Gearbox Stage Selection - Siemens SINAMICS S120 Configuration Manual

5.4.4

Gearbox stage selection

When changing the gearbox stage, the following information must be carefully observed:
● Only change over the gearbox stage at standstill; e.g. while changing the tool.
● During selection, the direction of rotation should be changed approximately 5 times per
● The gearbox stage should not be changed without oscillation.
● The motor may only start to accelerate 200 ms after the gear stage has been changed.
● The selection must be monitored using a time relay.
Figure 5-7 Function sequence when changing the gearbox stage
1PH4 Induction Motors
Configuration Manual, (APH4S), 08/2008, 6SN1197-0AD64-0BP1
second. The gears normally mesh at the first direction of rotation change so that selection
times of between 300 and 400 ms can be achieved.
If the selection command was not able to be executed, the selection must be reversed
after 2 s. A time limit of 10 s should be provided for approx. 4 to 5 additional selection
operations.
Motor components
5.4 Gear
107