Controls
Controller Battery
Provides backup power to controller SRAM to retain programs and position data when the cabinet is powered off.
The controller battery, distinct from the encoder battery at the robot arm, keeps the SRAM inside the controller powered when the cabinet is unplugged or shut off overnight, preserving programs, position registers, and zero position data.
Manufacturers publish a service life for this battery, typically a few years, and recommend replacing it on schedule rather than reacting to a low battery alarm, since a battery that dies completely before replacement can erase stored data.
Replacement is usually done with the controller powered on so SRAM contents stay live during the swap.
Common questions
- What does the Controller Battery do?
- Provides backup power to controller SRAM to retain programs and position data when the cabinet is powered off.
- How does the Controller Battery fail?
- Common failure modes: Gradual voltage decline triggering a low battery warning, Complete discharge leading to loss of stored programs and mastering data, Corroded battery holder contacts, Battery replaced with main power off, erasing memory.
- What fault codes relate to the Controller Battery?
- Related codes include SYST, SRVO-063.