L8: Drive Protection - YASKAWA T1000V Technical Manual

5.8 L: Protection Functions
L7-07: Torque Limit Control Method Selection during Accel/Decel
■
Selects the function of torque limit during acceleration and deceleration.
No.
Torque Limit Control Method Selection during Acceleration/
L7-07
Setting 0: Proportional Control
The torque limit function works with P-control during acceleration and deceleration and switches to I-control at constant
speed. Use this setting when acceleration or deceleration to the desired speed has priority over torque limitation during
speed changes.
Setting 1: Integral Control
The torque limit function always uses I-control. Use this setting when high accuracy torque limitation is required even
during speed changes. Using this function may increase the acceleration time, or may prevent the motor speed from
reaching the frequency reference when the torque limit is reached before.

◆ L8: Drive Protection

L8-01: Internal Dynamic Braking Resistor Protection Selection (ERF type)
■
This parameter selects the dynamic braking resistor protection when using an optional heatsink mounted braking resistor
(ERF type, 3% ED).
No.
Internal Dynamic Braking Resistor Protection Selection
L8-01
Setting 0: Disabled
Disables the braking resistor protection. Use this setting for any braking option other than the Yaskawa ERF Type
resistor.
Setting 1: Enabled
Enables the protection for ERF type resistors.
L8-02: Overheat Alarm Level
■
Sets the heatsink overheat alarm (oH) detection level.
The drive will output an alarm when the heatsink temperature exceeds the alarm level set in parameter L8-02. If the
operation when this alarm occurs is set for continued operation (L8-03 = 3) and the temperature reaches the overheat
fault level, the drive will trigger an oH1 fault and stop the operation.
When an output terminal is set for the oH pre-alarm (H2-01, H2-02, H2-03 = 20), the switch will close when the heatsink
temperature rises above L8-02.
No.
L8-02
200
Name
Deceleration
Name
(ERF type)
Name
Overheat Alarm Level
YASKAWA ELECTRIC SIEP C710606 44B YASKAWA AC Drive T1000V Technical Manual
Setting Range
0 or 1
Setting Range
0 or 1
Setting Range
Determined by
50 to 130 °C
Default
0
Default
0
Default
o2-04