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Yokogawa SD1075B02-2PO
Product Series: SD1075 — ProSafe-RS Series Analog I/O Module
Product Overview:
The SD1075B02-2PO is a 4-channel analog output module from the ProSafe-RS Safety Instrumented System. The B02-2PO variant designation indicates a specific configuration providing 2-channel pulse output capability in addition to standard 4-20mA analog outputs. This module delivers SIL2/SIL3 certified output signals for final control elements in safety loops.
Detailed content
Technical Specifications:
| Parameter | Specification |
|---|---|
| Module Type | 4-channel analog output (4-20mA DC) |
| Pulse Output Channels | 2 channels (2PO) |
| Output Resolution | 16-bit D/A converter |
| Output Accuracy | ±0.1% of span (typical) |
| Output Load Resistance | 0 to 600 Ω (4-20mA mode) |
| Pulse Output Type | Open-collector transistor, 30VDC max, 50mA max |
| Pulse Frequency | 0 to 1000 Hz (adjustable) |
| Isolation Voltage | 1500 VAC (channel-to-channel, channel-to-backplane) |
| Safety Rating | SIL2 / SIL3 (IEC 61508, IEC 61511) |
| Operating Temperature | 0°C to +60°C (+32°F to +140°F) |
| Power Consumption | < 3.5 W per module |
| Dimensions (W×H×D) | 25 × 120 × 120 mm (approx.) |
| Weight | Approximately 0.2 kg |
Functional Features:
- Dual-redundant output drivers for SIL3 applications
- Fail-safe output states configurable per channel (High/Low/Last Value)
- Online calibration without removing module from rack
- Diagnostic coverage > 99% for output channel failures
- Short-circuit protection on all output channels
- Loop break detection with alarm notification
Applicable Industries:
- Oil & Gas — Emergency shutdown valve (ESDV) control
- Chemical Processing — Safety relief valve actuation
- Power Generation — Turbine trip signal output
- Refineries — Fire and gas system actuation
Installation Requirements:
- Install in ProSafe-RS compatible chassis/rack
- Use shielded twisted-pair cables, shield grounded at one end only
- Maintain minimum 30 mm spacing between modules for heat dissipation
- Connect loop power supply per module specifications (24VDC nominal)
Usage Precautions:
- Do not exceed 600 Ω total loop resistance in 4-20mA mode
- Verify pulse output voltage rating before connecting to solenoid valves
- Perform output proof test at recommended intervals (≤ 12 months)
- Never bypass safety diagnostics or disable fault detection features
- Ensure proper termination of unused channels to prevent floating signals
