접촉기,회로 차단기,태양광 인버터,전기 계량기,태양 전지
For cross-brand replacement of model 751104, 핵심 차이점은 시스템 통합 호환성에 있습니다., 진단 기능, 배선 방법 및 가격대. Siemens는 전체 Siemens 기반 시스템에 이상적입니다.; Schneider는 강력한 진단 기능을 자랑합니다.; Omron은 가장 컴팩트한 크기를 자랑합니다.; Phoenix Contact는 높은 비용 성능을 제공합니다.; 바이드뮬러는 유연한 배선을 제공합니다; Eaton은 탁월한 환경 적응성을 제공합니다.; Wieland는 Pilz 제품과 동일한 치수를 공유합니다..
버섯 751104 PNOZ s4 Compact Safety Relay
- 기본정보 & Precise Model Definition
주문번호: 751104
공식 모델: PNOZ s4 C 24VDC
시리즈: PNOZsigma s Compact Safety Relay
Official Manual: 21396-EN-21 (2026 버전)
모델 분석
| 분절 | 의미 | 설명 |
| PNOZ | Core series code of Pilz safety relays | Safety control products complying with EN ISO 13849-1 |
| 에스 | Ultra-slim compact design | Housing width: only 22.5mm, 캐비닛 공간 절약 |
| 4 | Contact configuration code | 기준: 3 평상시 열림 (아니요) + 1 평상시 닫힘 (NC) 안전 접점 |
| 기음 | 터미널 유형 | Cage spring terminals (screwless); old model 750104 adopts screw terminals |
| 24VDC | 정격 작동 전압 | DC 24V, 전압 범위: 20.4-26.4다섯 (-15%/+10%) |
- Core Electrical Specifications (Official Authorized Data)
| 범주 | 사양 | 비고 |
| Power Supply Parameters | ||
| 정격 작동 전압 | DC 24V | 변동 범위: 20.4~26.4V |
| Power Consumption Current | ≤120mA | 무부하 상태 |
| 돌입 전류 | 0.2에이 | Pulse duration: 15ms |
| 입력 특성 | ||
| 입력 채널 | Dual-channel safety input (S11-S12; S21-S22) | Supports single/dual-channel wiring with inter-contact short-circuit detection |
| 입력 전류 | 50채널당 mA | At 24VDC |
| 재설정 모드 | 수동 / Automatic optional | Automatic reset enabled by short-circuiting S34-S12 |
| 출력 특성 | ||
| Safety Outputs | 3 연락처 없음: 13-14, 23-24, 33-34 | Each group consists of 2 series-connected NO contacts for higher safety |
| 보조 출력 | 1 NC접점: 41-42 | For fault indication and alarm signal |
| Rated Contact Current | 6에이 (AC-1/DC-1) | Resistive load at 240VAC / 24VDC |
| Thermal Rated Current | 4.5에이 | When 3 contacts operate simultaneously |
| 기계 & 환경 매개변수 | ||
| 응답 시간 | ≤15ms | Key safety-related index |
| Housing Width | 22.5mm | Standard DIN rail mounting size |
| 보호 등급 | IP20 | For cabinet internal installation |
| 작동 온도 | -10℃ ~ +55℃ | 보관온도: -25℃ ~ +70℃ |
| 배선 유형 | Cage spring clamp terminal | Wire cross-section: 0.2~2.5mm² |
| 안전 인증 | ||
| 안전 수준 | ISO에서 13849-1: PL 전자, 카테고리 4 | Highest safety rating |
| Functional Safety | IEC 61508: SIL3 | Applicable to safety-critical systems |
| 국제 인증 | CE, TÜV, UL, CSA | Globally approved |
- Full PNOZ s Series Order Number List (주류 모델)
| 주문 번호. | 모델 | 전압 | 연락처 구성 | 터미널 유형 | 핵심 기능 |
| 751101 | PNOZ s1 C | 24VDC | 1아니요+1NC | 스프링 클램프 | Single-channel input, basic safety control |
| 751102 | PNOZ s2 C | 24VDC | 3아니요+1NC | 스프링 클램프 | Single-channel input, no short-circuit detection |
| 751103 | PNOZ s3 C | 24VDC | 3아니요+1NC | 스프링 클램프 | Dual-channel input, manual reset |
| 751104 | PNOZ s4 C | 24VDC | 3아니요+1NC | 스프링 클램프 | Dual-channel input, manual/automatic reset optional (mainstream model) |
| 751105 | PNOZ s5 C | 24VDC | 4아니요 (2 instant + 2 delayed) | 스프링 클램프 | Delayed output, for equipment requiring braking delay |
| 751106 | PNOZ s6 C | 24VDC | 3NO+1NC+1 semiconductor output | 스프링 클램프 | Solid-state output, suitable for high-speed switching |
| 750104 | PNOZ s4 | 24VDC | 3아니요+1NC | 나사식 터미널 | Obsolete model, replaced by 751104 |
| 751204 | PNOZ s4 C 24VDC | 24VDC | 3아니요+1NC | 스프링 클램프 | High-current upgraded version, rated contact current 10A |
- 대사 & Compatibility List
4.1 Old & 새로운 모델 교체
| 구형 모델 | 교체 모델 | 교체 설명 |
| 750104 | 751104 | 완벽하게 호환됨; only terminal changed from screw to spring clamp, 동일한 기능 & 매개변수 |
| 750134 | 751104 | Replacement for wide voltage version (24-240V AC/DC); confirm power supply type first |
4.2 Competitor Equivalent Reference (Same-grade Safety Relays)
| 상표 | 모델 | Comparative Advantages |
| 지멘스 | 3TK2825-1BB40 | 저렴한 가격, perfect for Siemens PLC system integration |
| 슈나이더 | XPS-AV1110 | More comprehensive diagnostic functions, fit for complex safety systems |
