SINAMICS G130/G150
List Manual (LH2), 07/2016, A5E03263479A
447
2 Parameters
2.2 List of parameters
Description: Separately excited synchronous motor:
Sets the upper speed for the transition "n_set -> n_act" in sensorless operation.
This value is entered as a percentage of p1755.
Induction motor without speed encoder:
Depending on the machine data, the drive has calculated a minimum value of the 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: Refer to: p1748, p1752, p1755, p1756
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 4 = 1: Time-controlled change between current and observer models (ASM).
Bit 5 = 1: HF signal injection to estimate the continuous rotor position (PMSM).
Bit 6 = 1: If the motor is blocked, sensorless vector control remains speed-controlled (ASM).
For a stalled (blocked) synchronous motor (PMSM), the encoderless vector control remains open-loop speed
controlled.
Bit 7 = 1: Use rugged switchover limits to switchover the model between open-loop and closed-loop controlled
operation (ASM).
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).
p1749[0...n] Motor model upper changeover speed / increase changeover speed /
Up/incr n_chngov
VECTOR_G (n/M) Can be changed: U, T Calculated: - Access level: 3
Data type: FloatingPoint32 Dyn. index: DDS, p0180 Func. diagram: -
P-Group: Closed-loop control Unit group: - Unit selection: -
Not for motor type: PMSM, REL Scaling: - Expert list: 1
Min Max Factory setting
0.0 [%] 99.0 [%] 50.0 [%]
p1750[0...n] Motor model configuration / MotMod config
VECTOR_G (n/M) Can be changed: U, T Calculated:
CALC_MOD_LIM_REF
Access level: 3
Data type: Unsigned8 Dyn. index: DDS, p0180 Func. diagram: -
P-Group: Closed-loop control Unit group: - Unit selection: -
Not for motor type: SESM, REL Scaling: - Expert list: 1
Min Max Factory setting
- - 0000 0000 bin
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 -
04 Model changeover Time controlled Freq. controlled -
05 Closed-loop ctrl mode PMSM up to f=0Hz
with HF signal injection
Yes No -
06 Closed-/open-loop controlled when motor is
blocked
Yes No -
07 Use rugged changeover limits Yes No -
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