(G) Control parameters
PARAMETERS
623
5
GROUP
G
NOTE
• During the regeneration avoidance operation, the stall prevention (overvoltage) (oL) is displayed and the overload alarm (OL)
signal is output. The operation when the OL signal is output can be set with Pr.156 Stall prevention operation selection.
The OL signal output timing can be set with Pr.157 OL signal output timer.
• The stall prevention is enabled even at the time of regeneration avoidance operation.
• The regeneration avoidance function cannot decrease the actual deceleration time for the motor to stop. The actual
deceleration time is determined by the regenerative power consumption performance, so to decrease the deceleration time,
consider using a regeneration unit (FR-BU2, BU, FR-BU, FR-CV, FR-HC2) or brake resistor (FR-ABR, etc.).
• When using regeneration unit (FR-BU2, BU, FR-BU, FR-CV, FR-HC2) or brake resistor (FR-ABR, etc.) to consume the
regenerative power, set to Pr.882 = "0 (initial value)" (disables regeneration avoidance function). When consuming the
regenerative power at the time of deceleration with the regeneration unit, etc., set to Pr.882 = "2" (enables regeneration
avoidance function only at the time of constant speed).
• When using the vector control and the regeneration avoidance function together, there may be a sound from the motor at the
time of deceleration. In such case, adjust the gain by performing easy gain tuning, etc. (Refer to page 192.)
Pr.1 Maximum frequency page 345
Pr.8 Deceleration time page 285
Pr.22 Stall prevention operation level page 348
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