Yaskawa VS-616PS5 Series Programming Manual - Manual (Page 83)

VS-616PS5 Programming Manual 83
L3 Stall Prevention/Current Limit
This function automatically adjusts the output deceleration rate in order to continue
operation without tripping (overvoltage avoidance function) when the motor is regen-
erating.
If deceleration times are set too short for load conditions, the inverter automatically
extends the deceleration time according to the main circuit DC bus voltage level.
When using an optional braking resistor for the VS-616PS5, set parameter L3-01 to
”0”.
L3-01 Over-voltage Protection (Stall Prevention During Deceleration) B
Setting Description
0 Stall prevention during deceleration is disabled. An excessively short deceleration time will
generate an overvoltage fault (OV), and the motor will coast.
1 Stall prevention during deceleration is enabled (factory default).
The DC bus voltage level is monitored, and the deceleration rate is automatically extended to
prevent an overvoltage condition. This deceleration time may be longer than the set value (C1-
02).
Figure 52 Stall Prevention During Deceleration
Speed
Set Deceleration Time
Time
Adjusts the deceleration time to
prevent overvoltage fault (OV).
Section L: Protection Parameters
L3 Stall Prevention/Current Limit