Communication Via Sinamics Link; Basic Principles Of Sinamics Link - Siemens SINAMICS S120 Function Manual

Communication

11.6 Communication via SINAMICS Link

11.6 Communication via SINAMICS Link
11.6.1

Basic principles of SINAMICS Link

A drive unit (with a node number) most frequently comprises a Control Unit with a number of
connected drive objects (DOs). SINAMICS Link allows data to be directly exchanged
between up to 64 CU320-2 PN or CU320-2 DP Control Units or CUD. All of the participating
Control Units must be equipped with a CBE20 in order that SINAMICS Link functions.
Possible applications are, for example:
● Torque distribution for n drives
● Setpoint cascading for n drives
● Load distribution of drives coupled through a material web
● Master/slave function for infeed units
● Links between SINAMICS DC-MASTER and SINAMICS S120
Requirements
The following preconditions must be fulfilled to operate SINAMICS Link:
● One CBE20 must be inserted for each drive object.
● In the isochronous mode (p8812[0] = 1), the bus cycle time (p8812[1]) must be an integer
multiple of p0115[0] (current controller clock cycle).
● In the isochronous mode, the current controller cycle must be set to 125 µs, 250 µs, or
500 µs. One clock with 400 µs is not permitted. For 400 µs, alarm A01902[4] is output. As
countermeasure, set the current controller cycle with p0115[0] to 500 µs.
Note
The "SINAMICS Link" function is not available for the Control Unit CU310-2.
Note
SINAMICS Link for chassis format
For the following devices in the chassis format, you must set parameter p0115[0] to 250 μs
or 500 μs:
• 380 - 480 V 3-phase AC: All devices with rated current index ≥ 605 A
• 500 - 690 V 3-phase AC: All devices
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Function Manual, 11/2017, 6SL3097-4AB00-0BP5
Drive functions