Parameter List
10
10.11 L: Protection Functions
YASKAWA ELECTRIC SIEP C710617 05F YASKAWA AC Drive GA700 Technical Manual 575
No.
(Hex.)
Name Description
Default
(Range)
Ref.
L7-04
(04AA)
RUN
Reverse
Regenerative Trq
Limit
Sets the torque limit value for reversed regenerative conditions as a
percentage of the motor rated torque.
200%
(0 - 300%)
976
L7-06
(04AC)
Torque Limit
Integral Time
Sets the integral time constant for the torque limit function.
200 ms
(5 - 10000 ms)
976
L7-07
(04C9)
Torque Limit
during Accel/Decel
Sets the torque limit function during acceleration and deceleration.
0 : Proportional only
1 : Proportional & Integral control
0
(0, 1)
976
L7-16
(044D)
Torque Limit
Process at Start
Assigns a time filter to allow the torque limit to build at start.
0 : Disabled
1 : Enabled
1
(0, 1)
977
L7-35
(1B57)
Expert
Low Freq Regen
Torque Limit Lvl
Sets the torque limit used during low-speed regeneration. Usually it
is not necessary to change this setting.
50.00%
(0.00 - 200.00%)
977
L7-36
(1B58)
Expert
Regen Torque
Limit Derate Freq
Sets the frequency width at which L7-35 [Low Freq Regen Torque
Limit Lvl] operates.
6.00 Hz
(0.00 - 30.00 Hz)
977
◆ L8: Hardware Protection
No.
(Hex.)
Name Description
Default
(Range)
Ref.
L8-01
(04AD)
3% ERF DB
Resistor Protection
Sets the function to enable braking resistor protection with a
Yaskawa ERF series braking resistor (3% ED) installed on the
heatsink.
0 : Disabled
1 : Enabled
0
(0, 1)
978
L8-02
(04AE)
Overheat Alarm
Level
Sets the oH detection level.
Determined by o2-
04 and C6-01
(50 - 150 °C)
978
L8-03
(04AF)
Overheat Pre-
Alarm Selection
Sets operation after the drive detects an oH alarm.
0 : Ramp to Stop
1 : Coast to Stop
2 : Fast Stop (Use C1-09)
3 : Alarm Only
4 : Operate at Reduced Speed (L8-19)
3
(0 - 4)
978
L8-05
(04B1)
Input Phase Loss
Protection Sel
Sets the function to enable and disable input phase loss detection.
0 : Disabled
1 : Enabled
1
(0, 1)
979
L8-07
(04B3)
Output Phase Loss
Protection Sel
Sets the function to enable and disable output phase loss detection.
The drive starts output phase loss detection when the output current
decreases to less than 5% of the drive rated current.
Note:
The drive can incorrectly start output phase loss detection in
these conditions:
• The motor rated current is very small compared to the drive
rating.
• The drive is operating a PM motor with a small load.
0 : Disabled
1 : Fault when one phase is lost
2 : Fault when two phases are lost
0
(0 - 2)
979
To Next Page
Loading...
