Only with super-precision lifting
This section only applies to wire rope hoists with the option of super-precision lifting.
The super-precision lifting function is used for especially slow lifting and lowering with the hoist. This enables extremely exact positioning of the load. Super-precision lifting can be switched on and off at the transmitter or the pendant control.
Switching super-precision lifting on and off
Wait until the crane stops.
With pendant control: Switch
super-precision lifting on or off with the rotary switch.
With ABURemote: See the
ABURemote product manual.
● Wait about 2 seconds until the super-precision lifting function has switched on or off.
Lifting/lowering loads in super-precision mode
Operate the wire rope hoist as
usual.
● The wire rope hoist lifts/lowers very slowly and thus can be used to position the load with great precision.
Observe the duty cycle in
super-precision lifting! It amounts to 1/3 that of normal operation.
If the hoist motor normally has a duty cycle of 60%, the duty cycle in super-precision lifting is 20%. The hoist motor may then be run for a maximum of 2 minutes within a 10-minute period.