Phoenix Contact PSR-MM30-2NO-2DO-24DC-SC – Intelligent Safety Relay for Motion and Speed Control
The Phoenix Contact PSR-MM30-2NO-2DO-24DC-SC is a precision-engineered 2-channel safety relay designed to monitor over-speed and zero-speed conditions in machinery. It is compatible with HTL, TTL, and sine/cosine encoders as well as proximity sensors, ensuring reliable detection and shutdown in the event of unsafe motion. With compliance up to SIL 3, Category 4, and Performance Level e, this compact 22.5 mm module safeguards operators and equipment across a wide range of industrial automation systems. Its robust design and flexible configuration make it ideal for critical applications requiring dependable motion monitoring.
Engineered for advanced motion safety, the PSR-MM30-2NO-2DO-24DC-SC provides precise speed control and fault detection for rotating or moving components. The unit supports custom parameter settings and features force-guided relay outputs for fail-safe operation. Through its intuitive configuration and diagnostic functions, it minimizes setup time while maximizing system reliability. This safety relay ensures accurate response to speed deviations, helping maintain production efficiency and personnel safety. Its durable construction, broad temperature tolerance, and versatile sensor compatibility make it a trusted choice for modern machinery safety systems.
Why PSR-MM30-2NO-2DO-24DC-SC?
Choose the PSR-MM30-2NO-2DO-24DC-SC for its exceptional ability to merge safety, precision, and versatility in one slim module. It intelligently monitors multiple speed zones and downtime with outstanding accuracy, offering seamless integration across diverse control systems. Its robust safety ratings make it the go-to solution for motion-critical industries that can’t afford even a millisecond of risk.
What problem does it solve?
This safety relay eliminates the danger of uncontrolled or excessive machine speeds that could lead to equipment damage or operator injury. By instantly detecting over-speed or zero-speed conditions, it triggers a safe and rapid shutdown. The result—enhanced productivity, minimized downtime, and compliance with the strictest global safety standards.
Key Features & Specifications – Phoenix Contact PSR-MM30-2NO-2DO-24DC-SC (Article No. 2702357)
| Feature | Details | Benefit |
|---|---|---|
| Product Type | 2-channel over-speed and zero-speed safety relay | Enables precise monitoring of motion conditions to prevent mechanical hazards |
| Safety Standards | SIL 3, Cat. 4, PL e compliance (EN ISO 13849-1, IEC 61508, EN IEC 62061) | Guarantees highest level of functional safety for industrial equipment |
| Control Type | Dual-channel configuration with electromechanical, force-guided contacts | Provides redundant safety structure to ensure fail-safe operation |
| Input Compatibility | Supports HTL, TTL, sine/cosine encoders and proximity switches | Works with various motion sensors, increasing installation flexibility |
| Supply Voltage | 24 V DC (20.4 V to 26.4 V range) | Stable and reliable performance in industrial power environments |
| Response Time | <200 ms (auto start) / <150 ms (manual start) | Ensures rapid reaction to unsafe speed changes |
| Output Contacts | 2 × N/O safety contacts (6 A, AgSnO₂) | Provides reliable signal switching for safety circuits |
| Diagnostic Software | Configurable via PSRmotion software (free download) | Simplifies setup, calibration, and real-time monitoring |
| Housing Width | 22.5 mm slim DIN-rail design | Saves panel space and simplifies mounting in control cabinets |
| Ambient Temperature Range | -40 °C to +55 °C | Performs reliably in harsh industrial environments |
| Protection Rating | IP20 housing | Safe for use within protected control enclosures |
| Connection Type | Pluggable screw terminal block | Allows easy wiring, maintenance, and quick replacement |
| Certifications | CE, UL, cUL, Functional Safety Approved | Globally recognized compliance for machine integration |
Download Phoenix Contact PSR-MM30-2NO-2DO-24DC-SC (2702357) Datasheet
Commercial Information – Phoenix Contact PSR-MM30-2NO-2DO-24DC-SC (Article No. 2702357)
| Commercial Data | Details |
|---|---|
| Part Number | 2702357 |
| GTIN Number | 4055626133225 |
| Tariff Number | 90328900 |
| Weight | 191.8 g |
| Country of Origin | Germany (DE) |
The Applications – Phoenix Contact PSR-MM30-2NO-2DO-24DC-SC
1. Precision Speed Control in CNC and Machining Centers
In precision machining and woodworking lines, spindles can reach high rotational speeds that pose risks during tool changes or setup. The PSR-MM30 ensures operator protection by detecting unsafe speed levels and immediately engaging a safe stop when thresholds are exceeded. Its encoder compatibility allows accurate motion tracking even at low speeds, preventing accidental rotation when guards are open and ensuring compliance with strict industrial safety standards.