| 옴론 | G9SA-321-T075 | More compact size, ideal for ultra-narrow installation space |
| PILZ 751104 | — | High safety level (PL e/SIL3), flexible wiring, complete global certifications |
- 응용 시나리오 & 산업 사례
✅ Recommended Application Scenarios
- Emergency Stop Circuit: Connect series emergency stop buttons to cut off power of hazardous equipment instantly once triggered
- Safety Gate Monitoring: Detect open/closed status of protective gates and halt moving machine parts when gates open
- Photoelectric Safety Protection: Connect safety light curtains to stop equipment when personnel enter dangerous zones
- Two-hand Control: Applied to punching & 벤딩 머신; machine starts only with simultaneous two-hand operation to avoid misoperation
- Automated Production Line: Multi-device linkage safety control for zoned emergency stop
- 포장 / 인쇄 / Injection Molding Machinery: Mold protection and safety interlock control
Typical Industry Applications
자동차 제조: Safety fence monitoring for welding robots
Electronic Assembly: Safety gate interlock for SMT production lines
Food Processing: Emergency stop circuit for filling machines complying with food machinery safety standards
공작기계 장비: Safety guard control for CNC machine tools
❌ Not Recommended Scenarios
Direct AC220V power supply (convert to 24VDC via transformer)
Outdoor open-air, 높은 습도 (>95%RH) and heavy dust environments (only IP20 protection)
Direct switching of high-power main circuits (max 6A contact current; expand via contactors)
Explosion-proof areas (without explosion-proof certification)
Underwater installation or high-pressure washing environments
- 항공 화물 규정 준수 & Certification Info
6.1 Air Freight Compliance Confirmation
No built-in batteries or energy storage components: Classified as ordinary industrial electrical goods, non-dangerous goods
Air freight category: General cargo, no special shipping documents or marks required
Sea & land transportation: No restrictions, shipped as standard industrial products
6.2 주요 인증 & Official Numbers
| 인증 | Certificate No. | Applied Standard |
| CE | 0120-CPD-022 | 안에 60947-5-1, ISO에서 13849-1 |
| TÜV | 9706037 | IEC 61508: SIL3 |
| UL | E175588 | UL 508, UL 61010-1 |
| CSA | LR24536 | CSA C22.2 아니요. 14 |
- 문제 해결 & 유지 관리 지침
일반적인 결함 & 솔루션
| 결함 현상 | 가능한 원인 | Inspection Steps | 솔루션 |
| Power LED flashes | Low/unstable input voltage | 1. Measure voltage between terminal A1-A2 | 1. Adjust voltage to 20.4-26.4V |
| 2. Check power adapter | 2. Replace qualified power supply | ||
| Fault LED keeps on | Short circuit or failure on input channels | 1. Check wiring of S11-S12 / S21-S22 | 1. Eliminate inter-contact short circuit |
| 2. Test after disconnecting loads | 2. Replace damaged input components | ||
| In1/In2 LED flash alternately | Short circuit between S12 and S22 | 1. Check dual-channel wiring | 1. Correct wrong wiring |
| 2. Power off and restart | 2. Ensure channel insulation | ||
| 출력 신호 없음 | 1. Input not activated | 1. Check input status | 1. Activate input signals |
| 2. Reset circuit open | 2. Verify S34-S12 reset loop | 2. Close reset circuit | |
| 3. Damaged output contacts | 3. Measure contact resistance | 3. 릴레이 교체 | |
| Accidental emergency stop | 1. 느슨한 배선 | 1. Tighten all terminals | 1. Retighten terminals |
| 2. Electromagnetic interference | 2. Add shielding measures | 2. Use shielded cables | |
| 3. Power fluctuation | 3. Install filter modules | 3. Stabilize power quality |
유지보수 일정
정기점검: Check LED status and wiring tightness monthly
정기 유지 보수: Clean terminals and inspect contact wear every 6 개월
Service life suggestion: Replace every 8~10 years (adjust according to operating frequency)
- 선택 니모닉
24V S4 model with 3NO+1NC spring terminals,
Dual-channel input with dual reset modes,
PL 전자 & SIL3 high safety performance,
22.5mm slim size saves cabinet space,
Standard safety choice for industrial control!
