2 System Configuration
2
05.01
2.6 Control modules
2-35
Siemens AG 2001 All rights reserved
SIMODRIVE 611 Planning Guide (PJU) – 05.01 Edition
2.6.7 Control modules with analog setpoint interface for induction
motors
The induction motor control modules are designed for the open–loop speed
control of standard induction motors or special induction motors for high speeds
up to 32000 RPM. The maximum electrical base frequency for the motor is
1100 Hz.
In the frequency range greater than 10 Hz, a field–oriented control algorithm is
used due to the actual value being emulated from the terminal quantities. This
results in high dynamic response characteristics and high immunity against
stalling.
A display and operator unit is integrated in the control modules for
commissioning. Furthermore, commissioning software which can run under
MS–DOS, is also available.
2.6.8 Control modules with digital setpoint interface for FD and MSD
The digital control modules of SIMODRIVE 611, in conjunction with SIMODRIVE
1FT6/1FK6 AC servomotors and 1FN linear motors, can be used for feed
drives, and in conjunction with 1PH/1FE1 motors, for main spindle drives.
The control modules evaluate the incremental sin/cos 1Vpp encoders integrated
in the 1FT6/1FK6 or 1PH motor.
This means, that up to 4.2 million increments/motor revolutions can be achieved
as measuring circuit resolution. For 1FN motors, an incremental or an absolute–
coded measuring system with EnDat interface is required to sense the position,
velocity actual value and pole position.
The generated signals for velocity and position actual value are processed via
the digital drive bus in the servo area of the SINUMERIK. For control modules
with the ”direct position sensing” function, a direct measuring system (DMS) can
also be connected. This means that incremental encoders with sine/cosine vol-
tage signals can be evaluated.
The control modules with digital setpoint interface can be used, from the hard-
ware perspective, as feed or main spindle drive in the 1–axis version Perfor-
mance control universal. The software with the control algorithms is saved in the
SINUMERIK 810D/840D/840C. Each time that the drive control (open–loop) is
powered–up, the software is downloaded into the digital control modules. When
commissioning the system, the drive configuration is used to define whether it
involves a feed or main spindle drive.
For control modules with digital setpoint interface, either the standard control or
the Performance control can be selected. Both of these versions utilize the
same drive interfaces and a firmware with the same control algorithms.
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