Removed from:
Servo inverter i950 FW: from V01.10.00
Behavior of the new version:
In the locked state of the inverter, the response of the speed control deviation monitoring is now (0x2D51:3) is suppressed so that no warning message is issued.
After the inverter is enabled, monitoring is active again.
Description of the behavior:
In the locked state of the inverter, the monitoring of the speed control deviation (0x2D51:3) on and a speed warning message is issued.
Note:
The described behavior does not occur when operating the i950 in the pure Lenze system.
Hbackground:
In the locked state of the inverter, all control loops continue to operate normally, with only the integral components of the controllers being kept at zero. Accordingly, the position controller also forms the associated control deviation (difference between setpoint and actual position) when the controller is disabled.
When the inverter is locked, the superordinate control the target position is equated with the actual position and thus the control deviation (tracking error) is kept to zero.
If the target position is not tracked in the higher-level controller, the on the position slider pending tracking errors to a speed setpoint.
At standstill (actual speed = zero), this results in a speed control deviation that can cause the associated monitoring to respond (0x2D51:3).
Under what conditions does the behavior occur?
- The inverter is locked and
- operating under a controller from another manufacturer and
- in the controller, the target position is not cyclically set equal to the actual position.
Affected products:
Servo-Inverter i950 FW
Short-term measures / Evaluation / Recommendations:
Possible remedy 1:
Ensure that the target position is set equal to the actual position on the higher-level control system when the inverter is locked.
Possible workaround 2:
Set the monitoring reaction under 0x2D51:3 to "no reaction".
[Automatic Translation]
