The official FANUC Robot Series R-30iB Controller Maintenance Manual (B-83175EN) is not a random PDF on the internet. It is a controlled document.
Warning regarding third-party websites: Many free manuals online are revisions from 2012. FANUC released critical updates in Revision 4.0 (2021) regarding lithium battery disposal and new E-stop board pinouts. Using an outdated manual can lead to miswiring and damage. fanuc robot series r 30ib controller maintenance manual
After any hardware replacement affecting the encoder or drive chain: Encoder reset for battery loss:
$MASTER_COUNT offset.Before any maintenance:
⚠️ The R-30iB servo drive retains lethal charge even with main power off due to bridge rectifier residual. The BLU(E) charge lamp on the drive unit must be OFF. or loss of warranty.
Warning: follow all site/local safety rules and Fanuc documentation. Work only when the robot is powered down and locked out unless procedures state otherwise. Incorrect maintenance can cause injury, equipment damage, or loss of warranty.