YASKAWA OYMC V1000

1.8 L: Protection Functions
YASKAWA ELECTRIC SIEP C710606 10A YASKAWA AC Drive - V1000 PRELIM. Programming Manual 217
Parameter Details
1
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: Hardware 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).
Setting 0: Disabled
Disables the braking resistor protection. Use this setting for any braking option other than
the OYMC ERF Type resistor.
Setting 1: Enabled
Enables the protection for ERF type resistors.
■ L8-02: Overheat Alarm Level
Sets the 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 = 4) and the temperature reaches the overheat fault level, the drive will trigger an OH2
fault and stop the operation.
When an output terminal is set for the OH prealarm (H2-01/02/03 = 20), the switch will
close when the heatsink temperature rises above L8-02.
■ L8-03: Overheat Alarm Operation Selection
Sets the operation when an overheat alarm is detected
No. Name Setting Range Default
L8-01 Internal Braking Resistor Protection 0 or 1 0
No. Name Setting Range Default
L8-02 Overheat Alarm Level 50 to 130 °C
Depending on
size