접촉기,회로 차단기,태양광 인버터,전기 계량기,태양 전지
PNOZ-X2.8P-777301-버섯 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 전자, 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.
- 모델 코드 분석
| 코드 세그먼트 | 정의 | 자세한 설명 |
| PNOZ | 제품 시리즈 접두어 | Identifier for Pilz core safety relay product range |
| 엑스 | 시리즈 코드 | 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 |
| 피 | Termination type | Screw terminal version; Push-in indicates spring-cage pluggable terminals, unmarked for standard terminals |
| 777301 | 주문 번호 | Unique global part number for purchasing and inventory management |
| 버섯 | 브랜드 이름 | Pilz GmbH & Co. KG, 독일 |
- 핵심 기술 사양
| 매개변수 카테고리 | 사양 | 비고 |
| General Data | ||
| 제품 유형 | Dual-channel safety relay | EN ISO 준수 13849-1 (PL 전자) & 안에 62061 (실 3) |
| 정격 공급 | 24V AC/DC (±15%) | Wide-range input compatible with standard industrial power supplies |
| 차원 | 94×22.5×121mm (H×W×D) | 22.5mm standard width for compact cabinet layout |
| 설치 | 35mm DIN 레일 (안에 60715) | 수직 설치, 조임 토크: 0.5~0.8Nm |
| 입력 특성 | ||
| Input Circuits | 2 independent dual-channel inputs (S11-S12/S52, S21-S22) | 24DC에서, 30mA 입력, compatible with PNP sensors |
| Input Function | Optional cross-contact short-circuit detection | Enabled by short-circuiting S11-S12; disabled by short-circuiting S21-S22 |
| 출력 특성 | ||
| Safety Outputs | 3 평상시 열림 (아니요) contacts with redundant dual-contact series design | Redundant structure for guaranteed safe cut-off |
| 보조 출력 | 1 평상시 닫힘 (NC) 연락하다 | 상태 표시 전용, NOT permitted in safety circuits |
| 접촉 등급 | AC1:240V/6A; DC1:24V/6A | AgCuNi silver-copper-nickel contact material for arc oxidation resistance |
| AC15:230V/5A; DC13:24V/5A | ||
| 성능 매개변수 | ||
| 응답 시간 | 50ms 이하 (input to output); reset time ≤100ms | Fast safety cut-off for high-speed machinery |
| 전력 소비 | Max.100mA | Low-power design for energy saving |
| 주변 온도 | 작업: -10°C ~ +55°C; 저장: -35°C ~ +70°C | Suitable for harsh industrial ambient conditions |
| 유입 방지 | IP20 (본체), IP40 (terminal area) | Must be installed inside control cabinet ≥IP54 |
| 인증 | CE, CCC, UL, RoHS 규제 | Global market access certifications |
III. Full Range Model List (Core PNOZ X2 Series)
| 모델 | 주문 번호. | 공급 전압 | 출력 구성 | Start Mode | 터미널 유형 |
| PNOZ X2.8P | 777301 | 24V AC/DC | 3아니요+1NC | 오토매틱 / Monitored | 나사 |
| PNOZ X2.8 | 777300 | 24V AC/DC | 3아니요+1NC | 오토매틱 / Monitored | 기준 |
| PNOZ X2.8P PI | 777302 | 24V AC/DC | 3아니요+1NC | 오토매틱 / Monitored | 플러그인 |
| PNOZ X2.7P | 777311 | 24~240V AC/DC | 3아니요+1NC | 오토매틱 / Monitored | 나사 |
| PNOZ X2.7 | 777310 | 24~240V AC/DC | 3아니요+1NC | 오토매틱 / Monitored | 기준 |
| PNOZ X2.10P | 777321 | 24DC에서 | 2아니요+1NC | 수동 재설정 | 나사 |
| PNOZ X2.11P | 777331 | 24DC에서 | 3아니요+1NC | 수동 재설정 | 나사 |
- Cross-Brand Equivalent Replacement Table
| 상표 | Alternative Part | 주요 차이점 | 적용범위 |
| 슈나이더 | Zelio SR2B121BD | 단일 채널, 2아니요+1NC, 24VDC only | Low-risk applications with limited budget |
| 지멘스 | 3SK1111-1AB30 | 듀얼 채널,3아니요+1NC,24V AC/DC | Full drop-in replacement, SIL3 compliant |
| 옴론 | G9SA-321-T075 | 듀얼 채널,3아니요+1NC,24V AC/DC | Matched for Japanese-built equipment, 비용 효율적 |
| 씨줄 | MSR125TP | 듀얼 채널,3아니요+1NC,24V AC/DC | Heavy-duty machinery with superior anti-vibration performance |
| Pilz Upgrade | PNOZ X2.7P (777311) | 넓은 전압:24~240V AC/DC | Global projects with varying supply voltages |
- 응용 환경 & 산업 사례
권장 애플리케이션
- Machinery Safety Monitoring: Emergency stop pushbuttons, safety door interlocks, safety light curtains, two-hand control stations
- 자동차 제조: Welding robots, coating production lines, lithium battery equipment interlock control
- Electronics Assembly: SMT placement machines, AOI inspection equipment, laser cutter safety circuits
- 포장기계: High-speed packaging lines, palletizing robots, over-temperature protection for heat-sealing devices
- Logistics Automation: Stacker cranes, AGV, conveyor safety door & E-stop systems
권장되지 않는 애플리케이션
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)
일반적인 적용 사례
Case1: Lithium Battery Aging Room Safety Control for Automotive Industry
기능: Access door interlock, emergency cut-off on over-temperature, fire protection linkage
구성: PNOZ X2.8P(777301)+safety door switch+temperature sensor+E-stop button
결과: 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
해결책: Replace with hardwired safety circuit using PNOZ X2.8P
결과: Zero breakdown over 5 연령, response optimized ≤50ms, 유지관리 비용 절감 60%
- 선택 팁 & 빠른 참조 규칙
Quick Selection Formula
24V AC/DC X2.8, dual-channel with three NO & one NC<br>
나사식 터미널 777301, automatic start with top safety grade<br>
비상 정지, 라이트 커튼 & 안전문, certified SIL3 & PL 전자<br>
DIN rail mounting saves cabinet space, fits all industrial sites
빠른 참조 규칙
- Model Memorization: PNOZ X2.8P = Dual-channel + Mode8 + P=screw terminals
- 주문 코드:777301 = standard baseline part of Pilz X2 family
- 핵심 사양:24V AC/DC,3아니요+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. 설치 & 유지 관리 지침
설치사양
- 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
| 결함 현상 | 근본 원인 | 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(교류) 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. 항공 운송 규정 준수 & Certification Details
UN 번호: 내장 리튬 배터리 없음, 위험하지 않은 물품으로 분류됨
운송 카테고리: 일반화물, acceptable for air, sea and land freight
CE Compliance: EN 준수 60947-5-1/-2 and EN ISO 13849-1
HS코드: 85364900 (Other electrical relays)
