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SRB-E-402EM - Emergency Stop Dual-Contact Relay - SS IP65 SIL2 Industrial Safety
| MOQ: | 1 |
| Price: | USD 100-10000/Piece |
| Standard Packaging: | 50*50*50mm |
| Delivery Period: | 3-7 |
| Payment Method: | T/T |
| Supply Capacity: | 1/piece in stock |
1. Modular Safety Control Platform Overview
The Schmersal SRB-E-402EM is an expandable safety relay system engineered for complex industrial safety architectures requiring multi-circuit monitoring and diagnostics. Featuring a stainless steel IP67-rated base unit, this platform supports up to 8 expansion modules via a rugged backplane bus. Compliant with ISO 13849-1 PL e (Category 4) and IEC 62061 SIL 3, its modular design consolidates monitoring for E-stops, light curtains, guard locks, and safety scanners. The integrated 2.8" TFT color touchscreen provides real-time diagnostics with intuitive navigation, while operating within 24V DC ±10% at -25°C to +60°C. Built for demanding environments like automotive assembly and pharmaceutical plants, it withstands oils, vibrations (50g IEC 60068-2-27), and high-pressure washdowns while maintaining SIL 3 integrity across all channels.
2. Core Technical Specifications
- Safety Ratings: SIL 3 (PFHD: 1.4×10⁻⁹/h), PL e (DCavg=99.3%)
- Electrical:
- Supply Voltage: 24V DC (19.2–28.8V)
- Base I/O: 4 dual-channel inputs + 8 safety outputs (4× 6A relays + 4× 0.5A semiconductors)
- Expandability: 8 slots for EM series modules (e.g., EMG-01 guard monitoring)
- Communication: PROFIsafe/Fail-safe over EtherCAT (FSoE) via expansion card
- Environmental: IP67 base / IP20 modules, 4kV inter-circuit isolation
- Diagnostics: 2.8" TFT (320×240 px) with waveform visualization, 5,000-event log
- Mechanical: 70×125×130mm base dimensions, TH35 DIN rail mounting
- Certifications: UL 508, IECEx Ex ec IIIC T80°C Dc, DNV-GL Marine
3. Industrial Applications
This system manages safety across high-risk processes:
- Automotive Body Shops: Coordinated E-stops across 300m conveyors with 50+ safety doors
- Robotic Welding Cells: Multi-zone monitoring with light curtain muting protocols
- Pharmaceutical Facilities: Hygienic guard locking in cleanrooms requiring GMP compliance
- Packaging Lines: Synchronized safety for filler/capper/labeler modules with CIP washdown
- Power Substations: HV cabinet access control with authorization levels
- Plastic Injection: Hydraulic safety + mold guard interlocking in one system
- Material Handling: AS/RS crane safety integrating light grids and floor scanners
- Metal Stamping: Cascaded E-stop networks across press transfer lines
4. Functional Advantages
- Centralized Safety Management:
- 85% panel space reduction vs. discrete relays
- Live system diagnostics with color-coded TFT alerts
- Seamless Integration:
- Pre-configured modules for guard doors (EMG-01), muting (EMG-03)
- PROFIsafe integration for Siemens/Phoenix Contact PLCs
- Predictive Maintenance:
- Contact cycle counters with wear prediction
- Real-time current draw monitoring per circuit
- Rapid Troubleshooting:
- On-screen wiring diagrams for fault locations
- QR code generation for service documentation
- Flexible Configuration:
- Logic editor supports AND/OR/Time delays (0.01–999s)
- User permissions with RFID access control
- Lifecycle Durability:
- Gold-plated backplane contacts (>250k insertions)
- Conformal coated PCBs for humidity resistance
5. Safety Architecture & Operation
Multi-Layer Safety Sequencing:
- Input Validation:
- Dual-channel cross-monitoring with <2ms discrepancy detection
- Automatic sensor debouncing for vibration-prone environments
- Expansion Control:
- Backplane handshaking verifies module integrity every 10ms
- Hot-swap protocol maintains SIL 3 during replacements
- Output Management:
- Force-guided relays with physical NO/NC monitoring
- Semiconductor outputs signal diagnostics via PWM
- PROFIsafe Integration:
- Safety Telegram monitoring with 15ms cycle times
- SafeNode parameterization via TIAPortal
- Diagnostic Management:
TFT Display Indication Green Background All circuits operational Yellow Waveform Intermittent signal fault Red Flashing Border Critical safety fault Blue Lock Icon Authorization required - Event replay function reconstructs pre-fault sequences
Startup Self-Test Routine:
- Contact gap verification (≥0.5mm)
- Processor/RAM checksum validation
- Expansion module enumeration check
- Fieldbus communication diagnostic scan
| Parameter | Specification/Value |
|---|---|
| Product Type | ATEX/IECEx Certified Emergency Stop (Twist Release) |
| Series | SRB-E Ex-Protected Series |
| Actuator Design | Ø 60 mm Mushroom Head Red (RAL 3000) with laser-etched ⚠️ symbol |
| Contact Configuration | 2 NC (Safety) + 1 NC/1 NO (Aux) • Safety: Terminals 13-14, 21-22 • Auxiliary: 31-32 (NC), 41-42 (NO) |
| Explosion Protection | ATEX: II 2G Ex db IIC T6 Gb / II 2D Ex tb IIIC T80°C Db IECEx: Ex db IIC T6 Gb / Ex tb IIIC T80°C Db |
| Safety Level | Cat. 4 / PL e (EN ISO 13849-1) Stop Category 0 (IEC 60204-1) |
| Protection Rating | IP66/IP68 (Frontal) IP65 (Cable entry) |
| Electrical Ratings | • Voltage: 24–250V AC/DC (Ex-rated) • Current: 10A AC-15 / 6A DC-13 (Ex derated) • Max. Power: 2500 VA (gas) / 100W (dust) |
| Mechanical Life | ≥ 1,500,000 cycles |
| Electrical Life | 100,000 cycles (at 6A AC) |
| Actuation Force | ≥ 150 N (Explosion-proof mechanism) |
| Reset Mechanism | Stainless Steel Key-operated Twist Release Integrated torque limiter |
| Housing Material | Stainless Steel (316L) Electropolished surface |
| Contact Chamber | Hermetically Sealed Glass-metal feedthroughs |
| Terminal Connection | Ex-e Increased Safety Terminal Chamber Max. wire: 2.5 mm² Torque: 0.6–0.8 Nm |
| Operating Temperature | -20°C to +60°C (Gas) -40°C to +75°C (Dust) |
| Surface Temperature | T6 Rating (≤85°C under fault) |
| Mounting | Flameproof Joint (Ex db) Panel Cutout: Ø 30 mm Depth: 92 mm |
| Certifications | ATEX, IECEx, UKEX, EAC Ex, INMETRO, UL HazLoc, cCSAus |
| Compliance Standards | EN 60079-0/1/7/31, IEC 60079-11, EN/IEC 60947-5-1 |
| Safety Features | • Triple-sealed shaft penetration • Pressure-resistant chamber (1.5x design pressure) |
Packaging & Shipping
Company Information
Xiamen ZhiCheng Automation Technology Co., Ltdit is a leading global supplier of control system components. We specialize in control systems and drives.
With many years of experience in the industrial sector, we consistently deliver the highest quality of spare parts.which make sure that all this jobs are
perfectly.
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