YASKAWA L1000H Quick Start Manual page 26

5 Start Up
In case that the drive is running with a speed which is slower than nominal speed, the
sequence is slightly adapted, to ensure shortest possible run time with maximum comfort.
In case of Nominal Speed (no overload case), the drive starts deceleration to Leveling Speed
immediately when opening the speed selection input. In case that the drive runs with a
slower speed, the deceleration to Leveling Speed is delayed by a time, calculated automati-
cally by the drive. Refer to the figure below.
Intermediate / Inspection
Speed or overload case
Leveling Speed
Pump Leakage
Speed
Speed Selection
(Nominal, Intermediate
or Inspection)
Upward Run Command
Time
 Re-leveling RUN
Leveling Speed
Pump Leakage
Speed
Speed Selection
(Nominal, Intermediate
or Inspection)
Upward Run Command
Time
Travel Stop

The drive will cancel normal procedure in the following cases:
• The Run command is removed while the speed selecting input is still closed
> ramp to stop.
• The Run command is removed while the drive is decelerating to Leveling Speed
> SEQF fault shown and coast to stop (immediate power off).
• One of the digital inputs is set to "External Fault" (refer to parameter in section 6)
> stop as defined by the input.
EN 26
P6-01
P6-02
P6-01
P6-03
YASKAWA Europe TOEP C710606 91B AC Drive L1000H - Quick Start Guide
Automatic time delay
P6-07
P6-07