Section 4:
Once the velocity of the trolley is less than the "on-the-fly unloading abort velocity" (P30), the
status bit "OPEN_GRAB" will be reset. A new target (ship) must be specified. This is to be done
using status bit "CHANGE_TARGET". The grab can remain open until it is placed down. The
control bit "FLYING" must now be reset.
6.27.2.2 Activating on-the-fly unloading
To be able to activate on-the-fly unloading, the following conditions must be met:
● The specified target must be on the landside.
● POS mode must be selected for the trolley and either POS or MAN mode for the hoist, or
SAM mode for both drives.
● The time-optimized control is activated in P152.
● The FLYING control bit (STW1_PLC_Trolley) must also be set.
● The output velocity of the trolley is greater than the "on-the-fly unloading abort velocity"
(P30)
● P30 and P31 must be set as follows:
– As soon as the distance between the load position and the target position of the trolley
is smaller than P31, the OPEN_GRAB status bit is set.
– P30 is used to set the time for resetting the OPEN_GRAB status bit and therefore
provides the time for setting the CHANGE_TARGET status bit.
– The CHANGE_TARGET status bit is reset automatically the instant that the user resets
the TRAVEL control bit.
– Recommendation: P30 ≤ 10% of maximum velocity
Note
No prelimit switch function may be active during on-the-fly unloading. If this cannot be avoided,
the on-the-fly unloading operation must be aborted by resetting the FLYING control bit.
Note
The best results are achieved with time-optimized control and on-the-fly unloading with
constant angle.
Sway Control function description
6.27 Special aspects of GSU applications
SC integrated STS, GSU
232 Operating Instructions, 07/2019, A5E48271265B AA
To Next Page
Loading...