Allen-Bradley 440R-N23114 Safety Relay

Basic Model Definition

Catalog Number: 440R-N23114

Internal Model Code: MSR126.1T

ماركة: Allen-Bradley (روكويل أتمتة), Guardmaster Minotaur Series

Lifecycle: Active production model, manufactured in Czech Republic, standard 1-year warranty

2. Core Electrical Specifications

2.1 مزود الطاقة

الجهد المقنن: 24الخامس التيار المتناوب/تيار مستمر, operating range: 0.85~1.1× rated voltage (20.4~26.4V)

استهلاك الطاقة: 4دبليو, متوافق مع 50/60 هرتز

Terminals A1/A2: Power input

2.2 Safety Inputs (Dual-channel 4-wire with cross short-circuit detection)

2 مغلقة عادة (نورث كارولاينا) safety input paths (S11-S12 / S21-S22)

Supports dual-channel emergency stop, safety door switches and safety light curtains; built-in cross-channel short-circuit fault diagnosis

Maximum input loop resistance: ≤90Ω

2.3 Reset Circuit (S33-S34)

MSR126.1T supports automatic reset and manual reset dual modes

1. إعادة الضبط التلقائي: Short S33 and S34; outputs close automatically after faults are cleared
2. إعادة الضبط اليدوي: Connect an external normally open reset pushbutton to S33-S34; manual push is required to restore outputs

Difference from MSR126.1R: MSR126.1R only provides monitored manual reset without automatic reset function

2.4 Safety Output Contacts (Force-guided safety contacts complying with IEC 61810-3)

2 safety normally open (لا) اتصالات: 13-14, 23-24

Load Ratings:

دي سي-13: 6A/24V DC; 3A/24V DC (for frequent switching)

ايه سي-15: 5أ/250 فولت تيار متردد

وقت الاستجابة: تقريبا. 15آنسة; Recovery Time: 100آنسة

No auxiliary alarm contacts

3. Safety Certification Ratings (Top Industry Standards)

ايزو 13849-1: فئة 4 / بل ه

اللجنة الانتخابية المستقلة 61508 / اللجنة الانتخابية المستقلة 61511: سيل 3

في 954-1: Safety Category 4, فئة 0 قف

الشهادات: م, cULus, سي سي سي, BG, C-Tick

4. الأبعاد الميكانيكية & تصاعد

عرض: 22.5مم (compact DIN rail mounting)

البعد الشامل: 110مم (ح) × 75mm (د) × 22.5mm (دبليو)

وزن: 160ز

المحطات: Fixed screw terminals (non-pluggable), تصنيف الحماية IP20

درجة حرارة التشغيل: -25درجه مئوية ~ +70 درجه مئوية

5. Front Panel LED Indicator Meanings
6. PWR (أخضر): Steady on when power supply is normal
7. CH1 (أخضر): Illuminated when Channel 1 input circuit is closed
8. CH2 (أخضر): Illuminated when Channel 2 input circuit is closed

All three LEDs on → Safety output contacts closed; Any single channel open → Outputs cut off

6. سيناريوهات التطبيق النموذجية
7. Dual-channel emergency stop button circuit monitoring
8. 4-wire safety door switches (with short-circuit detection)
9. Safety light curtain / light screen safety circuits
10. Safety cut-off for machine tools, automated production lines and packaging equipment

Suitable for equipment requiring high safety ratings of PL e / SIL3

7. Series Model Comparison for Selection

8. Brief Wiring Logic
9. Connect 24V AC/DC power to terminals A1/A2
10. Wire two NC safety switches (توقف الطوارئ / door switches) in series to S11-S12 and S21-S22 respectively
11. Short-circuit S33-S34 for automatic reset; connect an NO pushbutton in series for manual reset
12. Wire the safety coil of main contactors in series across terminals 13-14 و 23-24
13. Disconnection of any safety input or cross-channel short-circuit will simultaneously open both NO outputs to cut power supply
14. Troubleshooting Guidelines
15. PWR LED off: Power phase loss, insufficient voltage or loose wiring
16. Single CH1/CH2 LED off: Corresponding channel switch open or circuit wire breakage
17. Both CH1 and CH2 LEDs lit but outputs fail to close: Cross-channel short-circuit fault; power cycle to reset, or reset circuit not shorted / reset button not pressed
18. الاتصال باللحام: تحميل الإخراج المفرط; replace contactors with higher capacity

Full Specifications of Safety Output Contacts for Allen-Bradley 440R-N23114

1. Basic Contact Structure
2. كمية & يكتب: 2 independent redundant safety normally open (لا) contacts at terminals 13-14 و 23-24; no auxiliary alarm contacts or delayed outputs
3. Contact Construction: Force-guided safety contacts (اللجنة الانتخابية المستقلة 61810-3), dual-channel redundant mechanical interlock. Single contact welding cannot maintain circuit conduction, fulfilling Category 4 / بل ه / SIL3 safety architecture
4. مواد الاتصال: AgSnO₂ silver tin oxide, مقاومة للقوس ومضادة للحام
5. Minimum Conducting Current: 10أماه (ensures reliable circuit detection by contacts)
6. Rated Load Currents (Official Standard Load Categories)

2.1 AC Load (ايه سي-15, standard load for electromagnetic contactors)

250الخامس و: 6أ (inductive-resistive load, cosφ=0.35)

UL B300 certified rating: 5أ / 250الخامس و

2.2 DC Load (دي سي-13, صمامات الملف اللولبي / DC coils)

Frequent switching at 24V DC: 3أ (standard switching rating)

Low-frequency light load (0.1هرتز) at 24V DC: الأعلى. 6A for short-term use (long-term high-frequency operation not recommended)

2.3 Continuous Thermal Current Ith (static carrying current without switching)

Maximum static continuous current per single contact: 6أ (only for permanent conduction with rare break operations)

3. التحمل الكهربائي & Operating Timing
4. التحمل الكهربائي (220الخامس و / 4أ / cosφ=0.35)

6A breaking capacity: 100,000 العمليات

4A light load: 500,000 العمليات

2. Safety Operation Timing

Response time from safety input open to contact break: ≥15 مللي ثانية

Contact pull-in recovery time after fault clearance: تقريبا. 100آنسة

3. Dielectric Withstand Voltage

Withstand voltage across open contacts: AC750V for 1 دقيقة

مقاومة العزل (DC500V test): ≥1000MΩ

4. External Protection & Wiring Limitations
5. Recommended Fuse for Output Circuit

Slow-blow fuse: 6أ; Fast-acting fuse: 10أ. Over-rated fuses are prohibited to prevent contact ablation and welding

2. Applicable Wire Gauge: 0.2~2.5mm² solid / stranded copper wires; fixed non-pluggable screw terminals
3. Maximum Operating Voltage: 250الخامس و / 30في العاصمة; overvoltage is strictly forbidden
4. Contact Performance Matching Safety Ratings

ايزو 13849-1: فئة 4, بل ه (independent cut-off via dual redundant contacts)

اللجنة الانتخابية المستقلة 61508: SIL3; single contact failure will not disable safety cut-off function

إيقاف الفئة: في 60204-1 فئة 0 hard cut-off stop

6. Quick Load Selection Table

tic Continuous | ≤250VAC / 30VDC | 6أ | Circuits with permanent conduction and minimal breaking operations |