The Omron E5AC-CX3ASM is a 1/4 DIN (96x96mm) digital temperature controller featuring a large white LCD display for clear visibility in industrial environments. It accepts universal sensor inputs including thermocouples (K, J, T, E, L, U, N, R, S, B, W) and platinum RTD (Pt100, JPt100). The CX3 suffix indicates a linear current output (4-20mA) as the main control output plus 3 auxiliary outputs for alarms or events. Operating on 100-240VAC supply, it features PID auto-tuning with advanced fuzzy logic for stable temperature regulation. The controller supports RS-485 Modbus communication for integration into SCADA and PLC systems. Typical applications include plastic injection molding barrel temperature control, industrial oven and furnace regulation, packaging machine heat sealing, extrusion line temperature management, environmental chamber control, and food processing temperature monitoring.
**Q: What does the model code E5AC-CX3ASM mean?**
A: E5AC = 96x96mm controller series. C = Current output. X3 = 3 auxiliary outputs. A = 100-240VAC supply. S = RS-485 communication. M = Screw terminal type (standard).
**Q: What sensors can the E5AC-CX3ASM accept?**
A: It accepts all major thermocouple types (K, J, T, E, L, U, N, R, S, B, W) and platinum RTDs (Pt100, JPt100) with automatic cold junction compensation for thermocouples and lead wire compensation for 3-wire RTDs.
**Q: How does the current output differ from relay output?**
A: The current output (4-20mA) provides smooth proportional control signal for driving SCR power controllers, proportional valves, or analog input motor drives. Relay output provides ON/OFF or time-proportional control for contactors and solenoid valves. Current output is preferred for precise heater control.
**Q: Can this controller communicate with a PLC?**
A: Yes, the "S" suffix indicates built-in RS-485 Modbus RTU communication, allowing direct parameter reading/writing and setpoint adjustment from PLCs, HMIs, or SCADA software via the Modbus protocol.
