Simulation Mode - Siemens SINAMICS S120 Function Manual

Vector control

6.20 Simulation mode

6.20 Simulation mode
Requirement
● Initial commissioning must be complete (default: standard induction motors).
● The DC-link voltage must be less than 40 V (observe the tolerance of the DC-link voltage
sensing).
Function description
Simulation mode allows you to simulate the drive without a connected motor and without the
DC-link voltage. In this case, it should be noted that the simulation mode can only be activated
under an actual DC-link voltage of 40 V. If the voltage is higher, simulation mode is reset and
fault message F07826 is output.
With the simulation mode, you can test the communication with a higher-level controller. If the
drive is also to return actual values, note that it must be switched over to encoderless operation
during simulation mode. This means that large parts of the SINAMICS software (e.g. software
channel, sequence control, communications, technology function, etc.) can be tested in
advance without requiring a motor.
For units with outputs greater than 75 kW, it is recommended to test the activation of the power
semiconductors after repairs. To do so, a DC voltage of less than 40 V is applied to the DC link
and the possible pulse patterns must then be tested by the control software.
Note
Simulation mode cannot be activated without a power unit. A power unit must be connected via
DRIVE-CLiQ.
Features
● Automatic deactivation with a DC-link voltage greater than 40 V (measurement tolerance ±
4 V) with fault F07826 and immediate pulse inhibit (OFF2)
● Can be activated via parameter p1272
● Deactivation of line contactor activation during simulation mode
● Activation of power semiconductor with low DC-link voltage and with motor (for test
purposes).
● Power unit and closed-loop control can be simulated without a connected motor.
Activating the function
The simulation mode can be activated via p1272 = 1.
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Function Manual, 06/2019, 6SL3097-5AB00-0BP2
Drive functions