Test movement in manual mode: The correct polling required for synchronous motors is not monitored (corrected from V01.08.00)

Corrected from:

Servo-Inverter i950 FW: from V01.08.00

Response of the new version:

When executing the manual test mode "Position" (0x2825 = 17) and in the PRBS test modes 0x2825 = 11, 13 and 14, the pollage is monitored. If there is no valid polling when the controller is enabled, an error is triggered in these test modes.

What happens?

Commissioning function 'Test movement' in manual mode:

The correct polling required for synchronous motors is not monitored by the unit under the above conditions.

Accordingly, if the pollage information is incorrect, the execution of a movement in servo control (test movement) is not prevented.

When does the behaviour occur?

Synchronous motor (SM) and
Use of the commissioning function 'test movement', e.g. via engineering tool and the hand symbol button.

Which products are affected?

Servo inverter i950 FW

Short-term measures / evaluation / recommendations:

Before using the commissioning function 'test movement', make absolutely sure that the pollage information is correct.

If necessary, first carry out the commissioning function Pollage identification to ensure that the synchronous motor can be operated correctly.

A synchronous motor cannot produce its full torque if the polling information is incorrect or, in the worst case, it can even rev up uncontrollably.

With linear motors, incorrect polling information has a particularly unfavourable effect because of the mostly high possible dynamics of the system.

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