Yaskawa AC Drive-P1000 Industrial Fan - Manual (Page 243)

L2-11 (Desired DC Bus Voltage)
DC bus voltage
KEB Digital Input
Main Power Supply
Output Frequency
L2-05 (Uv Detection Level)
0 Hz
0 V
0 V
KEB deceleration is
triggered by DC bus voltage
KEB restart after
L2-02 has passed
Power Loss
Power loss longer than L2-10 Power loss shorter than L2-10
L2-10 (Minimum KEB
Operation Time)
L2-11 (Desired DC Bus Voltage)
L2-05 (Uv Detection Level)
0 Hz
0 V
0 V
KEB deceleration is
triggered by DC bus voltage
KEB restart after
L2-02 has passed
Power Loss
L2-10 (Min.
KEB
Operation
Time)
Figure 5.75 KEB Operation Using L2-10 and KEB Input
L2-01 = 5
KEB operation ends when the motor has come to a stop, even if the power returns and the digital input terminal that initiated
KEB Ride-Thru is cleared.
n KEB Operation Wiring Example
Figure 5.76 shows a wiring example to trigger the KEB Ride-Thru at power loss using an undervoltage relay. When a power
loss occurs, the undervoltage relay triggers KEB Ride-Thru at terminal S6 (H1-06 = 65, 66, 7A, 7B). Note that using System
KEB Ride-Thru requires an additional dynamic braking option.
Note: 1. Do not switch off the Run command during momentary power loss. If the Run command is shut off, the drive will not accelerate back
to speed when the power is restored.
2. A dynamic braking option is required to use System KEB 1 (L2-29 = 2).
M
R/L1
S/L2
T/L3
U/T1
V/T2
W/T3
B1 B2
L1
L2
L3
Braking
Resistor
UV Detection
Relay
S6 - KEB command 1 or 2
S1 - Start command
SC
Required for System KEB
Ride-Thru 1 only (L2-29 = 2)
Figure 5.76 KEB Function Wiring Example
n Parameters for KEB Ride-Thru
Table 5.35 lists parameters needed to set up KEB Ride-Thru depending on the type of KEB Ride-Thru selected in L2-29.
5.8 L: Protection Functions
YASKAWA SIEP YAIP1U 01B AC Drive - P1000 Technical Manual 243
5
Parameter Details