Page
36
of
42
Fuji Electric Europe GmbH
13. Special operation
b. Alternative 2: Short floor with constant distance control
With this alternative the inverter keeps the deceleration distance (from high speed to creep speed) regardless
of the actual speed and acceleration. The needed S-curves are calculated to fulfil this condition.
High speed
Time
Speed
ON
ON
ON
ON
ON
Zero speed
Creep speed
Zero speed
active
Rated speed
active
Creep speed
active
Zero speed
active
L19: S-Curve 1
L28: S-Curve 10
L26: S-Curve 8
L25: S-Curve 7
L24: S-Curve 6
FWD
SS1
SS2
SS4
S
dec
E13: Acc./Dec.
time 6
E12: Acc./Dec.
time 5
High speed
Time
Speed
ON
ON
ON
ON
Zero speed
Creep speed
Zero speed
active
Rated speed
active
Creep speed
active
Zero speed
active
L19: S-Curve 1
L28: S-Curve 10
S-Curve will be calculated from
S
dec
FWD
SS1
SS2
SS4
S
dec
E13: Acc./Dec.
Time 6
E12: Acc./Dec.
Time 5
Figure 31. Short floor operation with constant distance control.
To use this alternative of short floor set bit 3 of function L99 to 1.
With this method functions L29 and L30 are not used.
This function is only available when accelerating from C04 to C09, C10 or C11, The inverter is
forced to decelerate to C07.
