Omron Q2V Series - Page 641

Parameter Details
12
12.8 L: PROTECTION
SIEPCYEUOQ2V01A Q2V Technical Manual 641
Figure 12.114 KEB Function Wiring Example
■ Parameters for KEB Ride-Thru
This table shows the parameters that adjust the KEB Ride-Thru function. Parameter settings are different for the
different KEB methods set in L2-29 [KEB Method].
Table 12.50 Parameters for KEB Ride-Thru
No. Name Configuring Settings
L2-29 [Kinetic Energy Backup Method]
0 1 2 3
C1-09 Fast Stop Time • If ov [Overvoltage] occurs during KEB deceleration, increase the setting value.
• If Uv1 [DC Bus Undervoltage] occurs during KEB deceleration, decrease the
setting value.
x
*1
- - -
C2-03 Jerk@Start of Decel • If ov occurs immediately after you start KEB deceleration, increase the setting
value.
• If Uv1 occurs immediately after you start KEB deceleration, decrease the
setting value.
x - x x
L2-05 UV Detection Lvl (Uv1) If Uv1 occurs immediately after you start KEB deceleration, increase the setting
value to detect power loss more quickly.
x x x x
L2-06 KEB Decel Time • Kinetic Energy Backup Decel Time
• If ov or Uv1 occur during KEB deceleration after KEB Tuning, set L2-06 in
these conditions:
– If ov occurs, increase the setting value
– If Uv1 occurs, decrease the setting value.
- - x
*2
x
*2
L2-07 KEB Accel Time Sets the acceleration time to return to the frequency reference value before a
power loss, after you cancel the KEB operation. When L2-07 = 0, the drive uses
the standard acceleration times set in C1-01, C1-03, C1-05, and C1-07
[Acceleration Time].
x x x x
L2-08 Frq.Gain@KEB Start • If ov occurs immediately after you start operation, decrease the setting value.
• If Uv1 occurs immediately after you start operation, increase the setting value.
x - x x
L2-10 Minimum KEB Time • With KEB Ride-Thru
There is Uv1 because you set a digital input for KEB Ride-Thru and the device
that controls the input operated too slowly after power loss.
• Without KEB Ride-Thru
If the DC bus voltage overshoots immediately after KEB Ride-Thru starts,
increase L2-10 to longer than the overshoot.
x x x x
L2-11 KEB DC Volt Setpoint • Single Drive KEB Ride-Thru 2
Set to approximately 1.22 x input voltage.
• Single Drive KEB Ride-Thru 1, System KEB Ride-Thru 1, or System KEB
Ride-Thru 2
Set to approximately 1.4 x input voltage.
x x x x
L3-20 DCBus VoltAdj Gain • If ov or Uv1 occurs at the start of deceleration when you use KEB operation,
increase this value in 0.1-unit increments.
• If there is torque ripple during deceleration when you use KEB Ride-Thru,
decrease the value.
- x - -
L3-21 OVSup Acc/Dec Gain If there is large speed or current ripple, decrease the value in 0.05 unit increments.
Note:
If the setting value is too low, then the drive will have unsatisfactory DC bus
voltage control response. The drive can detect ov or Uv1.
- x - -