| Segmentul de model | Full Designation | Descriere |
| 2981800 | Comanda nr. | Phoenix Contact global unique part number |
| PSR | PSR | Phoenix Contact PSR series safety relay (Programmable Safety Relay) |
| SCP | SCP | Funcția de siguranță: dedicated for Emergency Stop / Safety Gate monitoring (Safety Control for E-Stop/Door) |
| 24DC | 24DC | Control voltage: DC24V input |
| ESD | ESD | Function feature: Emergency Stop Delay |
| 4X1 | 4X1 | Contact configuration: 4 contacte (2 safety NO + 2 auxiliary NO), 1-channel safety input |
| 30 | 30 | Delay range: adjustable power-off delay 0.1s ~ 30s |
Aplicația de bază: Single-channel safety relay for Emergency Stop and Safety Gate monitoring. It complies with safety rating SIL 3 / Cat.4 PL e, with 0.1–30s adjustable power-off delay. Suitable for protection scenarios of automated equipment requiring safety stop delay.
- Specificații de bază
| Categoria parametrilor | Specificație detaliată | Observații |
| Safety Performance | Nivel de siguranță: SIL 3 (IEC 61508) | Meets highest industrial safety requirements |
| Nivel de performanță: PL e, Categorie 4 (ÎN ISO 13849-1) | ||
| PFHd: 2.5×10⁻⁸/h | ||
| Input Characteristics | Tensiune de control: DC24V (19.2~28.8V) | Compatible with standard industrial 24V DC control systems |
| Input Current: Max 40mA | ||
| Input Channel: 1 safety input (NC/NO optional) | ||
| Modul de resetare: Automat / Manual selectable | ||
| Output Characteristics | Contacte de siguranță: 2 pcs N/O (Force-guided) | Force-guided safety contacts ensure fail-safe operation |
| Contacte auxiliare: 2 pcs N/O | ||
| Contact Rating: AC-15: 230V/2,5A | ||
| DC-13: 24V/2,5A | ||
| Max Switching Voltage: 250V AC/DC | ||
| Max Switching Current: 6O | ||
| Delay Characteristics | Power-off delay: continuously adjustable 0.1s~30s | Adapt to different equipment stopping time requirements |
| Setting Accuracy: ±10% | ||
| Caracteristici fizice | Dimensiuni: W22.5mm × H99mm × D121mm | Single-channel width, saves cabinet space |
| Greutate: Aproximativ. 0.22kg | ||
| Montare: 35mm șină DIN (ÎN 60715) | ||
| Cablaj: Plug-in screw terminals | ||
| Environmental Characteristics | Temperatura de operare: -20~+60℃ | Industrial-grade environmental adaptability for harsh working conditions |
| Temperatura de depozitare: -40~+85℃ | ||
| Umiditate: 5~95%RH (necondens) | ||
| Rezistenta la vibratii: 10~150Hz, 2g | ||
| Rezistenta la socuri: 15g | ||
| Safety Certifications | CE, UL, CSA, TÜV, ATEX | Conform standardelor internaționale de siguranță, globally applicable |
- Lista de accesorii & Installation Guidelines
3.1 Accesorii standard
Safety relay unit ×1
Installation manual ×1
Terminal marking label ×1
Fixing clip ×2 (for DIN rail locking)
Delay adjustment screwdriver ×1 (special tool)
3.2 Precauții de instalare
- Mounting Requirement: Install on standard 35mm DIN rail; maintain ≥5mm clearance from adjacent modules for heat dissipation.
- Specificații de cablare:
Circuit de control: Connect DC24V to A1(+)、A2(-)
Safety Input: Connect E-stop / safety gate contact to S11、S12 (NC contact preferred)
Ieșire de siguranță: Connect safety circuit (de ex. bobina contactorului) la 13-14、23-24
Ieșire auxiliară: Connect alarm / indication circuit to 31-32、41-42
- Reset Setting:
Auto Reset: Automatically restore after power cycle
Resetare manuală: Requires external reset signal or manual reset button operation
- Delay Adjustment: Use the dedicated screwdriver to adjust the front panel potentiometer to set 0.1–30s power-off delay.
