Siemens SINAMICS S120 Function Manual page 821

Table 11- 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:
2. Pulse inhibit:
3. Open the motor contactor:
4. Change over the drive data set:
5. Energize the motor contactor:
6. Enable the pulses:
Drive functions
Function Manual, (FH1), 01/2013, 6SL3097-4AB00-0BP3
Settings for the example
Settings
4
4
0, 1, 2, 3
Digital inputs DDS
selection
0
0, 1, 2, 3
0, 1, 2, 3
Digital outputs,
contactors
Digital inputs, auxiliary
contacts
0, 0, 0
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.
The pulses are inhibited after a new drive data set is selected with p0820 to p0824.
Motor contactor 1 is opened (r0830 = 0) and the status bit "Motor changeover active"
(r0835.0) is set.
The requested data set is activated (r0051 = requested data set).
After the feedback signal (motor contactor opened) for motor contactor 1, the appropriate
bit of r0830 is set and motor contactor 2 is energized.
After the feedback signal (motor contactor closed) for motor contactor 2, the bit "motor
changeover active" (r0835.0) is reset and the pulses are enabled. The motor has now
been changed over.
Remark
Configure four MDS
Configure four DDS
The MDS are assigned to the DDS.
The digital inputs for motor changeover via DDS
selection 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
inhibition. Parking bit (Gn_ZSW14) is set.
Applications
11.2 Description
819