Description:
Sets the threshold value for the system deviation of the technology controller, which controls holding the controller
integral component in the range of the skip speeds of the ramp-function generator.
Recommendation:
To avoid speed setpoint steps in the range of the skip speeds, we recommend setting p2252 bit 4 = 1 (ramp-function
generator bypass deactivated).
Dependency:
The parameter has no effect for p2252 bit 5 = 1 (integrator hold deactivated).
See also: r2273
Note
Only p2251 = 0:
If the output signal of the technology controller reaches a skip band in the speed setpoint channel, then the integral
component of the controller is held, if at the same time, the system deviation is lower than the threshold value set here.
By holding the integral component, it can be avoided that the controller oscillates in the range of the skip bands.
r2344
CO: Technology controller last speed setpoint (smoothed) / Tec_ctrl n_setp_sm
Access level: 3
Calculated: -
Data type: FloatingPoint32
Can be changed: -
Scaling: PERCENT
Dynamic index: -
Unit group: -
Unit selection: -
Function diagram: 7958
Min:
- [%]
Max:
- [%]
Factory setting:
- [%]
Description:
Displays the smoothed speed setpoint of the technology controller prior to switching to operation with fault response
(see p2345).
Dependency:
See also: p2345
Note
Smoothing time = 10 s
p2345
Technology controller fault response / Tech_ctrl flt resp
Access level: 3
Calculated: -
Data type: Integer16
Can be changed: T, U
Scaling: -
Dynamic index: -
Unit group: -
Unit selection: -
Function diagram: 7958
Min:
0
Max:
2
Factory setting:
0
Description:
Sets the response of the technology controller to the occurrence of fault F07426 (technology controller actual value
limited).
The fault response is executed if status bit 8 or 9 in the technology controller status word r2349 is set. If both status
bits are zero, a switch back to technology controller operation will follow.
Value:
0:
Function inhibited
1:
On fault: Changeover to r2344 (or p2302)
2:
On fault: Changeover to p2215
Dependency:
The parameterized fault response is only effective if the technology controller mode is set to p2251 = 0 (technology
controller as main setpoint).
See also: p2267, p2268, r2344
See also: F07426
NOTICE
Dependent upon the application, the changing over of the setpoint when fault F07426 occurs can lead to the fault
condition disappearing and the re-activation of the technology controller. This can repeat itself and cause limit
oscillations. In this case, a different fault response or a different fixed setpoint 15 for the fault response p2345 = 2
should be selected.
Parameters
7.3 Parameters
SINAMICS G120XA converter
624
Operating Instructions, 03/2019, FW V1.0, A5E44751205B AB
Summary of Contents for SINAMICS G120XA
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