- Cross-model & Cross-brand Replacement
4.1 Phoenix Contact Same Series Alternative Models
| Model No. | Core Difference | Scenariul aplicației |
| 2981800 | 1 canal, 2 safety + 2 contacte auxiliare, 0.1–30s delay | Standard E-stop / safety gate monitoring (current model) |
| 2981801 | 1 canal, 2 safety + 2 contacte auxiliare, 0.1–10s delay | Equipment with short stopping time |
| 2981802 | 1 canal, 2 safety + 2 contacte auxiliare, 0.1–1s delay | Fast stop equipment |
| 2981810 | 2 canale, 4 safety + 2 contacte auxiliare, no delay | Dual-channel redundant safety system |
| 2981820 | 1 canal, 2 safety + 2 contacte auxiliare, with alarm output | System requiring alarm indication |
4.2 Cross-brand Equivalent Solutions
| Marca | Model | Parametri cheie | Notă de compatibilitate |
| Schneider | Zelio SR2P121BD | 1 canal, 2 safety contacts, 24În DC, Cat.4 | Similar function, different wiring layout |
| Siemens | 3SK1111-1AB30 | 1 canal, 2 safety contacts, 24În DC, SIL 3 | Different dimensions, cabinet rearrangement required |
| Omron | G9SA-321-T15 | 1 canal, 2 safety contacts, 24În DC, Cat.4 | Delay range 0.05–10s, slightly narrower |
| ABB | MSR1275 | 1 canal, 2 safety contacts, 24În DC, SIL 3 | Higher price, fully identical function |
| Weidmüller | DRM570730LT | 1 canal, 2 safety contacts, 24În DC, Cat.4 | Fixed 1s non-adjustable delay |
- Selecţie & Ghid de înlocuire
5.1 Core Selection Criteria
✅ Safety Level Matching: Ensure required safety rating (SIL/PL/Cat.) does not exceed product capability (SIL 3 / Cat.4 PL e).
✅ I/O Requirement:
Intrare: 1 channel sufficient; confirm NC or NO contact type.
Ieșire: Verify 2 safety + 2 auxiliary contacts meet control demands.
Capacitate de contact: Ensure load current ≤2.5A (AC-15/DC-13).
✅ Delay Requirement: Confirm 0.1–30s adjustable range covers equipment stopping time.
✅ Reset Mode: Select auto or manual reset according to operation needs.
✅ Environmental Adaptation: Operating temperature ≤60℃ and humidity within industrial standard range.
5.2 Upgrade & Opțiuni de înlocuire
Option A: Same Series Function Upgrade
More channels: 2981800 → 2981810 (2 canale, 4 safety contacts)
Add alarm output: 2981800 → 2981820 (with alarm output)
Shorter delay: 2981800 → 2981801 (0.1–10s) sau 2981802 (0.1–1s)
Option B: Migrate from PSRclassic to PSRmini (Space Optimization)
Model de înlocuire: 2981900 (PSRmini-SCP-24DC/ESD/4X1/30)
Avantaj: Only 17.5mm width (5mm narrower), functii identice, saves cabinet space.
Option C: Migrate from PSRclassic to PSRmodular (Extinderea sistemului)
Soluţie: PSRmodular system + safety function modules
Avantaj: Multi-channel expandable; integrates safety gate, E-stop, light curtain and other safety functions, suitable for complex safety systems.
