Siemens SINAMICS G130 - Unit Changeover

Functions, monitoring, and protective functions
9.2 Drive functions
Inverter chassis units
420 Operating Instructions, 07/2016, A5E00331449A
WARNING
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
and correct if necessary.
Function diagram
FD 4704, 4715
Encoder evaluation
FD 6730, 6731
Interface to the Motor Module
Parameters
•
r0069
Phase currents actual value
•
r0089
Phase voltage actual value
•
p0410
Encoder i
nversion actual value
•
p1820
Reverse output phase sequence
•
p1821
Direction of rotation
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.