YASKAWA A1000 Series Technical Manual page 274

5.8 L: Protection Functions
Setting 0: Disabled
No alarm is detected.
Setting 1: Enabled
An alarm is triggered when the output current exceeds 150% of the drive rated current. A digital output set for an alarm
(H2- = 10) will close.
■ L8-55: Internal Braking Transistor Protection
Enables or disables protection for the internal braking transistor.
No.
L8-55
Setting 0: Disabled
Braking transistor protection should be disabled whenever the internal braking transistor is not used. This includes,
• when using a regen converter such as DC5.
• when using a regen unit such as RC5.
• when using external braking transistor options like CDBR units.
• when the drive is used in common DC bus applications and the internal braking chopper is not installed.
Enabling this L8-55 under such conditions can incorrectly trigger a braking transistor fault (rF).
Setting 1: Enabled
The following models come with a built-in braking transistor:
• CIMR-A 2A0004 to 0138
• CIMR-A 4A0002 to 0072
Enable L8-55 when connecting a braking resistor or a braking resistor unit to the drive built-in braking transistor.
274
Name
Internal Braking Transistor Protection
YASKAWA ELECTRIC SIEP C710616 27C YASKAWA AC Drive A1000 Technical Manual
Setting Range
0 or 1
Default
1