5.3 Depanare comună
| Fenomen de eroare | Cauza posibila | Soluţie |
| Module indicator off | Control power disconnected or faulty | Check DC24V input, measure voltage within 19.2~28.8V |
| No safety output action | Safety input loop open | Check E-stop / safety gate contact wiring and loop continuity |
| Abnormal delay time | Improper potentiometer adjustment | Readjust with dedicated screwdriver; calibrate with timer recommended |
| Eșecul de resetare | Incorrect reset mode setting | Verify auto/manual reset configuration and check reset signal |
| Aderenta la contact | Overload current exceeded | Measure load current; add intermediate relay if necessary |
Phoenix Contact 2981800 (PSR-SCP-24DC/ESD/4X1/30) is a single-channel safety relay with adjustable power-off delay, specially designed for emergency stop and safety gate monitoring, reaching the highest safety level SIL 3 / Cat.4 PL e. Its 22.5mm slim design and plug-in wiring facilitate installation and maintenance, while the 0.1–30s adjustable delay adapts to various equipment shutdown requirements. During selection, focus on safety rating, Configurare I/O, delay range and reset mode. For upgrade, choose extended models in the same series or migrate to PSRmini / PSRmodular for space saving or system expansion.
Complete Model List of Phoenix Contact Safety Relays (Structured Classification)
- Model Naming Rule Overview
| Prefix | Cod de serie | Middle Code | Sens | Sufix | Sens |
| PSR | Basic identifier for Phoenix safety relay | SCP | E-stop / Safety Gate dedicated | 24DC | Control voltage DC24V |
| PSR | Releu de siguranță | SPP | Standard Safety Protection | ESD | Emergency Stop Delay (0.1-30s) |
| PSR | Releu de siguranță | MC | Mini Compact | 4X1 | Contact: 4 NU (2 safety + 2 auxiliar) |
| PSR | Releu de siguranță | MS | Monitoring Safety | 30 | Delay time range (0.1-30s) |
| PSR | Releu de siguranță | UNI | Universal Configurable | PI | Push-in spring terminal |
| PSR | Releu de siguranță | MM | Motion Monitoring | SC | Screw terminal |
- PSRclassic Series (Standard Safety Relays)
2.1 E-Stop / Safety Gate (SCP Series)
| Model | Comanda nr. | Parametrul de bază | Nivel de siguranță | Aplicație |
| PSR-SCP-24DC/ESD/4X1/30 | 2981800 | 1Ch, 2Safety+2Aux, 0.1-30s delay | SIL 3/Cat.4 PL e | Standard E-stop / Safety Gate |
| PSR-SCP-24DC/ESD/4X1/10 | 2981801 | 1Ch, 2Safety+2Aux, 0.1-10s delay | SIL 3/Cat.4 PL e | Short stop time equipment |
| PSR-SCP-24DC/ESD/4X1/1 | 2981802 | 1Ch, 2Safety+2Aux, 0.1-1s delay | SIL 3/Cat.4 PL e | Fast stop equipment |
| PSR-SCP-24DC/ESD/5X1/1X2/300 | 2981428 | 1/2Ch, 3Safety+1NC+2Aux, 0.1-300s delay | SIL 3/Cat.4 PL e | Long delay shutdown system |
| PSR-SCP-24UC/ESA4/3X1/1X2/B | 2963763 | 2Ch, 3Safety+1Aux, no delay | SIL 3/Cat.4 PL e | Dual-channel redundant safety system |
| PSR-SCP-24DC/MXF3/4X1/2X2/B | 2903257 | Multi-Ch, 4Safety+2Aux, 3 safety functions | SIL 3/Cat.4 PL e | Multi-function safety monitoring |
2.2 Standard Safety Function (SPP Series)
| Model | Comanda nr. | Parametrul de bază | Nivel de siguranță | Aplicație |
| PSR-SPP-24DC/SDC4/2X1/B | 2901426 | 1Ch, 2Safety contacts, no delay | SIL 3/Cat.4 PL e | Basic safety loop |
