PNOZ-X2.8P-777301 PILZ Safety Relay

PNOZ-X2.8P-777301-فطر 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 / بل ه, 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.

انهيار رمز النموذج

مقطع الكود	تعريف	وصف تفصيلي
PNOZ	بادئة سلسلة المنتج	Identifier for Pilz core safety relay product range
X	رمز السلسلة	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
ص	نوع الإنهاء	Screw terminal version; Push-in indicates spring-cage pluggable terminals, unmarked for standard terminals
777301	Order number	Unique global part number for purchasing and inventory management
فطر	Brand name	Pilz GmbH & Co. كجم, ألمانيا

المواصفات الفنية الأساسية

فئة المعلمة	مواصفة	ملاحظات
General Data
نوع المنتج	Dual-channel safety relay	Compliant with EN ISO 13849-1 (بل ه) & في 62061 (سيل 3)
Rated Supply	24الخامس التيار المتناوب/تيار مستمر (±15%)	Wide-range input compatible with standard industrial power supplies
البعد	94×22.5×121mm (الارتفاع × العرض × العمق)	22.5mm standard width for compact cabinet layout
تصاعد	35مم DIN السكك الحديدية (في 60715)	التثبيت العمودي, تشديد عزم الدوران: 0.5~0.8Nm
خصائص الإدخال
Input Circuits	2 independent dual-channel inputs (S11-S12/S52, S21-S22)	24في العاصمة, 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
خصائص الإخراج
Safety Outputs	3 مفتوح عادة (لا) contacts with redundant dual-contact series design	Redundant structure for guaranteed safe cut-off
الإخراج المساعد	1 مغلق عادة (نورث كارولاينا) اتصال	For status indication only, NOT permitted in safety circuits
تقييم الاتصال	AC1:240V/6A; DC1:24V/6A	AgCuNi silver-copper-nickel contact material for arc oxidation resistance
تقييم الاتصال	AC15:230الخامس/5 أ; DC13:24الخامس/5 أ
معلمات الأداء
وقت الاستجابة	≤50ms (input to output); reset time ≤100ms	Fast safety cut-off for high-speed machinery
استهلاك الطاقة	Max.100mA	Low-power design for energy saving
درجة الحرارة المحيطة	عملية: -10°C ~ +55°C; Storage: -35درجة مئوية ~ +70 درجة مئوية	Suitable for harsh industrial ambient conditions
حماية الدخول	IP20 (main body), IP40 (terminal area)	Must be installed inside control cabinet ≥IP54
الشهادات	م, سي سي سي, أول, بنفايات	Global market access certifications

ثالثا. Full Range Model List (Core PNOZ X2 Series)

نموذج	رقم الطلب.	جهد الإمداد	تكوين الإخراج	Start Mode	نوع المحطة
PNOZ X2.8P	777301	24الخامس التيار المتناوب/تيار مستمر	3لا + 1NC	Automatic / Monitored	أفسد
PNOZ X2.8	777300	24الخامس التيار المتناوب/تيار مستمر	3لا + 1NC	Automatic / Monitored	معيار
PNOZ X2.8P PI	777302	24الخامس التيار المتناوب/تيار مستمر	3لا + 1NC	Automatic / Monitored	البرنامج المساعد
PNOZ X2.7P	777311	24~240V AC/DC	3لا + 1NC	Automatic / Monitored	أفسد
PNOZ X2.7	777310	24~240V AC/DC	3لا + 1NC	Automatic / Monitored	معيار
PNOZ X2.10P	777321	24في العاصمة	2لا + 1NC	إعادة الضبط اليدوي	أفسد
PNOZ X2.11P	777331	24في العاصمة	3لا + 1NC	إعادة الضبط اليدوي	أفسد

Cross-Brand Equivalent Replacement Table

ماركة	Alternative Part	الاختلافات الرئيسية	نطاق التطبيق
شنايدر	Zelio SR2B121BD	Single-channel, 2لا + 1NC, 24VDC only	Low-risk applications with limited budget
سيمنز	3SK1111-1AB30	Dual-channel,3لا + 1NC,24الخامس التيار المتناوب/تيار مستمر	Full drop-in replacement, SIL3 compliant
اومرون	G9SA-321-T075	Dual-channel,3لا + 1NC,24الخامس التيار المتناوب/تيار مستمر	Matched for Japanese-built equipment, فعالة من حيث التكلفة
ايه بي بي	MSR125TP	Dual-channel,3لا + 1NC,24الخامس التيار المتناوب/تيار مستمر	Heavy-duty machinery with superior anti-vibration performance
Pilz Upgrade	PNOZ X2.7P (777311)	الجهد واسعة:24~240V AC/DC	Global projects with varying supply voltages

بيئة التطبيق & حالات الصناعة

Recommended Applications

Machinery Safety Monitoring: Emergency stop pushbuttons, safety door interlocks, safety light curtains, two-hand control stations
Automotive Manufacturing: Welding robots, coating production lines, lithium battery equipment interlock control
Electronics Assembly: SMT placement machines, AOI inspection equipment, laser cutter safety circuits
ماكينات التعبئة والتغليف: High-speed packaging lines, 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 (>10ز): extra vibration dampening required

Unprotected outdoor mounting (only IP20 body protection)

حالات التطبيق النموذجية

Case1: Lithium Battery Aging Room Safety Control for Automotive Industry

وظائف: Access door interlock, emergency cut-off on over-temperature, fire protection linkage

إعدادات: PNOZ X2.8P(777301)+safety door switch+temperature sensor+E-stop button

حصيلة: 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

حل: Replace with hardwired safety circuit using PNOZ X2.8P

Result: Zero breakdown over 5 سنين, response optimized ≤50ms, خفض تكاليف الصيانة بنسبة 60%

نصائح الاختيار & Quick Reference Rules

Quick Selection Formula

24V AC/DC X2.8, dual-channel with three NO & one NC<br>

محطة المسمار 777301, automatic start with top safety grade<br>

أوقف, ستارة خفيفة & باب السلامة, certified SIL3 & بل ه<br>

DIN rail mounting saves cabinet space, fits all industrial sites

Quick Reference Rules

Model Memorization: PNOZ X2.8P = Dual-channel + Mode8 + P=screw terminals
رمز الطلب:777301 = standard baseline part of Pilz X2 family
Core Specs:24الخامس التيار المتناوب/تيار مستمر,3لا + 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

سابعا. تثبيت & إرشادات الصيانة

مواصفات التثبيت

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

ظاهرة الخلل	السبب الجذري	Remedial Action
مؤشر الطاقة مطفأ	1. No power supply or reversed polarity	1. Verify A1/A2 wiring
مؤشر الطاقة مطفأ	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
Safety outputs fail to close	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
Contact ablation/burning	2. Missing snubber for inductive loads	2. Fit freewheeling diode(العاصمة) or varistor(تكييف) in parallel
Unexpected false tripping	1. Electromagnetic interference on input lines	1. Apply shielded cable with proper grounding
Unexpected false tripping	2. Misconfigured short-circuit detection	2. Adjust S11-S12/S21-S22 jumper setup