Operating Instructions
List of parameters
Parameters
1-205
© Siemens AG 2008 - 2013 All Rights Reserved
SINAMICS G120 CU230P-2 Control Units List Manual (LH9), 01/2013
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).
Description: Displays the status of the motor model.
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.
Re bit 20:
Displays the currently effective increase of the changeover limits by the value p1749 * p1755.
Re bit 21:
For a blocked synchronous motor, the speed ramp-function generator is held in the open-loop speed controlled
operating range if the torque setpoint reaches the torque limit and the speed is less than the threshold value in
p2175.
r1751 Motor model status / MotMod status
Access level: 4 Calculated: - Data type: Unsigned32
Can be changed: - Scaling: - Dyn. index: -
Units group: - Unit selection: - Func. diagram: -
Min Max Factory setting
- - -
Bit field: Bit Signal name 1 signal 0 signal FP
00 Controlled operation Active Inactive 6721
01 Set ramp-function generator Active Inactive -
02 Stop RsLh adaptation Yes No -
03 Feedback Active Inactive -
05 Holding angle Yes No -
06 Acceleration criterion Active Inactive -
11 Speed controller output cannot be set to
zero
Yes No -
12 Rs adapt waits Yes No -
13 Motor operation Yes No -
14 Stator frequency sign Positive Negative -
15 Torque sign Motor mode Regenerative mode -
17 Operation with rugged model feedback Enabled Inhibited -
18 Operation of the current model with current
feedback
Enabled Inhibited -
19 Current feedback in the current model Active Inactive -
20 Rugged increase of the changeover limits Active Inactive -