SINAMICS G120 CU250S-2 Control Units
List Manual, 09/2017, A5E33842890
195
2 Parameters
2.2 List of parameters
Description:
Displays the total effective setpoint.
The value indicates the sum of the effective main setpoint and supplementary setpoint.
Description:
Sets the time with which new speed setpoints are interpolated.
With interpolation, the higher-level control adapts the speed setpoint steps to the time grid of the setpoint channel.
Recommendation:
For non-synchronous operation, a setting to the maximum time difference between two setpoints is recommended.
For sensorless vector control, interpolation should always be activated if the ramp-up and ramp-down times of the
ramp-function generator are very short. The drive must be able to follow the external speed setpoint (the drive does
not ramp up at the torque limit).
Note:
For acceleration precontrol of the speed controller, interpolation prevents torque peaks from occurring if the ramp-up
or ramp-down times in the setpoint channel are zero.
When exiting commissioning, the parameter is preset using the automatic calculation if, as setpoint source for the
main or supplementary setpoint, a PZD receive word is already set and the ramp-up time is zero.
Interpolation is limited to 127 cycles of the setpoint channel.
p1079 = 0 ms: interpolation is deactivated.
p1079 = 0.01 ms: the interpolation is automatically determined the first time that the speed setpoint is changed. After
this, no other changes are made if the send times of the external control increase. Writing to p1079 again initiates the
automatic adaptation of the interpolation time.
p1079 > 0.01 ms: interpolation is performed corresponding to the ratio to the computation clock cycle.
Description:
Sets the lowest possible motor speed.
This value is not undershot in operation.
Dependency:
Refer to: p1106
Notice:
The effective minimum speed is formed from p1080 and p1106.
Note:
The parameter value applies for both motor directions.
In exceptional cases, the motor can operate below this value (e.g. when reversing).
Description:
Sets the scaling for the maximum speed (p1082).
For a higher-level speed control, this scaling allows the maximum speed to be briefly exceeded.
r1078
CO: Total setpoint effective / Total setpoint eff
Access level:
3
Calculated:
-
Data type:
FloatingPoint32
Can be changed:
-
Scaling:
p2000
Dyn. index:
-
Unit group:
3_1
Unit selection:
p0505
Func. diagram:
3030
Min Max
Factory
setting
- [rpm]
- [rpm]
- [rpm]
p1079
Interpolator clock cycle for speed setpoints / Interp_cyc n_set
CU250S_V_CAN
CU250S_V_DP
CU250S_V_PN
Access level:
3
Calculated:
p0340 = 1
Data type:
FloatingPoint32
Can be changed:
U, T
Scaling:
-
Dyn. index:
-
Unit group:
-
Unit selection:
-
Func. diagram:
-
Min Max
Factory
setting
0.00 [ms]
127.00 [ms]
0.00 [ms]
p1080[0...n]
Minimum speed / n_min
Access level:
1
Calculated:
-
Data type:
FloatingPoint32
Can be changed:
C(1), T
Scaling:
-
Dyn. index:
DDS, p0180
Unit group:
3_1
Unit selection:
p0505
Func. diagram:
3050, 8022
Min Max
Factory
setting
0.000 [rpm]
19500.000 [rpm]
0.000 [rpm]
p1081
Maximum speed scaling / n_max scal
Access level:
2
Calculated:
-
Data type:
FloatingPoint32
Can be changed:
U, T
Scaling:
PERCENT
Dyn. index:
-
Unit group:
-
Unit selection:
-
Func. diagram:
3050, 3095
Min Max
Factory
setting
100.00 [%]
105.00 [%]
100.00 [%]