SRVO-219: Safety I/O brd fuse blown
A fuse on the additional Safe I/O board has blown; the message numbers which safe I/O device (see the DCS Safe I/O device menu).
What it means
A fuse on the additional Safe I/O board has blown; the message numbers which safe I/O device (see the DCS Safe I/O device menu).
Common causes
Ranked by what technicians most often find, most likely first.
- Blown fuse on the additional Safe I/O board - find the overload before replacing.
How to fix it
- Identify the device from the message number via the DCS Safe I/O menu.
- Safety-chain electrical work is a qualified-personnel task. With the controller de-energized and locked out, replace the fuse, or if it re-blows, replace the additional Safe I/O board per the maintenance manual.