Yaskawa VS-616G5 Series Revision F Programming Manual - Manual (Page 107)

VS-616G5 Programming Manual 107
Note: Enabling KEB ridethrough overrides the momentary power loss ride-through selection (L2-01).
L3 Stall Prevention/Current Limit
This function automatically adjusts the output frequency, acceleration and/or deceleration rates in
order to continue operation without tripping or “stalling” the inverter.
Enables/disables stall prevention/current limit during acceleration.
L3-01 Stall Prevention Selection During Acceleration StallP Accel Sel B B B −
Setting Description
0 Stall prevention/current limit during acceleration is disabled. The inverter increases
the output frequency at the set acceleration rate. If the acceleration rate is too fast for
the load condition, the inverter may trip on overcurrent (OC) or overload (OL).
1 Stall prevention/current limit during acceleration is enabled (factory default).
The acceleration rate is automatically reduced according to motor current to prevent
stalling during acceleration. The acceleration time may be longer than the set value
(C1-01)
.
2 Stall prevention/current limit during acceleration is enabled, with an intelligent accel-
eration mode. By monitoring motor current, the acceleration rate is automatically
adjusted so that acceleration can be completed in the shortest amount of time,
regardless of the set acceleration time.
Motor 1 Output
F1 (1 - ) Inverter 1
L2-06
100%
L2-02
Figure 51 KEB Ridethrough - Common DC Bus Applications
Frequency (F1)
Motor 2 Output
Frequency (F2)
Motor 3 Output
Frequency (F3)
F2 (1 - ) Inverter 2
L2-06
100%
F3 (1 - ) Inverter 3
L2-06
100%
0
KEB Ridethrough ON OFF OFF
Multi-function Input Contact
(H1-__ = “65” or “66”)
Section L: Protection Parameters
L3 Stall Prevention / Current Limit