11.9 L: PROTECTION
454 SIEPYEUOQ2A01A AC Drive Q2A Technical Manual
◆ L7: TORQUE LIMIT
No.
(Hex.)
Name Description
Default
(Range)
Ref.
L7-01
(04A7)
RUN
FW Torque Limit
Sets the torque limit value for forward motoring as a percentage, where motor rated
torque is the 100% value.
200%
(0 - 300%)
771
L7-02
(04A8)
RUN
RV Torque Limit
Sets the torque limit value for reversed motoring as a percentage, where motor rated
torque is the 100% value.
200%
(0 - 300%)
772
L7-03
(04A9)
RUN
FW Reg. TrqLimit
Sets the torque limit value for forward regenerative conditions as a percentage of the
motor rated torque.
200%
(0 - 300%)
772
L7-04
(04AA)
RUN
RV Reg. TrqLimit
Sets the torque limit value for reversed regenerative conditions as a percentage of the
motor rated torque.
200%
(0 - 300%)
772
L7-06
(04AC)
TrqLimit Integral Time
Sets the integral time constant for the torque limit function.
200 ms
(5 - 10000 ms)
772
L7-07
(04C9)
TrqLimit@Acc/Decel
Sets the torque limit function during acceleration and deceleration.
1 : P-ctrl@Ac/Dec
2 : I-ctrl@Ac/Dec
1
(1, 2)
773
L7-16
(044D)
TrqLimit@Start
Assigns a time filter to allow the torque limit to build at start.
0 : Disabled
1 : Enabled
1
(0, 1)
773
L7-35
(1B57)
Expert
LowF Reg.TrqLimit 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%)
773
L7-36
(1B58)
Expert
Reg.TrqLimit Derate
Freq
Sets the frequency width at which L7-35 [LowF Reg.TrqLimit Lvl] operates.
6.00 Hz
(0.00 - 30.00 Hz)
773
◆ L8: DRIVE PROTECTION
No.
(Hex.)
Name Description
Default
(Range)
Ref.
L8-01
(04AD)
3%ERF DBR 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)
774
L8-02
(04AE)
Overheat Alm Level
Sets the oH detection level.
Determined by o2-04
and C6-01
(50 - 150 °C)
774
L8-03
(04AF)
Overheat Pre-Alarm
Selection
Sets operation after the drive detects an oH alarm.
0 : Ramp->Stop
1 : Coast->Stop
2 : Fast Stop (C1-09)
3 : Alarm Only
4 : Run@L8-19 Rate
3
(0 - 4)
774
L8-05
(04B1)
In PhaseLoss Selection
Sets the function to enable and disable input phase loss detection.
0 : Disabled
1 : Enabled
1
(0, 1)
775
L8-07
(04B3)
Out PhaseLoss Selection
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 : 1PH Loss Det
2 : 2/3PH Loss Det
0
(0 - 2)
775
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