User Manual

SINAMICS G120 CU230P-2 Control Units
List Manual, 04/2018, A5E33838102
239
2 Parameters
2.2 List of parameters
Note: Bits 0 ... 2 only have an influence for sensorless vector control, bit 2 is pre-assigned depending on p0500.
For bit 2 = 1:
The sensorless vector control is effective down to zero frequency. A change is not made into the open-loop speed
controlled mode.
This operating mode is possible for passive loads. These include applications where the load itself does not generate
any active torque and therefore only acts reactively to the drive torque of the induction motor.
If bit 2 = 1, then bit 3 is automatically set to 1. Manual de-selection is possible and may be sensible if the saturation
characteristic (p1960) was not measured for third-party motors. Generally, for standard SIEMENS motors, the
already pre-assigned (default value) saturation characteristic is adequate.
When the bit is set, the selection of bits 0 and 1 is ignored.
For bit 2 = 0:
Bit 3 is also automatically deactivated.
For bit 6 = 1:
The following applies for sensorless 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.
For bit 7 = 1:
The following applies for sensorless 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 obtained from the minimum value of
p1758 and 0.5 * r0384.
Is recommended that bit 7 is activated for applications that demand a high torque at low frequencies, and at the same
time require low speed gradients..
Adequate parameterization of the current setpoint must be ensured (p1610, p1611).
For bit 8 = 1: no influence on the functionality of bits 0, 1, 2
The following applies for sensorless vector control of induction motors:
Changeover into open-loop speed controlled operation is no longer dependent on the speed setpoint (except for
OFF3), but instead is essentially dependent on time condition p1758. As a consequence, a drive can be started or
reversed in closed-loop speed controlled operation with setpoints from an external control system, if these briefly lie
in the open-loop speed control range.
Description: Displays the status of the motor model.
Dependency: Not visible with application class: "Standard Drive Control" (SDC, p0096 = 1)
r1751 Motor model status / MotMod status
Access level: 4 Calculated: - Data type: Unsigned32
Can be changed: - Scaling: - Dyn. index: -
Unit 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 -