2. Overspeed Protection in Small Wind Turbines
Small wind turbines must operate safely under fluctuating wind conditions to prevent mechanical damage. By monitoring rotor shaft speed, the PSR-MM30 detects over-rotation in real time and triggers automatic braking or pitch adjustment. Its dual-channel design provides fault redundancy, offering reliable safety even in continuous operation. This ensures stable performance, extended equipment life, and protection against catastrophic rotor failures.
3. Conveyor System Monitoring in Material Handling Plants
In conveyor systems used for mining, logistics, or production lines, unmonitored speed variations can cause belt slippage, overload, or stoppage. The PSR-MM30 continuously measures running speed and downtime intervals, triggering an emergency stop when abnormal conditions occur. With configurable delay times and diagnostic feedback, it prevents equipment wear, protects operators during maintenance, and maintains consistent production flow.
4. Safe Motion Supervision in Robotic and Assembly Lines
Automated assembly lines and robotic cells require precise coordination between human and machine activity. The PSR-MM30 supervises motion start-up, acceleration, and zero-speed states to ensure the system only operates when safe. In rotary indexing tables or robot bases, it confirms complete standstill before allowing access. This feature not only improves safety but also reduces unplanned downtime by providing early fault detection and system health monitoring.
Related Products & Accessories – Phoenix Contact PSR-MM30-2NO-2DO-24DC-SC
| Category | Product Name | Part Number | Description | Purpose / Compatibility |
|---|---|---|---|---|
| Programming Cable | CAB-USB A/MICRO USB B/2,0M | 2701626 | USB Type-A to Micro-USB Type-B programming cable, 2 m length | Connects the PSR-MM30 to a PC for configuration and parameter setup using PSRmotion software |
| Crimping Tool | CRIMPFOX 6 | 1212034 | Crimping pliers for ferrules from 0.25 mm² to 6.0 mm² | Used to prepare and secure conductors before wiring the PSR-MM30 terminals |
| Power Supply Unit | QUINT-PS/1AC/24DC/5 | 2866750 | 24 V DC, 5 A industrial-grade power supply | Provides stable and noise-free 24 V DC supply to the PSR-MM30 module |
| Safety Relay Extension | PSR-MX35-1NO-1NC-24DC | 2700056 | Safety relay extension module with 1 NO and 1 NC contact | Extends output switching capabilities when paired with the PSR-MM30 |
| Signal Cable (RJ45) | CAB-RJ45/0.5M | 1407567 | Industrial RJ45 cable, 0.5 m length | Connects motion sensors or encoders to the PSR-MM30’s RJ45 interface |
| DIN Rail End Bracket | CLIPFIX 35 | 3022276 | End clamp for securing devices on a 35 mm DIN rail | Keeps the PSR-MM30 and adjacent modules firmly in place on mounting rails |
| Ferrules Kit | AI 0,75-10 WH | 3200125 | Set of insulated ferrules, 0.75 mm² cross section | Ensures secure, vibration-resistant wiring connections for terminal blocks |
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