Contattore,interruttore automatico,inverter solare,contatore elettrico,batterie solari
PNOZ-X2.8P-777301-FUNGO is the most widely used dual-channel safety relay from Pilz’s PNOZ X product line. Its core advantages cover wide 24V AC/DC operating voltage, 3NO+1NC contact configuration, high safety rating of SIL 3 / PL e, and ultra-fast response within ≤50ms. It is extensively deployed for various industrial safety monitoring applications. Thanks to hardwired design, it delivers superior reliability over software-based solutions under high-vibration and severe EMI conditions, making it an optimal choice for industrial automation safety protection.
- Scomposizione del codice modello
| Segmento di codice | Definizione | Descrizione dettagliata |
| PNOZ | Prefisso della serie di prodotti | Identifier for Pilz core safety relay product range |
| X | Codice della serie | Basic standalone safety relay of PNOZ X series, operable without extension modules |
| 2.8 | Functional code | “2” stands for dual-channel monitoring; “8” denotes automatic / monitored start mode with 3 safety outputs plus 1 auxiliary output |
| P | Tipo di terminazione | Screw terminal version; Push-in indicates spring-cage pluggable terminals, unmarked for standard terminals |
| 777301 | Numero dell'ordine | Unique global part number for purchasing and inventory management |
| FUNGO | Brand name | Pilz GmbH & Co. KG, Germania |
- Specifiche tecniche principali
| Categoria dei parametri | Specifica | Osservazioni |
| General Data | ||
| Tipo di prodotto | Dual-channel safety relay | Conforme alla norma EN ISO 13849-1 (PL e) & IN 62061 (SIL 3) |
| Rated Supply | 24V CA/CC (±15%) | Wide-range input compatible with standard industrial power supplies |
| Dimensione | 94×22.5×121mm (A×L×P) | 22.5mm standard width for compact cabinet layout |
| Montaggio | 35Guida DIN da mm (IN 60715) | Installazione verticale, coppia di serraggio: 0.5~0.8Nm |
| Caratteristiche di ingresso | ||
| Input Circuits | 2 independent dual-channel inputs (S11-S12/S52, S21-S22) | 24A DC, 30mA input, compatible with PNP sensors |
| Input Function | Optional cross-contact short-circuit detection | Enabled by short-circuiting S11-S12; disabled by short-circuiting S21-S22 |
| Caratteristiche di uscita | ||
| Safety Outputs | 3 Normalmente aperto (NO) contacts with redundant dual-contact series design | Redundant structure for guaranteed safe cut-off |
| Auxiliary Output | 1 Normalmente chiuso (NC) contatto | Solo per indicazione dello stato, NOT permitted in safety circuits |
| Valutazione dei contatti | AC1:240V/6A; DC1:24V/6A | AgCuNi silver-copper-nickel contact material for arc oxidation resistance |
| AC15:230V/5A; DC13:24V/5A | ||
| Parametri di prestazione | ||
| Tempo di risposta | ≤50ms (input to output); reset time ≤100ms | Fast safety cut-off for high-speed machinery |
| Consumo energetico | Max.100mA | Low-power design for energy saving |
| Temperatura ambiente | Operazione: -10°C~+55°C; Magazzinaggio: -35°C~+70°C | Suitable for harsh industrial ambient conditions |
| Protezione dall'ingresso | IP20 (corpo principale), IP40 (terminal area) | Must be installed inside control cabinet ≥IP54 |
| Certificazioni | CE, CCC, UL, RoHS | Global market access certifications |
III. Full Range Model List (Core PNOZ X2 Series)
| Modello | Ordine n. | Tensione di alimentazione | Configurazione dell'uscita | Start Mode | Tipo di terminale |
| PNOZ X2.8P | 777301 | 24V CA/CC | 3NA+1NC | Automatico / Monitored | Vite |
| PNOZ X2.8 | 777300 | 24V CA/CC | 3NA+1NC | Automatico / Monitored | Standard |
| PNOZ X2.8P PI | 777302 | 24V CA/CC | 3NA+1NC | Automatico / Monitored | Collegare |
| PNOZ X2.7P | 777311 | 24~240V AC/DC | 3NA+1NC | Automatico / Monitored | Vite |
| PNOZ X2.7 | 777310 | 24~240V AC/DC | 3NA+1NC | Automatico / Monitored | Standard |
| PNOZ X2.10P | 777321 | 24A DC | 2NA+1NC | Ripristino manuale | Vite |
| PNOZ X2.11P | 777331 | 24A DC | 3NA+1NC | Ripristino manuale | Vite |
- Cross-Brand Equivalent Replacement Table
| Marca | Alternative Part | Differenze chiave | Ambito di applicazione |
| Schneider | Zelio SR2B121BD | Single-channel, 2NA+1NC, 24VDC only | Low-risk applications with limited budget |
| Siemens | 3SK1111-1AB30 | Doppio canale,3NA+1NC,24V CA/CC | Full drop-in replacement, SIL3 compliant |
| Omron | G9SA-321-T075 | Doppio canale,3NA+1NC,24V CA/CC | Matched for Japanese-built equipment, conveniente |
