Examples; Speed Setpoint Input And Evaluation Of The Speed Actual Value - Siemens SINAMICS S120 Commissioning Manual

Examples

4.1

Speed setpoint input and evaluation of the speed actual value

Introduction
The CANopen object Target Velocity is accessed using the PDO or SDO transfer.
As standard, the value is displayed in parameterr8796 (SINAMICS view) in the unit
increments/second.
Note
The parameter corresponds to the CANopen object 60FF hex + 800 hex * x (x: drive
number 0 ... 7).
The following parameters must be taken into account to enter the speed setpoint and
evaluate the speed actual value:
● p8798 = CBC speed conversion factor
● With encoder
Speed setpoint
● With encoder
CANopen interface
Commissioning Manual, (IH2), V2.6, 10/2008 Edition, 6SL3097-2AA00-0BP3
The parameter corresponds to the CANopen object 6094 hex.
The factor converts the required velocity units into the internal velocity units (U/s).
In the factory setting, for CANopen, the velocity units
– with encoder -> increments/second
– without encoder -> revolutions/minute
The internal velocity is calculated as follows:
– p0408 = pulse number
– p0418 = fine resolution
The value to be sent to the bus is calculated as follows:
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