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Yokogawa UR1AG3-S1-100N-1LD-2TA-N/CN
Product Series: UR1AG3 — ProSafe-RS Series SIL3 Certified Safety Instrumented System
Product Overview:
The UR1AG3-S1-100N-1LD-2TA-N/CN is a single-CPU safety programmable logic controller designed for Safety Instrumented System (SIS) applications requiring SIL3 (Safety Integrity Level 3) certification per IEC 61508 and IEC 61511 standards. This unit integrates local I/O and communication capabilities into a compact rack-mounted chassis.
Detailed content
Technical Specifications:
| Parameter | Specification |
|---|---|
| CPU Configuration | Single CPU (S1) |
| Power Supply | 100-240 VAC, 50/60 Hz (100N) |
| Local Digital Input | 1 module — 1LD (8-channel 24VDC digital input) |
| Analog Output | 2 modules — 2TA (4-20mA DC, 4 channels each) |
| Communication | N/CN — Redundant/Non-redundant Ethernet communication |
| Safety Rating | SIL3 / SIL2 (IEC 61508), SIL3 (IEC 61511) |
| Processing Speed | 0.5 ms per logic scan (typical) |
| Memory Capacity | Program memory: 256 KB; Data memory: 128 KB |
| Operating Temperature | 0°C to +55°C (+32°F to +131°F) |
| Humidity Range | 5% to 95% RH (non-condensing) |
| Dimensions (W×H×D) | Approximately 150 × 140 × 90 mm (chassis only) |
| Weight | Approximately 1.5 kg (chassis with modules) |
| Certifications | ATEX, IECEx, FM, CSA, TÜV |
Functional Features:
- Built-in self-diagnostics with online testing capability
- Triple Modular Redundancy (TMR) CPU architecture for fault tolerance
- Hot-swap capability for I/O modules during operation
- Fail-safe output forcing for emergency shutdown applications
- Online programming and modification without system shutdown
- Event logging with timestamp accuracy of ±1 ms
Applicable Industries:
- Oil & Gas (upstream, midstream, downstream)
- Chemical & Petrochemical processing
- Power Generation (thermal, nuclear, combined cycle)
- Pharmaceutical manufacturing
- Water & Wastewater treatment
- Mining & Minerals processing
Installation Requirements:
- Mount in a DIN rail-compatible cabinet or control panel
- Maintain minimum 100 mm clearance above and below for ventilation
- Ensure earth grounding with resistance < 4 Ω
- Use shielded twisted-pair cables for all I/O connections
- Separate safety and non-safety wiring by minimum 50 mm or use barrier trays
Usage Precautions:
- Never mix SIL-rated and non-SIL-rated modules in the same safety loop
- Perform proof testing at intervals not exceeding 12 months
- Maintain ambient temperature below +55°C at all times
- Replace batteries (if applicable) within 5 years of manufacture date
- Follow IEC 61511 lifecycle management requirements for all modifications
