Siemens 3SE5112-0CH50 Limit Switch

ชุด: SIRIUS 3SE5 mechanical position ลิมิตสวิตช์ (standard position switch, NOT positive-opening safety switch)

✅ Model Code Explanation

3SE5: SIRIUS family of mechanical position switches

3SE51: Metal enclosure, 40ความกว้างมม, สอดคล้องกับ EN 50041

12: 1เลขที่ + 1NC snap-action contacts

0CH50: Adjustable-length metal lever with φ19mm plastic roller; rotary actuator reversible for left/right mounting

📋 Core Technical Specifications

📌 Product Features

1. Modular construction: Composed of base housing, contact module, rotary actuator head and adjustable lever. Components can be replaced individually. Part numbers: Base 3SE5112-0CA00, actuator head 3SE5000-0AH00, lever 3SE5000-0AA50, contact block 3SE5000-0CA00
2. Bidirectional reversal: Rotary head can be switched left or right to adapt to forward/reverse stroke triggering of equipment
3. Adjustable lever length, convenient for fine-tuning trigger position on site
4. Impact-resistant metal housing, suitable for machine tools, conveyor lines and automation sites
5. ⚠️ ประกาศสำคัญ: No positive opening function. NOT permitted for safety protection circuits (เช่น. safety gate interlock). Only for general position detection, travel limit and home position feedback signals.

🛠️ Typical Application Scenarios

Conveyor travel limit, machine tool stroke limit, automation frame position detection, mechanical trigger for silo material level, general position feedback of doors (non-safety interlock)

🔁 Substitute & การอ้างอิงการเลือก

Same series alternative (different actuator): 3SE5112-0CH01 (fixed-length lever)

การอ้างอิงทางเลือกในประเทศ: อร่อย, ชินท์, Omron WL series roller lever limit switches (verify contact capacity, mounting dimensions and protection rating)

Model for safety applications: 3SE53xx series (positive-opening safety switches)

⚠️ Installation & หมายเหตุการบำรุงรักษา

1. Mounting holes comply with EN50041 standard; reserve buffer stroke for the lever to prevent roller damage from impact
2. Properly seal the M20 cable gland to maintain IP67 protection
3. Snap-action contacts are not suitable for high-frequency low-level signals; intended for power-type switching signals
4. Periodically inspect lever wear and screw tightness; worn rollers allow replacement of actuator assembly alone, full switch replacement unnecessary

Application Scenarios of ซีเมนส์ 3SE5112-0CH50

⚠️ Important Premise: Standard position switch without positive-opening contacts. Cannot be used for safety gates, safety circuits or emergency stop safety interlock. Only for general position feedback, travel limit and process trigger signals. IP66/IP67, metal housing with adjustable lever, suitable for dusty and humid industrial environments.

1. สายพานลำเลียง & โลจิสติกส์อัตโนมัติ (ที่พบบ่อยที่สุด)
2. Belt / สายพานลำเลียงแบบลูกกลิ้ง: Hard mechanical limit at head and tail to prevent trolley/stop block overtravel; position signal sent to PLC for deceleration, stop and direction change
3. Transfer carts, shuttle trolleys: Home position locating and end-position detection
4. การเรียงลำดับ & สายการบรรจุ: Box-in-place trigger, stop plate position feedback
5. ลิฟท์ & vertical conveying equipment: Upper/lower limit signals for lifting platforms (general limit only; separate safety switch required for safety protection circuit)
6. เครื่องมือกล & อุปกรณ์แปรรูป
7. เครื่องซีเอ็นซี, ศูนย์เครื่องจักรกล: Hard mechanical limit for worktable slides and saddles (backup for soft limit), travel end detection for X/Y/Z axes
8. Press brakes, shears: Slide / material rack in-position signal and stroke end feedback (not for safety protection)
9. Woodworking machinery, เครื่องบด: Mobile worktable in-position detection and process switching trigger signals

III. ระบบอัตโนมัติแบบกำหนดเอง & Assembly Equipment

1. Jigs & ติดตั้ง: Clamp closed/open position feedback
2. Servo slides, cylinder-driven mechanisms: Mechanical end limit and home position confirmation
3. Tooling around robots: Silo baffle and discharge mechanism position detection

ข้อได้เปรียบ: 0~100mm adjustable lever length, reversible actuator head for easy on-site fine-tuning of trigger position

