SIEPCYEUOQ2V01A Q2V Technical Manual
637
Note:
•
You can set this parameter when
C6-02 = B [Carrier Frequency Selection = Leakage Current Rejection PWM]
.
•
When the setting value increases, the current monitor also starts up slowly. Examine the relevant sequence for problems.
If errors occur in the values on the current monitor during acceleration/deceleration, increase the setting value.
◆
L2: POWER LOSS RIDE THROUGH
L2 parameters
set the drive operation during momentary power loss and the KEB Ride-Thru function method of
operation.
■
KEB Ride-Thru Function
KEB is an acronym for Kinetic Energy Backup. If the drive detects a power loss or momentary power loss, it will
quickly decelerate the motor. The drive uses regenerative energy from the motor to keep the main circuit
operating. When you return power during motor deceleration, the drive returns operation to the status before the
power loss. The KEB Ride-Thru function is different than other functions for continuous operation. If the drive
detects momentary power loss, the motor will ramp to stop. It will not coast to stop. This function is applicable for
applications in which it is necessary to prevent materials from running out, for example control for film and fiber
lines.
The KEB Ride-Thru function has 4 methods of operation. Parameter
L2-29 [KEB Method]
sets the method.
When you use the KEB Ride-Thru function with one drive, set
L2-29 = 1, 2 [Single KEB1 Ride-Thru, Single
KEB2 Ride-Thru]
.
If deceleration in coordination with more than one drive is necessary, for example textile machinery line systems,
set
L2-29 = 3, 4 [System KEB1 Ride-Thru, System KEB2 Ride-Thru]
.
Table 12.49 KEB Ride-Thru Function Operation Method
L2-29
Kinetic Energy
Backup Method
Operation
Configuration Precautions
0
Single Drive KEB
Ride-Thru 1
The drive uses regenerative energy from the motor to keep the DC bus
voltage at the level set in
L2-11 [KEB DC Volt Setpoint]
while it
adjusts the rate of deceleration.
The KEB operation continues while the drive adjusts the deceleration
rate with the setting of
C1-09 [Fast Stop Time]
.
•
Set C1-09 correctly to prevent
Uv1 [DC Bus Undervoltage]
and
ov
[Overvoltage]
.
•
If the drive detects
Uv1
during the KEB operation, decrease the
value set in
C1-09
.
•
If the drive detects
ov
during the KEB operation, increase the value
set in
C1-09
.
1
Single Drive KEB
Ride-Thru 2
The drive uses information about the inertia of the connected
machinery to find the deceleration rate necessary to keep the DC bus
voltage at the level set in parameter
L2-11
.
The drive uses system inertia to calculate the deceleration time. You
cannot adjust this value.
•
If the drive detects
Uv1
during the KEB operation, increase the
setting value of
L3-20 [DCBus VoltAdj Gain]
and
L3-21 [OVSup
Acc/Dec Gain]
.
•
If the drive detects
ov
during the KEB operation, decrease the
setting values of
L3-20
and
L3-21
.
2
System KEB Ride-
Thru 1
The drive does not monitor the DC bus voltage. The drive decelerates
at the KEB deceleration time set in
L2-06
.
Use
L2-06
to set the time necessary to decelerate from the current
frequency reference to 0 Hz. More than one drive can decelerate and
keep a constant speed ratio between drives.
Use the dynamic braking option with System KEB Ride-Thru 1.
3
System KEB Ride-
Thru 2
The drive uses the KEB deceleration time set in
L2-06
to decelerate
and it also monitors the DC bus voltage.
If the voltage level increases, the drive momentarily holds the
frequency to prevent an
ov
before it continues to decelerate.
If you cannot use the dynamic braking option, use System KEB Ride-
Thru 2.
■
KEB Ride Thru Start
When
L2-01 = 1 [RideThru@PwrLoss = Enabled]
and
L2-50 = 2, 3, 4 [KEB Mode, KEB Stop Mode, KEB Decel
to Stop]
, the drive starts the KEB operation immediately after it detects a momentary power loss. When one of
these conditions occur, the drive will activate KEB Ride-Thru:
•
KEB Ride-Thru 1 set for the MFDI terminal becomes enabled (terminal is deactivated when
H1-xx = 40
or
terminal is activated when
H1-xx = 41
).
The drive uses the mode selected
L2-29 [KEB Method]
to start KEB operation.
•
KEB Ride-Thru 2 set for the MFDI terminal becomes enabled (terminal is deactivated when
H1-xx = 42
or
terminal is activated when
H1-xx = 43
).
The drive automatically starts Single KEB Ride-Thru 2 and it ignores the setting of L2-29.
•
The DC bus voltage is less than the level set in
L2-05 [UV Detection Lvl (Uv1)]
.
The KEB operation will start as specified in
L2-29
.
Note:
If you try to set KEB Ride-Thru 1 and 2 to the MFDI terminals at the same time, it will trigger
oPE03 [Multi-Function Input Setting
Err]
.
Summary of Contents for Q2V Series
Page 2: ...This Page Intentionally Blank 2 SIEPCYEUOQ2V01A Q2V Technical Manual...
Page 12: ...12 SIEPCYEUOQ2V01A Q2V Technical Manual...
Page 18: ...i 2 Legal Information 18 SIEPCYEUOQ2V01A Q2V Technical Manual...
Page 26: ...1 2 Features and Advantages of Control Methods 26 SIEPCYEUOQ2V01A Q2V Technical Manual...
Page 38: ...2 8 Installation Methods 38 SIEPCYEUOQ2V01A Q2V Technical Manual...
Page 70: ...3 3 Main Circuit Wiring 70 SIEPCYEUOQ2V01A Q2V Technical Manual Models B006 B012...
Page 102: ...3 17 Motor Application Precautions 102 SIEPCYEUOQ2V01A Q2V Technical Manual...
Page 138: ...4 12 Test Run Checklist 138 SIEPCYEUOQ2V01A Q2V Technical Manual...
Page 144: ...5 2 European Standards 144 SIEPCYEUOQ2V01A Q2V Technical Manual...
Page 145: ...Standards Compliance 5 5 2 European Standards SIEPCYEUOQ2V01A Q2V Technical Manual 145...
Page 146: ...5 2 European Standards 146 SIEPCYEUOQ2V01A Q2V Technical Manual...
Page 266: ...7 10 Troubleshooting Without Fault Display 266 SIEPCYEUOQ2V01A Q2V Technical Manual...
Page 284: ...8 6 Storage Guidelines 284 SIEPCYEUOQ2V01A Q2V Technical Manual...
Page 312: ...10 10 Peripheral Devices and Options 312 SIEPCYEUOQ2V01A Q2V Technical Manual...
Page 430: ...11 21 Parameters Changed by PM Motor Code Selection 430 SIEPCYEUOQ2V01A Q2V Technical Manual...
Page 731: ...SIEPCYEUOQ2V01A Q2V Technical Manual 731 Z Z pulse Auto Tuning 125...
