Parameters
List of Parameters
1-204
© Siemens AG 2009 All Rights Reserved
SINAMICS G120 Control Units CU230P-2 Parameter Manual (LH9), 11/2009
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, encoderless vector control remains speed-controlled (ASM).
Caution:
Do not use bit 6 = 1 if the motor can be reversed by the load. Long wait times due to blocking (p2177) 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).
Note:
Bits 0 ... 2 only have an influence for encoderless vector control, bit 2 is pre-assigned in accordance with p0500.
Re 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 gener-
ate any active torque and therefore only acts reactively to the drive torque of the induction motor.
If bit 2 is set to 1, then bit 3 is also automatically activated. Manual deselection is possible and can make sense if,
for third-party motors, the saturation characteristic (p1960) was not carried out. Generally, for standard SIEMENS
motors, the already pre-assigned (default value) saturation characteristic is adequate.
For bit 2 = 1, the selection of bits 0 and 1 is ignored.
Re bit 2 = 0:
Bit 3 is deactivated automatically.
Re bit 6 = 1:
The following applies for encoderless vector control of induction motors only: If the motor is blocked (see p2175,
p2177), the time condition p1758 is bypassed and there is no changeover to open-loop control.
p1750[0...n]
Motor model configuration / MotMod config
PM240
PM250, PM260
Access level:
3
Calculated:
p0340 = 1,3,5
Data type:
Unsigned8
Can be changed:
U, T
Scaling:
-
Data set:
DDS, p0180
Min Max Factory
setting
- - 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
-
06
Closed-loop control when motor is blocked
Yes
No
-
Summary of Contents for CU230P-2 CAN
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