Siemens SINAMICS DCM Manual page 392

NSET_B (speed setpoint B (32-bit))
● Speed setpoint with a 32-bit resolution with sign bit.
● Bit 31 determines the sign of the setpoint:
– Bit = 0 → Positive setpoint
– Bit = 1 → Negative setpoint
● The speed is normalized via p2000.
NSET_B = 4000 0000 hex or 1 073 741 824 dec ≐ speed in p2000
Figure 10-3
Note
Operation of motors in the field-weakening range
If the motors are to be operated in the field-weakening range > 2:1, the value of parameter
p2000 must be set ≤ 1/2 x maximum speed of the drive object.
Gn_STW (encoder n control word)
This process data belongs to the encoder interface.
A_DIGITAL
CU_STW1
This process data is part of the central process data.
10.3.2.3 Description of status words and actual values
Note
The reference parameter is also specified for the relevant process data. The process data is
generally normalized in accordance with parameters p2000 to r2004.
The following scalings apply:
• A temperature of 100° C corresponds to 100%
• An electrical angle of 90° also corresponds to 100%.
SINAMICS DCM DC Converter
Operating Instructions, 02.2015, A5E34763375/RS-AA/001
Normalization of speed
ac.maher.co.ir
Descriptions of functions
10.3 Communication according to PROFIdrive
393