Note
Limitations of the output velocity (e.g. in the converter) can trigger a following error.
Cylinder and skew drive with TLS control
The following error monitoring system responds if the deviation between the current position
and the calculated set position is greater than the permitted value.
● Permitted deviation:
The permitted deviation can be set in the following parameters:
– P278 (cylinder)
– P336 (skew drive)
The following error is not monitored if the parameters are set to zero.
The following error messages are output if the permitted deviation is exceeded.
– E79 (cylinder)
– E73 (skew axis)
You can find additional information in the descriptions of the error messages E73 and E79; see
Chapter Error list TLS (Page 387).
Note
Limitations of the output velocity (e.g. in the converter) can trigger a following error.
10.2
Velocity monitoring
The velocities of the individual drives are monitored.
A velocity error occurs when the trolley (E50) or the hoist (E51) are not moving, are moving too
fast or in the wrong direction.
This error is triggered:
● If the output velocity is > 10% of the maximum velocity (P0, P40) and the crane does not
move or moves in the wrong direction.
● If the difference between the output velocity and the actual velocity is > 20% of the maximum
velocity (P0, P40) (e.g. defective drive).
The error appears with a delay of approx. 3 s. The error message is acknowledged when the
drive moves.
The causes of these errors can be:
● Defective encoder
● Faulty connection to the drive
● Brake is still closed
Alarm, error, and system messages
10.2 Velocity monitoring
SC integrated STS, GSU
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Operating Instructions, 07/2019, A5E48271265B AA