Siemens SINAMICS G120D List Manual page 225

Re bit 6 = 1:
The following applies for encoderless vector control of induction motors:
For a blocked motor (see p2175, p2177) the time condition in p1758 is bypassed and a change is not made into
open-loop controlled operation.
Re bit 7 = 1:
The following applies for encoderless vector control of induction motors:
If the changeover limits are parameterized too low (p1755, p1756), then they are automatically increased to rugged
values by the absolute amount p1749 * p1755.
The effective time condition for changing over into open-controlled operation is given by Min(p1758, 0.5 * r0384).
Activation can make sense for applications that demand a high torque at low frequencies and therefore low speed
gradients.
Adequate parameterization must be ensured (p1610, p1611).
r1751 Motor model status / MotMod status
Access level: 3
Can be changed: -
Units group: -
Min
-
Description: Displays the status of the motor model.
Bit field: Bit Signal name
00 Controlled operation
01 Set ramp-function generator
02 Stop RsLh adaptation
03 Feedback
04 Encoder operation
05 Holding angle
06 Acceleration criterion
07 Set angular integrator PEM
08 Stop Kt adaptation PEM
09 PolID active PEM SLVC
10 I injection PEM
11 Speed controller output cannot be set to
zero
12 Rs adapt waits
13 Motor operation
14 Stator frequency sign
15 Torque sign
16 Pulse injection active PEM
17 Operation with rugged model feedback
18 Operation of the current model with current
feedback
19 Current feedback in the current model
20 Rugged increase of the changeover limits
21 Motor blocked (RFG stop) PEM
Note: Re bit 17:
Displays the status when enabling the rugged model feedback (p1784) for operation with and without encoder.
The feedback is used to increase the parameter ruggedness of the motor model and is effective in the operating
range of the two-component closed loop current control.
Re bit 18:
Displays the status when enabling the differential current feedback in the current model for operation with encoder.
The function is automatically enabled with p1784 > 0 or p1731 > 0. The feedback is used for a rugged change
between the current model and complete machine model with active rugged model feedback and combination cur-
rent.
Re bit 19:
Displays the currently active stator circuit feedback in current model operation.
© Siemens AG 2012 - 2013 All Rights Reserved
SINAMICS G120D List Manual (LH14), 01/2013
Calculated: -
Scaling: -
Unit selection: -
Max
-
1 signal
Active
Active
Yes
Active
Active
Yes
Active
No
No
No
No
Yes
Yes
Yes
Positive
Motor mode
Yes
Enabled
Enabled
Active
Active
No
Parameters
List of parameters
Data type: Unsigned32
Dyn. index: -
Func. diagram: -
Factory setting
-
0 signal
Inactive
Inactive
No
Inactive
Inactive
No
Inactive
Yes
Yes
Yes
Yes
No
No
No
Negative
Regenerative mode
No
Inhibited
Inhibited
Inactive
Inactive
Yes
FP
6721
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
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