Parameter Details
12
12.9 L: Protection Functions
YASKAWA SIEPC71061753C GA500 Technical Manual 701
function to continue to decelerate. When you cancel the KEB Ride-Thru, the motor accelerates again, and usual
operation continues.
Figure 12.116 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
*1 When L2-07 = 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.
KEB Operation when L2-01 = 5 [Kinetic Energy Backup: DecelStop]
The drive starts deceleration through KEB operation. If you do not input the Run command, the motor cannot
restart. 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.
■ KEB Operation Wiring Example
Figure 12.117 shows an example that uses an undervoltage relay to trigger the KEB Ride-Thru at power loss.
When a power loss occurs, the undervoltage relay triggers KEB Ride-Thru [H1-06 = 65, 66, 7A, 7B] at terminal
S6.
Note:
• Set the drive to activate the Run command while the KEB function is operating. If you turn off the Run command, the drive will not
accelerate back to speed when you return power.
• When you set L2-29 = 2 [Kinetic Energy Backup Method = System KEB Ride-Thru 1], install a dynamic braking option.
Figure 12.117 KEB Function Wiring Example
■ Parameters for KEB Ride-Thru
Table 12.67 shows the parameters that adjust the KEB Ride-Thru function. Parameter settings are different for the
different KEB methods set in L2-29 [KEB Energy Backup Method].
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