OMRON E5EK-PRR2-500 – Dual-Loop PID Process Controller | E5EK Series Platform
Engineering Background
The OMRON E5EK Series represents OMRON’s industrial-grade DIN rail process controller platform, engineered for precision closed-loop control in demanding manufacturing and process automation environments. Designed to IEC/JIS standards, the E5EK line has been deployed globally across semiconductor fabrication, food processing, plastics extrusion, and chemical process industries where tight temperature and process variable regulation is non-negotiable.
Product Positioning
The E5EK-PRR2-500 is a dual-loop relay output PID controller with a 100–240 VAC power supply, targeting OEM machine builders and process engineers who require reliable, configurable control with minimal panel footprint. Its 48×96mm DIN rail form factor and front-panel programming interface make it a drop-in solution for retrofit and new-build control panels alike. Konmask.com supplies verified OEM units with full traceability, serving procurement engineers who demand specification accuracy and supply chain confidence.
Complete Technical Specifications
| Parameter | Specification |
|---|---|
| Model Number | E5EK-PRR2-500 |
| Brand / Manufacturer | OMRON Corporation (Japan) |
| Series | E5EK |
| Controller Type | PID Process Controller (Dual Loop) |
| Output Type | Relay Output (PRR2 = 2× Relay) |
| Power Supply | 100–240 VAC, 50/60 Hz (500 suffix) |
| Power Consumption | Max. 10 VA |
| Input Types | Thermocouple (K, J, T, E, L, U, N, R, S, B, W), RTD (Pt100, JPt100), Analog (4–20 mA, 0–10 V, 0–5 V) |
| Control Method | PID / ON-OFF / Manual |
| Sampling Period | 500 ms |
| Display | 11-segment LED, 4-digit PV + 4-digit SV |
| Accuracy | ±0.1% FS (±1 digit) |
| Communication | RS-485 (CompoWay/F protocol, optional) |
| Alarm Outputs | 2 relay alarm outputs |
| Panel Cutout | 45×92 mm (DIN 48×96 mm) |
| Enclosure Rating | IP66 (front panel) |
| Operating Temperature | -10 to +55°C |
| Storage Temperature | -25 to +65°C |
| Humidity | 35–85% RH (non-condensing) |
| Weight | Approx. 280 g |
| Country of Origin | Japan |
| Certifications | CE, UL, cUL, KC |
Proven Application Environments
- Plastics & Rubber Processing: Extruder barrel zone temperature control with tight ±0.5°C setpoint adherence
- Food & Beverage: Pasteurization and sterilization tunnel control, compliant with hygienic panel requirements (IP66 front)
- Semiconductor & Electronics: Reflow oven and wave solder machine thermal profiling
- Chemical & Pharmaceutical: Reactor vessel temperature and pressure loop control with RS-485 SCADA integration
- HVAC & Building Automation: Chiller and boiler loop control in industrial facilities
- OEM Machine Building: Retrofit replacement for legacy single-loop controllers in DIN 48×96 cutouts
Engineering Advantages
- Dual Independent Control Loops: Two relay outputs allow simultaneous heating and cooling control from a single unit, reducing panel space and wiring complexity
- Universal Input Flexibility: Accepts thermocouple, RTD, and analog inputs without hardware changes — reconfigure via front panel or RS-485 command
- Auto-Tuning PID: One-touch AT function calculates optimal P, I, D parameters, reducing commissioning time significantly
- IP66 Front Panel: Splash-proof rating suitable for wash-down environments and food-grade installations
- RS-485 CompoWay/F: Native OMRON protocol enables seamless integration with OMRON PLCs (CP, CJ, CS series) and third-party SCADA via Modbus RTU adapter
- Wide Power Supply Range: 100–240 VAC universal input eliminates the need for separate power conditioning in global deployments
System Architecture & Signal Flow
The E5EK-PRR2-500 operates as a standalone closed-loop controller. The process variable (PV) signal enters via the universal analog input terminal block, is digitized at 500 ms intervals, and compared against the operator-set setpoint (SV). The PID algorithm computes the manipulated variable (MV), which drives the dual relay outputs (OUT1 / OUT2) for heating and cooling respectively. Alarm relay outputs (ALM1 / ALM2) trigger on configurable deviation, absolute high/low, or rate-of-change conditions. RS-485 port enables remote SV write, PV read, and parameter backup via host PLC or HMI. Front-panel LED display provides real-time PV/SV readout with engineering unit indication.
Sourcing & Quality Verification
- OEM Origin: All E5EK-PRR2-500 units sourced directly from OMRON authorized distribution channels — no gray-market or refurbished stock
- Traceability: Each unit ships with original OMRON packaging, date code label, and factory test documentation
- Pre-shipment Inspection: Power-on functional test performed; relay output continuity and display verified before dispatch
- Counterfeit Prevention: Holographic OMRON authenticity label verified; serial number cross-checked against OMRON production database where applicable
Procurement Process
- Confirm Specification: Verify input type, output configuration (PRR2 = dual relay), and power supply (500 = 100–240 VAC) match your application requirements
- Request Quote: Contact [email protected] for volume pricing, lead time, and availability confirmation
- Place Order: Submit PO via website checkout or email; proforma invoice issued within 1 business day
- Shipping: DHL / FedEx express worldwide; EXW Xiamen or DAP destination available; typical transit 3–7 business days
- Documentation: Commercial invoice, packing list, and OMRON datasheet provided with every shipment
Technical FAQ
Q: What is the difference between E5EK-PRR2-500 and E5EK-AA2-500?
A: The PRR2 suffix denotes dual relay control outputs; AA2 denotes dual voltage pulse (SSR drive) outputs. Select PRR2 for direct relay-switched loads; select AA2 when driving solid-state relays for high-cycle applications.
Q: Can the E5EK-PRR2-500 communicate with a Siemens S7 PLC?
A: Yes, via an RS-485 to Modbus RTU converter. The E5EK supports CompoWay/F natively; a protocol gateway (e.g., Anybus X-gateway) enables Modbus RTU or PROFIBUS DP integration.
Q: Is the unit suitable for 24 VDC panel power?
A: No. The -500 suffix specifies 100–240 VAC supply. For 24 VDC applications, specify the E5EK-PRR2-100 (24 VAC/VDC model).
Q: What thermocouple types are supported?
A: K, J, T, E, L, U, N, R, S, B, and W types are all supported via software selection — no hardware input module change required.
Q: What is the relay output contact rating?
A: 250 VAC, 3A resistive load (SPDT). For inductive loads, derate per OMRON E5EK instruction manual (Cat. No. H100).
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