Liftket STAR LIFTKET VFD, Инструкция по эксплуатации, дополнительный лист

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Note:
Depending on the gearbox, the maximum possible lifting and lowering speeds are electronically
limited at 24 m/min.
Electric chain hoists with a nominal speed of more than 18 m/min at 50 Hz are decelerated be-
fore reaching the 90 Hz or 100 Hz mark.
3.3 Hold Speed Mode
In Hold Speed Mode, any other constant frequencies or speeds can be used in addition to the constant 50 Hz and 100 Hz
frequencies.
Lifting in Hold Speed Mode
Operation of button Lifting Function
Press on 1 st stage Lifting with minimum frequency according to A062
Pressing down to 2 nd stage Increasing the frequency or lifting speed as long as 2 nd stage is pressed
Change back from 2 nd stage to 1 st stage The current speed is held
Releasing the button Immediate stopping of the lifting movement without a ramp due to the brake being engaged
Table 7: Operation of button Lifting in Hold Speed Mode
Load measuring in Hold Speed Mode
When passing through the 50 Hz point, a load measurement takes place. The 50 Hz are "frozen" for about 300 ms. The
result of this load measurement determines the maximum frequency or maximum possible lifting speed:
Load Maximum frequency [Hz]
Full load 50
Without load 100
Partial load 50-100
Table 8: Maximum frequency and alteration rate when lifting in Hold Speed Mode
Note:
The load measurement at 50 Hz during the lifting process takes place only once if it has not
been stopped in the meantime.
Lowering in Hold Speed Mode
Operation of button Lowering Function
Press on 1 st stage Lowering with minimum frequency according to A062
Pressing down to 2 nd stage Increasing the frequency or lowering speed as long as 2 nd stage is pressed
Change back from 2 nd stage to 1 st stage The current speed is held
Releasing the button Immediate stopping of the lowering movement without a ramp due to the brake being en-
gaged
Table 9: Operation of button Lowering in Hold Speed Mode
The maximum lowering speed is regulated via the intermediate circuit voltage. When the limit value of the intermediate cir-
cuit voltage is reached, the frequency is not further increased during lowering. The larger the load, the sooner this point will
be reached.
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