instructions, 07/2016, A5E00331449A