| ABB | MSR125TP | Doppio canale,3NA+1NC,24V CA/CC | Heavy-duty machinery with superior anti-vibration performance |
| Pilz Upgrade | PNOZ X2.7P (777311) | Wide voltage:24~240V AC/DC | Global projects with varying supply voltages |
- Ambiente applicativo & Casi di settore
Applicazioni consigliate
- Machinery Safety Monitoring: Emergency stop pushbuttons, safety door interlocks, safety light curtains, two-hand control stations
- Produzione automobilistica: Welding robots, coating production lines, lithium battery equipment interlock control
- Electronics Assembly: Macchine per il posizionamento SMT, AOI inspection equipment, laser cutter safety circuits
- Macchine per l'imballaggio: Linee di confezionamento ad alta velocità, palletizing robots, over-temperature protection for heat-sealing devices
- Logistics Automation: Stacker cranes, AGVs, conveyor safety door & E-stop systems
Non-Recommended Applications
Safety systems requiring complex logic operations (PNOZmulti modular safety controller recommended)
Extreme high-vibration environments (>10G): extra vibration dampening required
Unprotected outdoor mounting (only IP20 body protection)
Casi applicativi tipici
Case1: Lithium Battery Aging Room Safety Control for Automotive Industry
Funzioni: Access door interlock, emergency cut-off on over-temperature, fire protection linkage
Configurazione: PNOZ X2.8P(777301)+safety door switch+temperature sensor+E-stop button
Risultato: PL e safety level achieved to prevent thermal runaway of lithium cells
Case2: Safety Circuit Retrofit for Laser Cutting Machine
Original Issue: Distributed safety PLC I/O triggered false shutdown twice in three years due to EMI interference
Soluzione: Replace with hardwired safety circuit using PNOZ X2.8P
Risultato: Zero breakdown over 5 anni, response optimized ≤50ms, costi di manutenzione ridotti 60%
- Suggerimenti per la selezione & Regole di riferimento rapido
Quick Selection Formula
24V AC/DC X2.8, dual-channel with three NO & one NC<fratello>
Terminale a vite 777301, automatic start with top safety grade<fratello>
E-stop, cortina di luce & porta di sicurezza, certified SIL3 & PL e<fratello>
DIN rail mounting saves cabinet space, fits all industrial sites
Regole di riferimento rapido
- Model Memorization: PNOZ X2.8P = Dual-channel + Mode8 + P=screw terminals
- Codice ordine:777301 = standard baseline part of Pilz X2 family
- Specifiche principali:24V CA/CC,3NA+1NC,≤50ms response,SIL3/PL e
- Terminal Wiring Rules:
Short S11-S12: Activate contact short-circuit detection
Short S21-S22: Deactivate contact short-circuit detection
Short S12-S34: Enable automatic start mode
Short S52-S11: Enable automatic reset function
VII. Installazione & Linee guida per la manutenzione
Specifiche di installazione
- Mount vertically inside control cabinet with terminals facing upward for natural convection cooling
- Maintain ≥50mm clearance from heat-generating components, ≥30mm from cabinet inner walls
- Separate wiring of safety circuits and power circuits; route crossing wires at 90° to reduce EMI coupling
- Install 10A fuse in series ahead of output contacts for contact protection
Common Troubleshooting Guide
| Fenomeno di guasto | Root Cause | Remedial Action |
| Power indicator off | 1. No power supply or reversed polarity | 1. Verify A1/A2 wiring |
| 2. Input voltage out of tolerance | 2. Confirm stable 24V AC/DC supply | |
| Safety outputs fail to close | 1. Open input circuit | 1. Check continuity of S11-S12/S21-S22 |
| 2. Incorrect start circuit configuration | 2. Confirm jumper status of S12-S34 | |
| Contact ablation/burning | 1. Overloaded output rating | 1. Upgrade to higher-rated relay |
| 2. Missing snubber for inductive loads | 2. Fit freewheeling diode(DC) or varistor(AC) in parallel | |
| Unexpected false tripping | 1. Electromagnetic interference on input lines | 1. Apply shielded cable with proper grounding |
| 2. Misconfigured short-circuit detection | 2. Adjust S11-S12/S21-S22 jumper setup |
VIII. Air Shipment Compliance & Dettagli della certificazione
Numero ONU: Nessuna batteria al litio integrata, classified as non-dangerous goods
Categoria Trasporti: Carico generale, acceptable for air, sea and land freight
CE Compliance: Conforme alla norma EN 60947-5-1/-2 and EN ISO 13849-1
HS Code: 85364900 (Other electrical relays)
