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Yokogawa UR1BG3-008-0102-008/Z
Product Overview:
The UR1BG3-008-0102-008/Z is a safety-rated I/O interface module for the Yokogawa ProSafe-RS Safety Instrumented System. The configuration 008-0102-008/Z indicates: 008 = 8-channel digital input, 0102 = specific module variant/channel grouping, 008/Z = additional 8-channel configuration with zone-specific termination. This module provides SIL3-certified digital input signal acquisition from field safety devices (emergency stop buttons, limit switches, gas detectors).
Detailed content
Technical Specifications:
| Parameter | Specification |
|---|---|
| Module Type | Safety Digital Input Module |
| Number of Channels | 8 channels (008) |
| Input Type | Dry contact (N.O./N.C.), 24VDC, 48VDC (configurable per channel) |
| Input Voltage Range | 12-48 VDC (dry contact) or 18-48 VDC (wet contact) |
| Input Current | < 5 mA per channel (wet contact), 0 mA (dry contact) |
| Debounce Time | 20 ms (configurable: 10-100 ms) |
| Diagnostic Coverage | > 99% (wire break, short circuit, stuck-at detection) |
| Safety Rating | SIL3 (IEC 61508), SIL3 (IEC 61511) |
| Isolation Voltage | 1500 VAC (channel-to-channel, channel-to-backplane) |
| Operating Temperature | 0°C to +60°C (+32°F to +140°F) |
| Power Supply | 24VDC (from safety bus) |
| Power Consumption | < 2.0 W (total module) |
| Dimensions (W×H×D) | 25 × 120 × 120 mm (approx.) |
| Weight | Approximately 0.2 kg |
| Certifications | ATEX, IECEx, FM, CSA, TÜV |
Functional Features:
- Per-channel diagnostics: Wire break, short to positive, short to negative, stuck-at-0, stuck-at-1
- Cross-monitoring between redundant channels for SIL3 compliance
- Fail-safe default state configurable per channel (Normal Open / Normal Closed)
- LED status indicators per channel group (4 LEDs per group of 8)
- Online insertion/removal supported
- Event timestamp accuracy: ±1 ms
Material Composition:
- Housing: Flame-retardant PBT plastic (UL94 V-0)
- Terminal blocks: Phosphor bronze, tin-plated
- PCB: FR-4 with conformal coating (IP20 protection)
- Connectors: Pluggable terminal blocks for field wiring
Applicable Industries:
- Oil & Gas — Emergency shutdown (ESD) button input, gas detector status
- Chemical Plants — Safety interlock monitoring (door switches, level switches)
- Power Generation — Turbine protection system inputs
- Mining — Personnel safety system inputs (man-down, evacuation switches)
Installation Requirements:
- Install in ProSafe-RS compatible I/O rack (UR1BG3 bus)
- Use shielded twisted-pair cable for all digital input connections
- Shield ground at DCS end only
- Maintain 30 mm spacing between modules for ventilation
- Connect field device common (0V) to module common terminal
Usage Precautions:
- Never exceed 48VDC on any input channel
- Dry contact inputs must not have external power applied
- Perform proof test at intervals ≤ 12 months per IEC 61511
- Replace module if diagnostic coverage degrades below 99%
- Document all channel configurations in safety lifecycle management system
