Cause : Brake IGBT - This alarm is only for multi-drive systems. It is equivalent to alarm 27, Brake chopper fault. The report value in the alarm log indicates which drive module generated the alarm.

This IGBT fault can be caused by any of the following:

• The DC fuse is blown.
• The brake jumper is not in position.
• The Klixon switch opened due to an overtemperature condition in the brake resistor
• The report value in the alarm log indicates which drive module generated the alarm: 1 = Left drive module. 2 = Second drive modulfrom left. 3 = Third drive module from left (in 4-module module systems). 4 = Fourth drive module from left (in 4-module module systems).