| PSR-SPP-230AC/ESAM2/3X1/1X2/B | 2901431 | 1Ch, 3Safety+1Aux, AC230V | SIL 3/Cat.4 PL e | AC power supply system |
| PSR-SPP-24UC/URM/3X1/3X2 | 2901427 | 1Ch, 3Safety+3Aux, universal voltage | SIL 3/Cat.4 PL e | Multi-voltage compatible system |
| PSR-SPP-24DC/ESD/3X1/1X2/30 | 2981427 | 1Ch, 3Safety+1Aux, 0.1-30s delay | SIL 3/Cat.4 PL e | Delay-type safety system |
2.3 Monitorizarea cortinei luminoase (SCR Series)
| Model | Comanda nr. | Parametrul de bază | Nivel de siguranță | Aplicație |
| PSR-SCR-24DC/3X1/1X2 | 2981500 | 2Ch, 3Safety+1Aux, dedicated for light curtain | SIL 3/Cat.4 PL e | Standard light curtain monitoring |
| PSR-SCR-24DC/4X1/2X2 | 2981501 | 2Ch, 4Safety+2Aux, dedicated for light curtain | SIL 3/Cat.4 PL e | Complex light curtain safety system |
| PSR-SCR-24DC/5X1/1X2 | 2981502 | 2Ch, 5Safety+1Aux, dedicated for light curtain | SIL 3/Cat.4 PL e | High-density safety output |
2.4 Two-Hand Control (SCT Series)
| Model | Comanda nr. | Parametrul de bază | Nivel de siguranță | Aplicație |
| PSR-SCT-24DC/2X1/1X2 | 2981600 | 2Ch, 2Safety+1Aux, two-hand control | SIL 3/Cat.4 PL e | Standard two-hand operation |
| PSR-SCT-24DC/3X1/2X2 | 2981601 | 2Ch, 3Safety+2Aux, two-hand control | SIL 3/Cat.4 PL e | Complex two-hand operation |
- PSRmini Series (Micro Compact, 17.5mm Width)
3.1 Basic Safety Function (MC Series)
| Model | Comanda nr. | Parametrul de bază | Nivel de siguranță | Aplicație |
| PSR-MC32-3NO-1NC-24-230UC-SP | 2700525 | 1/2Ch, 3Safety+1NC, universal voltage | SIL 3/Cat.4 PL e | General safety monitoring |
| PSR-MC34-3NO-1DO-24DC-SP | 2700548 | 1/2Ch, 3Safety+1diagnostic output, DC24V | SIL 3/Cat.4 PL e | System with diagnostic output |
| PSR-MC45-3NO-1DO-24DC-SC | 1082024 | 1Ch, 3Safety+1diagnostic output, DC24V | SIL 3/Cat.4 PL e | Compact E-stop system |
| PSR-MC22-2NO-1NC-24DC-SP | 2700500 | 1Ch, 2Safety+1NC, DC24V | SIL 3/Cat.4 PL e | Small safety loop |
3.2 Safety Monitoring Module (MS Series)
| Model | Comanda nr. | Parametrul de bază | Nivel de siguranță | Aplicație |
| PSR-MS21-1NO-1DO-24DC-SC | 2702192 | 1Ch, 1Safety+1digital output, DC24V | SIL 3/Cat.4 PL e | Safety controller expansion |
| PSR-MS31-2NO-1DO-24DC-SP | 2702200 | 1Ch, 2Safety+1digital output, DC24V | SIL 3/Cat.4 PL e | Safety status monitoring |
- PSRmodular Series (Modular Safety System)
4.1 Main Control Module
| Model | Comanda nr. | Parametrul de bază | Nivel de siguranță | Aplicație |
| PSR-UNI-L-1X4NO-1DO-24DC-PI | 1487648 | 1/2Ch, 4Safety+1DO, configurable | SIL 3/Cat.4 PL e | Universal configurable safety system |
| PSR-UNI-L-2X4NO-2DO-24DC-PI | 1487649 | 2Ch, 8Safety+2DO, configurable | SIL 3/Cat.4 PL e | Complex safety system |
| PSR-UNI-L-1X2NO-1NC-1DO-24DC-PI | 1487650 | 1/2Ch, 2Safety+1NC+1DO | SIL 3/Cat.4 PL e | System with NC output |
4.2 Expansion Module
| Model | Comanda nr. | Parametrul de bază | Nivel de siguranță | Aplicație |
| PSR-EXT-L-1X4NO-24DC-PI | 1487651 | 4-safety output expansion | SIL 3/Cat.4 PL e | Output expansion |
| PSR-EXT-L-1X2NO-1NC-24DC-PI | 1487652 | 2Safety+1NC output expansion | SIL 3/Cat.4 PL e | Mixed output expansion |
