Fuji Electric Europe GmbH
Page 18 of 26
9.4
Auto Power Limit
Auto Power Limit function (APL) allows end user to adjust power consumed by the elevator, in other words
power consumed by the elevator will never reach a value higher than the one defined in a certain parameter.
When function is enabled, inverter will reduce elevators speed until reach (reduce) input power to the defined
value. Consequently, speed will depend on the load, so higher load means lower speed, and vice versa.
Speed
ON
FWD
X1 (SS1)
ON
ON
Time
ON
EN1, EN2
ON
E31
F07
F08
E11
E10
ON
When U29 Power is reached, and
speed is higher than E31, speed is
limited in order to not have an
undesired power consumption.
E14
E15
X3
Auto Power Limit
Soft start speed
High speed
Creep speed
Input Power
Time
U29
Figure 9: Speed and input power profile when APL is enabled
In order to have APL function activated, following conditions must be met:
•
X3= ON
•
Command speed > 10 Hz
•
Output frequency > E31
When one or more conditions are not met, APL function will be automatically disabled.