Overview of Cross-brand Replacement for Pilz 751104 PNOZ s4 Compact Safety Relay
For cross-brand replacement of model 751104, 핵심 차이점은 시스템 통합 호환성에 있습니다., 진단 기능, 배선 방법 및 가격대. Siemens fits full Siemens automation systems; Schneider has powerful diagnostics; Omron is ultra-compact; Phoenix Contact is cost-effective; Weidmüller supports diverse wiring; Eaton adapts well to harsh environments; Wieland is dimensionally identical to Pilz.
- 핵심 매개변수 비교표
| 상표 | 모델 | 주문 번호. | 응답 시간 | 너비 | 핵심 장점 |
| PILZ | PNOZ s4 C 24VDC | 751104 | ≤15ms | 22.5mm | Complete global certifications, flexible wiring |
| 지멘스 | 3TK2825-1BB40 | 3TK2825-1BB40 | ≤15ms | 22.5mm | Strong system integration, rich diagnosis |
| 슈나이더 | XPSUAF13AP | XPSUAF13AP | ≤15ms | 22.5mm | Expandable, powerful diagnostic performance |
| 오므론 | G9SA-321-T075 | G9SA-321-T075 | ≤15ms | 17.5mm | Ultra-slim structure |
| 피닉스 | PSR-SPP-24DC/ESD/3X1/1X2 | 2904950 | ≤15ms | 22.5mm | 높은 비용 성능, 쉬운 설치 |
| WEIDMÜLLER | SCS 24VDC P1SIL3DS MG3 | 8938670000 | ≤15ms | 22.5mm | High protection grade, 가혹한 환경에 강함 |
| EATON | MSR1270 | MSR1270 | ≤15ms | 22.5mm | 넓은 온도 범위, heavy industry oriented |
| WIELAND | SNO 4083-24V | SNO 4083-24V | ≤15ms | 22.5mm | Pin-to-pin replacement with Pilz |
- In-depth Brand Analysis & 교체 제안
2.1 Siemens 3TK2825-1BB40
핵심 장점
Seamless connection with Siemens S7 series PLC for shared diagnostic data
Supports PROFIBUS / PROFINET 통신
Built-in current monitoring for output contact fault diagnosis
IEC를 준수 61508 SIL3 & ISO에서 13849-1 PL 전자
신청 팁
✅ Prioritize for full Siemens automated projects to cut integration costs
✅ Perfect for complex safety systems requiring PLC data interaction
❌ Less cost-effective in non-Siemens systems
2.2 Schneider XPSUAF13AP
핵심 장점
Multi-level fault diagnosis with LED & text fault display
Modular design expandable up to 8 safety outputs
Built-in safety self-test function simplifies on-site commissioning
Compatible with Schneider safety bus system
신청 팁
✅ Ideal for production lines requiring detailed fault troubleshooting
✅ Best choice for multi-function integrated safety equipment
✅ Matches perfectly with Schneider Modicon PLC
2.3 Omron G9SA-321-T075
핵심 장점
Ultra-narrow 17.5mm width saves 50% cabinet space
Low power consumption ≤80mA, suitable for battery-powered devices
Built-in surge suppression with strong anti-interference capability
Economical for mass installation
신청 팁
✅ Recommended for space-limited equipment such as small robots
✅ Suitable for large-quantity layout on assembly lines
❌ Not fit for frequent manual wiring operation due to narrow terminal spacing
2.4 Phoenix Contact PSR-SPP-24DC/ESD/3X1/1X2
핵심 장점
Spring clamp wiring triples installation efficiency
Built-in electronic short-circuit protection extends contact service life
Hot-swap supported for easy on-site maintenance
Obvious price advantage with high cost performance
신청 팁
✅ Best choice for projects demanding fast installation & 쉬운 유지 보수
✅ Matches Phoenix distributed I/O systems perfectly
✅ Cost-saving option for mass-produced standard equipment
2.5 Weidmüller SCS 24VDC P1SIL3DS MG3
핵심 장점
Standard IP20, partial models reach IP40 protection level
Supports 0.2~4mm² wide-range wire connection
All-round self-diagnosis for power, input and output faults
