The SEL-3505-3 Real-Time Automation Controller (RTAC) from Schweitzer Engineering Laboratories (SEL) adds connections for three digital outputs and eight digital inputs. The compact and economical SEL-3505-3 provides a fully programmable IEC 61131-3 logic engine with several built-in function blocks, including recently released PID functionality. The controller’s dimensions, 6.96 x 5.54 x 2.25 inches, make it ideal for cabinet or DIN rail mounting. It is designed for data concentration, protocol conversion and control applications.
Schweitzer Engineering Laboratories Inc.