Which products are affected?
8200vector (SW 3.5), 8200motec (SW 3.5)
What happens?
When activating the 'Parameter set changeover' function (DCTRL1-PAR2/4 or DCTRL1-PAR3/4) the control program is skipped for 20 ms before the parameter set changeover is executed. By skipping the control program the setpoint processing with the ramp function generator etc., the oscillation damping and the internal control (V/f characteristic control, vector control) is not called up for 20 ms (values are 'frozen').
In case of dynamical applications this may lead to an activation of the overvoltage message.
When does the problem occur?
The problem occurs in case of dynamical applications if the 'Parameter set changeover' function (DCTRL1-PAR2/4 or DCTRL1-PAR3/4) is activated.
Possible diagnostics?
Evaluate the status word before and during the parameter set changeover. Regarding this, check if a message is active.
Short-term measures/recommendations?
None.
Evaluation:
In case of dynamical applications this behaviour may lead to an activation of the overvoltage message. It cannot be deactivated in the device software that the control program is skipped for 20 ms.
