Omron Q2A Series Technical Manual page 746

12.8 L: PROTECTION
Figure 12.123 Cancel KEB Operation without Using the KEB Ride-Thru if Restoration of Power Occurs while the
*1 When setting L2-07 = 0.00, the drive reaccelerates in accordance with the valid Acceleration Time [C1-01,
C1-03, C1-05, C1-07], and normal operation resumes.
Use the KEB Ride-Thru to Cancel KEB Operation when Restoration of Power Occurs while the Control
Power (Power Supply to the Control Board) is Maintained
Figure 12.124 shows an example with this configuration:
• L2-01 = 4.
• Use KEB Ride-Thru 1 [H1-xx = 40, 41] or KEB Ride-Thru 2 [H1-xx = 42, 43].
The drive starts deceleration through KEB operation. When the motor decelerates for the time set in L2-10, the
drive measures the DC bus voltage and the status of the digital input set for KEB Ride-Thru. When the DC bus
voltage is less than the level set in L2-11, or if the digital input set to KEB Ride-Thru is active, deceleration
continues. When the voltage level is more than the value set to L2-11, usual operation continues. The drive
accelerates the motor to the frequency reference value before the power loss, and usual operation continues. When
the KEB Ride-Thru continues to be input after the time set in L2-02 is expired, the drive uses the KEB Ride-Thru
function to continue to decelerate. When you cancel the KEB Ride-Thru, the motor accelerates again, and usual
operation continues.
Figure 12.124 Use the KEB Ride-Thru to Cancel KEB Operation when Restoration of Power Occurs while the Control
*1 When L2-07 = 0.00, the drive accelerates again as specified by the applicable Acceleration Time [C1-01, C1-
03, C1-05, C1-07], and usual operation continues.
KEB Operation when L2-01 = 5 [Kinetic Energy Backup: DecelStop]
The drive starts deceleration through KEB operation. The drive will continue to decelerate until the motor comes
to the minimum output frequency or a complete stop. If you return power during deceleration, the drive continues
to decelerate. If you do not input the Run command, the motor cannot restart.
746
Control Power (Power Supply to the Control Board) is Maintained
Power (Power Supply to the Control Board) is Maintained
SIEPYEUOQ2A01A AC Drive Q2A Technical Manual