System Rules - Siemens SINAMICS S120 Function Manual

13.12.2

System rules

A maximum of 24 drive objects (DOs) can be connected to one Control Unit.
Control Units
● The CU310-2 Control Unit is a single-axis control module for operating the AC/AC Power
Modules in the Blocksize (PM240-2 or PM340) and Chassis formats. Terminal Modules,
Sensor Modules and HUB Modules can also be connected in addition to these.
● The CU320-2 Control Unit is a multi-axis control module for operating Infeed Modules and
Motor Modules in Booksize, Chassis and Blocksize formats. Terminal Modules, Sensor
Modules and HUB Modules can also be connected in addition to these.
Motor Modules/control modes
For the CU310-2 Control Unit the following applies:
● The CU310-2 Control Unit is a single-axis control module (servo control, vector control or
vector control V/f control) plugged into a PM240-2 or PM340 Power Module, or for
operation with a maximum of one AC/AC Power Module in the Chassis format (via the
X100 DRIVE-CLiQ connection).
For the CU320-2 Control Unit the following applies:
● The CU320-2 Control Unit is a multi-axis control module for operating Motor Modules in
the Booksize, Chassis and Blocksize formats (PM240-2 and PM340 via CUA).
● For multi-axis modules, each axis counts individually (one Double Motor Module = two
Motor Modules).
● A maximum of 6 drive objects may be operated concurrently in servo control and HLA
control.
● There can be a maximum of 12 drive objects of the VECTOR type present concurrently.
– A maximum of 6 drive objects can be operated concurrently in vector control.
– A maximum of 12 drive objects can be operated concurrently with V/f control.
● Mixed operation of control types:
The following are permitted:
– Mixed operation of servo control and V/f control.
– Mixed operation of vector control and V/f control.
– Mixed operation of HLA and servo control.
– Mixed operation of HLA and vector control and V/f control.
The following are not permitted:
– Mixed operation of servo control and vector control.
– Mixed operation of HLA and servo control and V/f control.
Drive functions
Function Manual, 11/2017, 6SL3097-4AB00-0BP5
Basic information about the drive system
13.12 System rules, sampling times and DRIVE-CLiQ wiring
1005