L7: Torque Limit - YASKAWA V1000 Series Installation & Start-Up Manual

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)
Overheat Alarm
L8-02
Level
YASKAWA ELECTRIC TOEP C710606 09B YASKAWA AC Drive V1000 Installation & Start-Up Manual
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.
Selects the method of torque limit control
during accel/decel.
0: Proportional Control (change to integral
controls at fixed speeds). Use this setting when
acceleration to the desired speed has priority
over torque limitation.
1: Integral Control. Use this setting if the
torque limitation has priority.
When torque limit is applied to the motor,
accel/decel time may increase and motor speed
may not meet the speed reference.
L8: Hardware Protection
Use L8 parameters to configure hardware protection functions.
Selects the Braking resistor when using a 3%
duty cycle heatsink mounted Yaskawa braking
resistor. This parameter does not enable or
disable the braking transistor of the drive.
0: Resistor overheat protection disabled
1: Resistor overheat protection enabled
When the heatsink temperature exceeds the
value set in this parameter, an Overheat Alarm
(OH) will occur.
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
50 to
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, 1 0
0,1 0 A A A 4AD —
A A A 4AE
<12>
130
Pg.
—
—
—
—
B
—
359