120 W at 24 VDC — the panel power bus decision
The Omron S8VS-12024A-F is a 120 W switch-mode power supply delivering a regulated 24 VDC output through screw terminal connections. This is the unit that powers the control bus — PLCs, I/O racks, relays, and indicators — not the motor drives. At 120 W, it delivers 5 A continuous at 24 VDC, which is the figure to check against your panel's total 24 V load current.
Screw terminal vs the alternatives
The S8VS-12024A-F terminates with screw terminals — a deliberate choice over push-in or spring-cage connectors. In a panel where the wiring is done by technicians who prefer a screwdriver over a ferrule crimper, this saves time. The 120 W rating sits between the smaller S8VS-09024S (90 W) and the larger S8VS-48024 (480 W) in the same series, all sharing the same 24 VDC output and screw-terminal interface.