Description:
Minimum operating frequency for rugged operation.
If the minimum value is greater than the lower changeover limit parameterized with p1755 * (1 - 2 * p1756), then the
difference is displayed using p1749 * p1755. The parameter value cannot be changed.
Dependency:
See also: p1755, p1756
p1750[0...n]
Motor model configuration / MotMod config
Access level: 3
Calculated:
CALC_MOD_LIM_REF
Data type: Unsigned16
Can be changed: T, U
Scaling: -
Dynamic index: DDS, p0180
Unit group: -
Unit selection: -
Function diagram: -
Min:
-
Max:
-
Factory setting:
0000 0000 0000 0000 bin
Description:
Sets the configuration for the motor model.
Bit 0 = 1: Forces open-loop speed-controlled starting (ASM).
Bit 1 = 1: Forces the system to pass through frequency zero, open-loop-controlled (ASM).
Bit 2 = 1: Drive remains in full closed-loop control mode, even at zero frequency (ASM).
Bit 3 = 1: Motor model evaluates the saturation characteristic (ASM).
Bit 6 = 1: If the motor is blocked, sensorless vector control remains speed-controlled (ASM).
Bit 7 = 1: Use rugged switchover limits to switchover the model (open-loop/closed-loop controlled) for regenerative
operation (ASM).
Bit 8 = 1: Open-loop speed controlled operation independent of the speed setpoint (except for OFF3) (ASM).
Bit field:
Bit
Signal name
1 signal
0 signal
FP
00
Controlled start
Yes
No
-
01
Controlled through 0 Hz
Yes
No
-
02
Closed-loop ctrl oper. down to zero freq. for passive loads
Yes
No
-
03
Motor model Lh_pre = f(PsiEst)
Yes
No
-
06
Closed-loop/open-loop controlled (PMSM) for a blocked
motor
Yes
No
-
07
Use rugged changeover limits
Yes
No
-
08
Closed-loop controlled until wait time p1758 has expired
Yes
No
-
Dependency:
See also: p0500
CAUTION
Do not use bit 6 = 1 if the motor can be slowly reversed by the load at the torque limit. Long delay times due to blocking
(p2177 > p1758) can cause the motor to stall. In this case you should deactivate the function or use closed-loop control
throughout the speed range (note the information re bit 2 = 1).
Parameters
7.2 Parameter list
SINAMICS G120X converter
702
Operating Instructions, 06/2019, FW V1.01, A5E44751209B AC
