This controller unit manages logic execution and analog signal processing for distributed control systems. It interfaces directly with field sensors and actuators through multiple I/O channels. The device handles both discrete and continuous control tasks with high precision.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model Number | PFRA101 3BSE003911R115 |
| Product Type | Controller Unit |
| Supply Voltage | 24 V DC ±20% |
| Power Consumption | 8 W (typical) |
| Analog Inputs | 4 x 0–10 V DC / 0–20 mA (configurable) |
| Analog Outputs | 2 x 0–10 V DC / 4–20 mA |
| Digital Inputs | 8 x 24 V DC (sink/source) |
| Digital Outputs | 4 x 24 V DC, 0.5 A per channel |
| Communication Ports | 1 x RS-485 (Modbus RTU) |
| Processing Speed | 20 ms scan cycle (typical) |
| Mounting | DIN rail (EN 50022) |
| Dimensions (W x H x D) | 70 mm x 120 mm x 75 mm |
| Weight | 0.38 kg |
Mechanical Design and Installation
This controller features a compact 70 mm wide housing for space-constrained panels. Its DIN-rail mounting system allows for rapid deployment and effortless repositioning. The unit weighs just 0.38 kilograms, which reduces strain on the mounting rail. All terminal blocks are front-facing for convenient wiring access.
Power Supply and Electrical Characteristics
The device accepts a 24 V DC supply with a generous ±20% tolerance. It consumes only 8 watts during normal operation, ensuring low heat dissipation. This efficiency allows for dense panel mounting without overheating concerns. The built-in reverse polarity protection safeguards the internal circuitry from incorrect connections.
Input and Output Configuration
This controller provides eight digital inputs for discrete sensor signals. It also includes four analog inputs for process variables like pressure or temperature. The unit delivers two analog outputs for modulating final control elements. Four digital outputs supply 0.5 amperes each for driving relays or small actuators. All I/O channels feature optical isolation for enhanced noise rejection.
Communication and Data Handling
An integrated RS-485 port supports Modbus RTU protocol for master-slave networking. This serial interface enables data exchange with HMIs, drives, and other controllers. The device stores configuration parameters in non-volatile flash memory. This memory retains settings even after a complete power loss.
Energy Storage and Operational Continuity
An internal supercapacitor provides short-term backup power during supply interruptions. This energy reserve maintains the real-time clock and holds critical process data. The unit also features a watchdog timer that automatically resets the processor on fault detection. This watchdog ensures continuous operation without manual intervention.
Application Versatility
This controller works across a broad spectrum of industrial applications. It suits small-scale packaging machines and conveyor control systems. The device also performs effectively in water treatment and HVAC management. Its robust construction guarantees reliable performance in ambient temperatures from -20°C to +60°C.
Details
| Weight | 0.38 kg |
|---|---|
| Dimensions | 70 × 120 × 75 mm |