1. Material Storage & Silo Applications
2. Silo gates, flap valves: Full-open / full-closed position feedback
3. Warehouse mechanical level detection: Material push plate in-position detection
4. ยก, ประตู & เครื่องจักรก่อสร้าง (General Position Signals)
5. Overhead cranes, small hoists: General travel limit for cross/longitudinal carriages (safety ultimate limit must use safety-type switches)
6. Factory motorized sliding doors, roller shutters: Full-open / full-closed position feedback (non-safety interlock)
7. ไฮดรอลิก / ตัวกระตุ้นแบบนิวแมติก: Cylinder end position detection
8. Other General Industrial Applications

การพิมพ์ & เครื่องจักรสิ่งทอ: Roller frame and moving frame stroke detection

การบำบัดน้ำ & environmental equipment: Baffle and discharge mechanism position signals

General position indication for equipment access doors (⚠️ NOT for safety interlock door switches; safety gates require 3SE53xx positive-opening safety switches)

✅ Selection Checklist (การหลีกเลี่ยงหลุมพราง)

1. Adjustable metal lever + φ19 plastic roller, suitable for lateral impact from moving stop blocks; long lever preferred where installation space is ample and trigger position fine adjustment is required
2. 1NO+1NC snap-action contacts for PLC DI position signals, AC15/DC13 24V 3A
3. Environmental suitability: -25℃~+85℃, IP67, impact-resistant metal housing, ideal for dusty and humid workshops
4. ❌ แอปพลิเคชันต้องห้าม: Safety gate interlock, emergency stop safety circuits, ISO13849 safety-related circuits (use 3SE53xx positive-opening safety position switches for these cases)

Voltage Parameters of Siemens 3SE5112-0CH50

This is a mechanical limit switch with no internal power supply required, it is merely passive contacts. Below are the permissible rated switching voltages for contacts:

1. พิกัดแรงดันไฟฟ้าฉนวน Ui: 400วี (maximum withstand voltage)
2. AC-15 AC Operating Voltage (โหลดอุปนัย)

24วีและ / 125วีและ / 240วีและ / 400วีและ

400วีและ: 4ก; 24/125/240วีและ: 6ก

3. DC-13 DC Operating Voltage (โหลดอุปนัย, most common for PLC DI)

24ในดีซี: 3ก (widely used for PLC digital input)

125ในดีซี: 0.55ก

250ในดีซี: 0.27ก

400ในดีซี: 0.12ก

✅ Engineering Selection Notes

PLC DI digital signal: ดีซี24วี, เข้ากันได้อย่างสมบูรณ์, the most common usage of this model

Also applicable for AC220V circuits to switch high-power loads

หน้าสัมผัสแบบแห้งแบบพาสซีฟ, no power supply needed for the switch body

Mounting Dimensions of Siemens 3SE5112-0CH50 (EN50041 40mm Metal Housing)

อ้างอิง: Siemens original datasheet; dimensions separated for housing without lever and full assembly with lever

1. Outer Housing Dimensions (excluding lever)

ความกว้าง: 40.5 มม

ความสูง: 85.7 มม

ความลึก: 37.3 มม

2. Mounting Fixing Holes (critical hole dimension, EN50041 standard)

Vertical center distance between two fixing holes: 61 มม

เส้นผ่านศูนย์กลางรูยึด: 5.3 มม (suitable for M5 bolts)

Distance from hole to side edge: 12.5 มม

Mounting orientation optional, 4 รูยึด (2 สูงสุด, 2 ด้านล่าง). Standard 40mm footprint, mounting holes fully interchangeable for all 3SE51xx base units.

3. Actuator Lever Dimensions (adjustable metal lever + φ19 roller)

Roller diameter: φ19 mm (ลูกกลิ้งพลาสติก)

Lever adjustment range: นาที 44 มม, สูงสุด 109 มม (from rotary head center to roller center)

Overall maximum total length with lever fully extended: 192 มม

Actuator head reversible 180° left/right

4. รายการเคเบิล

รายการเคเบิลเส้นเดียว: M20×1.5

5. Key Engineering Remarks
6. Mounting plate cutout: Fixing hole center distance 61mm, hole φ5.3, fasten with M5 bolts
7. Adjustable lever: Reserve sufficient buffer stroke. Stop block impact direction must be perpendicular to roller; do not forcibly bend laterally to avoid shaft damage
8. Housing depth 37.3mm; reserve space for rear cover and cable gland during backplate mounting; M20 gland exits from bottom of housing
9. Base mounting holes common across 3SE51xx series; no re-drilling required when replacing actuator head