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Yokogawa SAI533-H53
Product Type: Analog Input Card (High-Density)
Product Introduction:
The SAI533-H53 is a 16-channel analog input module for Yokogawa’s CENTUM VP and CENTUM CS distributed control systems. It provides high-density analog signal acquisition for large-scale process control applications. The “H53” suffix specifies the input signal type as 1–5V DC.
Detailed content
Model Code Breakdown:
- SAI533 — Analog Input Module, 16 channels, CENTUM VP/CS
- H53 — Input type: 16 channels of 1–5V DC input
Technical Specifications:
| Parameter | Value |
|---|---|
| Number of Channels | 16 channels |
| Input Signal | 1–5V DC |
| Input Impedance | ≥ 1 MΩ |
| A/D Resolution | 16-bit |
| Sampling Rate | 100 ms per channel (16 channels = 1.6 seconds total) |
| Accuracy | ±0.1% of F.S. |
| Isolation | Channel-to-channel isolation, 500 VDC |
| Communication | Vnet/IP (CENTUM VP), Ethernet (CENTUM CS) |
| Operating Temperature | 0°C to +55°C |
| Power Supply | 5 VDC (bus-powered from I/O base) |
| Dimensions | Standard CENTUM I/O card size: 25 x 160 x 120 mm |
| Certifications | CE, FM, CSA |
Functional Features:
- 16 independent analog input channels with per-channel scaling and engineering units
- High input impedance (≥ 1 MΩ) minimizes loading on voltage-output transmitters
- Channel diagnostics: Open circuit, short circuit, out-of-range detection
- Linearization: Custom linearization tables per channel
- Retransmission capability via separate output module
Structural Features:
- Standard CENTUM VP/CS I/O card format
- Plugs into I/O base unit (Vnet/IP bus)
- LED indicators per channel group: Normal, Alarm, Fault
- Software-configurable (no DIP switches required)
Applicable Industries:
- Oil refineries
- Chemical plants
- Power stations
- Water and wastewater treatment
- Large-scale process plants using CENTUM VP/CS
Installation Requirements:
- Insert into designated slot in CENTUM VP/CS I/O base unit
- Use shielded twisted-pair cable for all 1–5V inputs
- Keep signal cables separated from power cables by ≥ 200 mm
- Verify input range matches 1–5V DC configuration before commissioning
Usage Precautions:
- Do not apply voltage > 5.5V DC to any input channel (risk of damage)
- Verify input impedance of the field transmitter is compatible (≥ 1 MΩ recommended)
- Perform annual calibration verification as part of preventive maintenance
- Do not exceed the maximum channel count per module (16 channels)
