Siemens SINAMICS SM150 - Table 8-1 Parameter

Parameter Setting
p1075 Supplementary setpoint
p1076 Supplementary setpoint scaling
r1077 Supplementary setpoint effective
r1078 Total setpoint effective
These parameters concern connector inputs to which the setpoint values are connected.
Function diagram
FP 3030
Direction reversal
A reversal of the rotational direction is necessary under the following conditions:
● When the drive should be operated in both directions of rotation.
● If the cables were connected with an incorrect phase sequence.
Note
Note that only one direction of rotation is enabled in the factory setting.
To subsequently reverse the phase sequence, you must interchange the motor cables or enter
a negative setpoint. A direction reversal cannot be achieved with parameter settings. Direction
of rotation changeover is initiated as follows:
● Controlled via PROFIBUS using control word 1, bit 11
● Controlled from the cabinet operator panel ("LOCAL mode" function) with the "direction of
rotation changeover" key.
Table 8-1 Parameter
Parameter Setting
p1110 Inhibit negative direction
p1111 Inhibit positive direction
p1113 Direction of rotation reversal
For further information, see the function diagram 3040.
Skip frequency bands and minimum speed
Variable-speed drives can generate critical whirling speeds within the control range of the
entire drive train. This prevents steady-state operation in their proximity, that is,
the range of critical whirling speeds can still be passed through. The drive, however, must not
remain here because this can cause excitation of the sympathetic oscillations.
The suppression bandwidths allow this range to be blocked for steady-state operation.
Because the points at which critical whirling speeds occur in a drive train can vary depending
Operation
8.5 Functions
SINAMICS SM150 6SL3845-2NN41-8AD2
100 Operating Instructions Rev.201910281310 EXAMPLE