Notes On The Number Of Controllable Drives; Introduction; Number Of Controllable Drives - Siemens SINAMICS S120 Function Manual

Basic information about the drive system

12.12 Notes on the number of controllable drives

12.12 Notes on the number of controllable drives
12.12.1

Introduction

The number and type of controlled drives and the extra activated functions on a Control Unit
can be scaled by configuring the firmware. The maximum possible functionality depends on
the computing power of the Control Unit used and may be checked in each case using the
SIZER projecting tool.
12.12.2

Number of controllable drives

The following specifications provide a rough guide to the potential drive numbers for each
Control Unit CU320 as a function of the current and speed controller clock cycles and the
sampling times of the frequency/voltage channels with vector V/f control.
Note
The following information is valid for power units of booksize and chassis format.
The maximum number of drives is reduced by one in each case when blocksize power units
are used.
Servo control
● Servo without extra function modules (e.g. setpoint channel):
● Servo without extra function modules (e.g. setpoint channel):
626
PROFIBUS-DP cycle >=1 ms
– 6 drives (sampling times: current controller 125 µs / speed controller 125 µs), of which
max. 2 induction motors or
2 drives (sampling times: current controller 62.5 µs / speed controller 62.5 µs), both
also induction motors
– 5 drives, all induction motors (sampling times: current controller 125 µs / speed
controller 125 µs)
– 6/5 motor measurement systems (with 6 drives/with 5 drives)
– 3 direct measuring systems
– 1 Terminal Module TM31 or 1 Terminal Board TB30 with 1 ms sampling time
– 1 Active Line Module with 250 µs sampling time without Voltage Sensing Module
PROFIBUS DP cycle >= 500 µs and < 1 ms, valid for integrated SINAMICS drives for
SIMOTION and SINUMERIK
– 5 drives (sampling times: current controller 125 µs / speed controller 125 µs), of which
max. 2 induction motors or
2 drives (sampling times: current controller 62.5 µs / speed controller 62.5 µs), both
also induction motors
– Remaining modules as above
Function Manual, (FH1), 10/2008, 6SL3097-2AB00-0BP5
Drive functions