Originally Posted by
fielder
1. The A16B-2201-0080 appears to have a capacitor on the board, so when removed from the rack, it should retain your SRAM memory for at least a half hour. Don't hold me to that, but in my experience, SRAM can last for a few hours. You should still take an SRAM backup beforehand if possible.
2. That depends. Do you see the JA4A connector, APC battery? If something is plugged in there, that provides battery voltage to the absolute pulse coders. If nothing is connected, my guess is you have decel switches and grid shift that determine your home position. In that case, you would simply need to move each axis one turn of the ball screw and then should be able to send every axis home. If there is something connected, best practice is to send all axes home if you can. That way when you lose the home positions, they're already where they need to be.
3. Look for B–62445E/03, there's a hardware section with total connection diagrams.