YASKAWA GA500 series - Page 365

Parameter Details
2
2.9 L: Protection Functions
YASKAWA TOEPYAIGA5002A GA500 Programming 365
Thru is input, although the time set in L2-10 [Minimum KEB Time] expired. The motor accelerates again after you
cancel the KEB Ride-Thru.
Figure 2.107 KEB Operation through KEB Ride-Thru Input
■ KEB Ride-Thru End Detection
Parameter L2-01 [Power Loss Ride Through Select] and a digital input programmed for KEB set the KEB function
end detection.
Use the Momentary Power Loss Ride-Thru Time to Cancel KEB Operation
shows an example with this configuration:
• L2-01 = 3 [Kinetic Energy Backup: L2-02] is set.
• KEB Ride-Thru is not used.
The drive starts deceleration through KEB operation. When the time set in L2-10 [Minimum KEB Time] expires, the
drive stops the KEB operation and then it accelerates the motor again until it is at the frequency reference value used
before the power loss.
If you do not return the DC bus voltage in the time set in L2-02 [Power Loss Ride Through Time], the drive detects
Uv1 [DC Bus Undervoltage] and the drive turns off its output.
Figure 2.108 Cancel the KEB Operation after the Momentary Power Loss Ride-Thru Time Is Expired without KEB Ride-
Thru
*1 When L2-07 = 0.00 [Kinetic Energy Backup Accel Time = 0.00 s], the drive accelerates again as specified by the
applicable Acceleration Time [C1-01, C1-03, C1-05, C1-07], and usual operation continues.
Use the Momentary Power Loss Ride-Thru Time and KEB Ride-Thru to Cancel KEB Operation
shows an example with this configuration:
• L2-01 = 3.