Functions, monitoring and protective functions
9.3 Drive functions
Enclosed Drives
Operating Instructions, 12/2018, A5E36652151A
535
Figure 9-7
Example of motor changeover
Table 9- 4
Settings for motor changeover (example)
Parameter
Settings
Comment
p0130
2
Configure 2 MDS
p0180
2
Configure 2 DDS
p0186[0..1]
0, 1
The MDS are assigned to the DDS.
p0820
Digital input, DDS selection
The digital input to change over the motor is selected via the
DDS. Binary coding is used (p0820 = bit 0, etc.).
p0821 ... p0824
0
p0826[0..1]
1, 2
Different numbers mean different thermal models.
p0827[0..1]
0, 1
Assign the bit from r0830 to the MDS. If p0827[0] = 0, for
example, bit r0830.0 is set via DDS0 when MDS0 is selected.
r0830.0 and r0830.1 Digital outputs, auxiliary contactors The digital outputs for the auxiliary contactors are assigned to
the bits.
p0831[0..1]
Digital inputs, auxiliary contacts
The digital inputs for the feedback signal of the motor
contactors are assigned.
p0833.00 and .01
0, 0
The drive controls the contactor circuit and pulse inhibition.
Motor changeover sequence
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 suppression:
The pulses are suppressed following the selection of a new drive data set using p0820 to
p0824.
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