Description
The Omron E5AX‑A20 is a compact but full-featured ¼ DIN temperature controller, ideal for industrial and process applications.
Technical Specifications
| Condition |
New/Never Used Surplus |
| Brand |
Omron |
| Category |
|
| Part Number |
E5AX-A20 |
| Subcategory |
Temperature/Process Control |
| Range |
Standard Range
|
| Mounting Size |
1/4 DIN |
| Communication Type |
BCD Communications |
| Display (PV) |
4-digit LED
|
| Display (SV) |
4-digit LED
|
| Supply Voltage |
100–240 VAC
|
| Frequency |
50/60 Hz
|
| Power Consumption |
15 VA |
| Weight |
1.05 lbs
|
Information About E5AX-A20
The E5AX-A20 is a discontinued temperature controller from Omron, engineered for use in industrial process control and thermal regulation systems. It offers PID-based precision temperature management and supports modular I/O configurations via plug-in output units. While it is no longer in production, the E5AX-A20 remains widely available through surplus and refurbished industrial automation suppliers.
Key Features:
- Omron Engineered: Originally manufactured by Omron for factory automation and process control applications.
- Dual LED Display: Equipped with 4-digit LED screens for both process value (PV) and setpoint value (SV), providing real-time monitoring.
- PID Control: Utilizes auto-tuned Proportional-Integral-Derivative control algorithms for stable and responsive thermal regulation.
- BCD Communication: Supports binary-coded decimal (BCD) communication for integration with digital host systems.
- 1/4 DIN Mounting: Standard 48×48 mm housing ideal for panel-mount installations in compact or dense environments.
- Wide Power Range: Operates on 100–240 VAC at 50/60 Hz with 15 VA power consumption, ensuring compatibility across systems.
- Discontinued Model: Production ceased in 2003, but replacement units remain available in the aftermarket sector.
- Field Configurable: Supports multiple input types including thermocouples and RTDs, selected via DIP switch settings.
- Refurbished Availability: Commonly sold by industrial parts vendors in tested and warranty-covered condition.
- Legacy System Support: Frequently used to maintain or retrofit older process control setups dependent on Omron controllers.
The E5AX-A20 continues to provide reliable temperature regulation in legacy systems requiring standardized displays, modular I/O, and robust PID functionality. Its enduring utility makes it a practical solution for retrofit projects and legacy equipment maintenance.