Excellent vibration resistance for rail transit & heavy machinery
신청 팁
✅ Preferred for dusty & vibrating harsh working conditions
✅ Suitable for applications needing large cross-section wiring
✅ Unified wiring layout matched with Weidmüller terminal blocks
2.6 Eaton MSR1270
핵심 장점
Wide working temperature range: -25℃~+70℃ for extreme environments
10A high rated current can directly drive small motors
Multi safety logic: 비상 정지, safety gate, 양손 제어
Complete global safety certifications
신청 팁
✅ Suitable for outdoor and non-air-conditioned workshop equipment
✅ Widely used in heavy industry and new energy industries
✅ Perfect alternative for high-current safety control demands
2.7 Wieland SNO 4083-24V
핵심 장점
Fully consistent 22.5mm dimension with Pilz PNOZ s series for direct replacement
Identical terminal layout with no cabinet modification needed
Built-in contact welding detection function
15~20% lower price than Pilz original products
신청 팁
✅ First choice for Pilz system renovation & 비용 절감
✅ Ideal for retrofitting projects retaining original cabinet layout
✅ Preferred alternative in mechanical manufacturing industry
- Key Factors for Cross-brand Selection
| 선택 요소 | Key Points | Recommended Brands |
| 시스템 호환성 | Matching degree with existing PLC & automation platform | 지멘스 (S7), 슈나이더 (Modicon), 옴론 (Sysmac) |
| Space Limitation | Available installation space inside cabinet | 옴론 (17.5mm), Pilz/Siemens/Schneider (22.5mm) |
| Diagnostic Demand | Fault diagnosis depth | 슈나이더 (맨 위), 지멘스, 바이드뮐러 |
| Wiring Efficiency | 현장 설치 & maintenance convenience | 피닉스컨택트 (스프링 터미널), 버섯 751104 |
| Ambient Condition | 온도, 습기, vibration level | 이튼 (넓은 온도), 바이드뮐러 (방진) |
| Cost Budget | Overall project cost control | 피닉스컨택트, Wieland, 옴론 |
| Special Safety Functions | Delay output, extended output etc. | 슈나이더 (확장 가능), 이튼 (고전류) |
- Replacement Implementation Rules & 메모
4.1 Direct Replacement Feasibility
물리적 호환성: All models except Omron are 22.5mm wide for direct DIN rail mounting
전기적 호환성: Uniform 24VDC power supply and 3NO+1NC output for direct wiring replacement
기능적 호환성: All support dual-channel input and dual reset modes with identical safety standards
4.2 교체시 주의사항
- Reset Circuit: Automatic reset wiring definition varies by brand; adjust S34-S12 connection referring to official manuals
- Diagnostic Program: Reconfigure PLC diagnosis logic to adapt to new brand fault signal definition
- Certification Verification: Confirm alternative models meet all required project certifications (CE, UL, CSA etc.)
- 접점 용량: Ensure rated contact current meets actual load demand (minimum 6A consistent with 751104)
4.3 Optimal Selection Scheme
새로운 프로젝트: Select the same-brand safety relay as your automation control system for better compatibility
Renovation projects: Prioritize Wieland (dimension fully compatible) or Phoenix Contact (easy wiring)
Bulk replacement: Choose cost-effective Omron or Phoenix Contact
- Cross-brand Selection Mnemonic
Siemens excels in system integration,
Schneider leads in diagnosis function,
Omron owns the slimmest dimension,
Phoenix wins high cost attribution,
Weidmüller adapts tough condition,
Eaton fits wide temperature application,
Wieland replaces Pilz without variation,
Matching selection brings best operation!
