Siemens SINAMICS S120 Function Manual page 704

Applications
12.5 Motor changeover
● 4 motor contactors with positively driven auxiliary contacts (3 NC contacts, 1 NO contact)
● 4 motors, 1 Control Unit, 1 infeed, and 1 Motor Module
Figure 12-6
Table 12-1
Parameter
p0130
p0180
p0186[0...3]
p0820, p0821
p0822 to p0824
p0826[0...3]
p0827[0...3]
r0830.0 to r0830.3
p0831[0...3]
p0833.0..2
Procedure for changeover between motor data sets
1. Start condition:
For synchronous motors, the actual speed must be lower than the speed at the start of field
weakening. This prevents the regenerative voltage from exceeding the terminal voltage.
2. Pulse inhibit:
The pulses are inhibited after a new drive data set is selected with p0820 to p0824.
702
Example of motor changeover
Settings for the example
Settings
4
4
0, 1, 2, 3
Digital inputs DDS se‐
lection
0
0, 1, 2, 3
0, 1, 2, 3
Digital outputs, contac‐
tors
Digital inputs, auxiliary
contacts
0, 0, 0
Remark
Configure four MDS.
Configure four DDS.
The MDS are assigned to the DDS.
The digital inputs for motor changeover via DDS selec‐
tion are selected. Binary coding is used (p0820 = bit 0,
etc.).
Different numbers indicate a different thermal model.
Assigning the bit from r0830 to the MDS. If p0827[0] = 1,
for example, bit p0830.1 is set when MDS0 is selected
via DDS0.
The digital outputs for the contactors are assigned to the
bits.
The digital inputs for the feedback signal of the motor
contactors are assigned.
The drive controls the contactor circuit and pulse inhib‐
ition. Parking bit (Gn_ZSW14) is set.
Function Manual, 06/2019, 6SL3097-5AB00-0BP2
Drive functions