- PSRmotion Series (Motion Monitoring Safety Relay)
5.1 Zero Speed / OverSpeed Monitoring
| Model | Comanda nr. | Parametrul de bază | Nivel de siguranță | Aplicație |
| PSR-MM25-1NO-2DO-24DC-SC | 2702355 | Sensorless zero-speed monitoring, 3-motor de fază | SIL 3/Cat.3 PL e | Motor zero-speed safety protection |
| PSR-MM35-1NO-2DO-24DC-SC | 2702356 | Overspeed monitoring, 3-motor de fază | SIL 3/Cat.3 PL e | Motor overspeed safety protection |
| PSR-MM45-1NO-2DO-24DC-SC | 2702357 | Zero-speed + overspeed dual monitoring, 3-motor de fază | SIL 3/Cat.3 PL e | Full motor speed monitoring |
5.2 Rotation Direction Monitoring
| Model | Comanda nr. | Parametrul de bază | Nivel de siguranță | Aplicație |
| PSR-MD25-1NO-2DO-24DC-SC | 2702360 | Rotation direction monitoring, 3-motor de fază | SIL 3/Cat.3 PL e | Motor rotation direction safety control |
- Safety Coupling Relays (PSR-SCP/SPP Series)
| Model | Comanda nr. | Parametrul de bază | Nivel de siguranță | Aplicație |
| PSR-SCP-24DC/FSP/1X1/1X2 | 2981700 | 1Safety+1Aux contact, coupling function | SIL 3 | Safety signal isolation |
| PSR-SCP-24DC/FSP2/2X1/1X2 | 2981701 | 2Safety+1Aux contact, coupling function | SIL 3 | Dual-channel safety isolation |
| PSR-PS21-1NO-1NC-24DC-SC | 2981702 | 1Safety+1NC contact, coupling function | SIL 3 | Safety signal switching |
- Key Selection Parameter Comparison
| Categoria parametrilor | Key Index | Sfaturi de selecție |
| Nivel de siguranță | SIL 1-3, Cat.1-4, PL a-e | Determined by equipment risk assessment; max support SIL 3/Cat.4 PL e |
| Input Channel | 1 Canal / 2 Canal | Single channel for basic safety; dual channel for redundant safety |
| Configurare contact | Quantity of safety / contacte auxiliare | ≥2 safety contacts recommended; auxiliary contacts for alarm & indication |
| Tensiune de control | DC24V / AC230V / Universal | Match on-site control system power supply |
| Function Feature | Delay / Diagnostic / Cross-circuit detection | E-stop requires delay; complex system needs diagnostic function |
| Mounting Width | 17.5mm / 22.5mm / 27.5mm | Choose PSRmini (17.5mm) for limited cabinet space |
| Wiring Type | Screw / Push-in spring | Push-in for frequent wiring; screw type for vibration environment |
- Note suplimentare
8.1 Poziționarea în serie
PSRclassic: Standard type with complete functions, width starting from 22.5mm, suitable for conventional safety applications.
PSRmini: Micro compact type, only 17.5mm width, saves cabinet space.
PSRmodular: Configurable modular system, suitable for complex safety systems with expandable functions.
PSRmotion: Dedicated for motion monitoring, applicable to motor zero-speed / overspeed / rotation direction safety control.
8.2 Replacement Information
Old models are gradually phased out; priority recommended to select models manufactured after 2020.
Some models are discontinued; refer to Phoenix Contact official website or technical support for replacement.
8.3 Certificare de siguranță
Full series certified by CE, UL, CSA, TÜV, conform cu IEC 61508 and EN ISO 13849-1.
Partial models with ATEX certification for explosive atmosphere applications.
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