YASKAWA V1000 Series Installation & Start-Up Manual page 393

No. Name
L7-01 Forward Torque Limit
L7-02 Reverse Torque Limit
Forward Regenerative
L7-03
Torque Limit
Reverse Regenerative
L7-04
Torque Limit
Torque Limit Integral
L7-06
Time Constant
Torque Limit Control
L7-07 Method Selection
during Accel/Decel
Internal Dynamic
Braking Resistor
L8-01
Protection Selection
(ERF type)
YASKAWA TM.V1000.01 V1000 Drive Installation & Start-Up Manual (Preliminary 01-19-07)
Description
L7: Torque Limit
Use L7 parameters to configure the torque limit function.
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
Sets the integral time constant for the torque
limit. When using integral control with the
torque limit, reducing this time will increase
the degree to which the frequency changes
based on torque limit.
Selects the method of torque limit control
during accel/decel.
0: Proportional Control (uses integral controls
at fixed speeds).
1: Integral Control
This parameter does not typically require
adjustment. For applications that require
torque limits during accel/decel, integral
controls (setting value = 1) are used when
torque controls take precedence. When torque
limit is applied to the motor, accel/decel time
may increase and motor speed may not run at
the commanded speed reference.
L8: Hardware Protection
Use L8 parameters to configure hardware protection functions.
Selects the DB protection only when using 3%
duty cycle heatsink mounted Yaskawa braking
resistor. This parameter does not enable or
disable the DB function of the drive.
0: Not provided
1: Provided
B.2 Parameter Table
Range Def.
0 to 300
0 to 300
positive torque
0 to 300
L7-01
motor
r/min
FWD
regeneration
0 to 300
L7-03
negative torque
5 to
10000
0, 1
Control
Mode
Addr.
O
V/ P
Hex
L
f M
V
200
− A − 4A7
%
200
− A − 4A8
%
200
− A − 4A9
%
200
− A − 4AA —
%
200
− A − 4AC —
ms
− A − 4C9
0
0,1 0 A A A 4AD —
Pg.
—
—
—
—
B
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