Basic Principles Of Sinamics Link - Siemens SINAMICS S120 Series Function Manual

Communication via SINAMICS Link
8.1

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 sampling time).
● In the isochronous mode, the current controller sampling time must be set to 125 µs,
250 µs or 500 µs. A sampling time with 400 µs is not permitted. For 400 µs, alarm
A01902[4] is output. As countermeasure, set the current controller sampling time 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
Communication
Function Manual, 12/2018, 6SL3097-5BD00-0BP0
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