L7: Torque Limit - YASKAWA A1000 HHP Programming Manual

No.
(Addr. Name
Hex)
L6-08 Mechanical Weakening
(468) Detection Operation
L6-09 Mechanical Weakening
(469) Detection Speed Level
L6-10 Mechanical Weakening
(46A) Detection Time
L6-11 Mechanical Weakening
(46B) Detection Start Time
u

L7: Torque Limit

No.
(Addr. Name
Hex)
L7-01
Forward Torque Limit
(4A7)
L7-02
Reverse Torque Limit
(4A8)
L7-03 Forward Regenerative
(4A9) Torque Limit
L7-04 Reverse Regenerative
(4AA) Torque Limit
L7-06 Torque Limit Integral Time
(4AC) Constant
Torque Limit Control
L7-07
Method Selection during
(4C9)
Accel/Decel
YASKAWA ELECTRIC SIEP YEAHHP 01B YASKAWA AC Drive – A1000 HHP Programming Manual
Description
All Modes
This function can detect an overtorque or undertorque in a certain speed range
as a result of machine fatigue. It is triggered by a specified operation time and
uses the oL1 detection settings (L6-01 and L6-03).
0: Mechanical Weakening Detection disabled.
1: Continue running (alarm only). Detected when the speed (signed) is greater
than L6-09.
2: Continue running (alarm only). Detected when the speed (not signed) is
greater than L6-09.
3: Interrupt drive output (fault). Detected when the speed (signed) is greater
than L6-09.
4: Interrupt drive output (fault). Detected when the speed (not signed) is greater
than L6-09.
5: Continue running (alarm only). Detected when the speed (signed) is less
than L6-09.
6: Continue running (alarm only). Detected when the speed (not signed) is less
than L6-09.
7: Interrupt drive output (fault). Detected when the speed (signed) is less than
L6-09.
8: Interrupt drive output (fault). Detected when the speed (not signed) is less
than L6-09.
All Modes
Sets the speed that triggers Mechanical Weakening Detection. When L6-08 is
set for an unsigned value, the absolute value is used if the setting is negative.
All Modes
Sets the time mechanical weakening has to be detected before an alarm or fault
is triggered.
All Modes
Sets the operation time (U1-04) required before Mechanical Weakening
Detection is active.
Description
V/f V/f V/f w PG V/f w PG OLV OLV OLV OLV
OLV/PM OLV/PM AOLV/PM AOLV/PM AOLV/PM AOLV/PM CLV/PM CLV/PM CLV/PM CLV/PM
Sets the torque limit value as a percentage of the motor rated torque. Four
individual quadrants can be set.
Output Torque
L7-04
Regeneration
REV
L7-02
V/f V/f w PG OLV OLV
OLV/PM AOLV/PM CLV/PM
Sets the integral time constant for the torque limit.
V/f V/f w PG OLV OLV
OLV/PM AOLV/PM CLV/PM
0: Proportional control (changes to integral control at constant speed). Use this
setting when acceleration to the desired speed should take precedence over the
torque limit.
1: Integral control. Set L7-07 to 1 if the torque limit should take precedence.
A.10 L: Protection Function
CLV CLV CLV CLV
Positive Torque
L7-01
Motor
r/min
FWD
Regeneration
L7-03
Negative Torque
CLV
CLV
Values Page
Default: 0
150
Range: 0 to 8
Default: 110.0%
Min.: -110.0 150
Max.: 110.0
Default: 0.1 s
Min.: 0.0 151
Max.: 10.0
Default: 0 h
Min.: 0 151
Max.: 65535
Values Page
Default: 200%
Min.: 0 151
Max.: 300
Default: 200%
Min.: 0 151
Max.: 300
Default: 200%
Min.: 0 151
Max.: 300
Default: 200%
Min.: 0 151
Max.: 300
Default: 200 ms
Min: 5 152
Max: 10000
Default: 0
152
Range: 0, 1
287
A