Technical Overview
The Yokogawa ADV159-P01/S1 is a 32-channel isolated DC digital input module purpose-built for CENTUM VP and CS 3000 DCS environments. It reliably acquires 24 V DC signals from field-mounted pushbuttons, proximity sensors, and limit switches. Optical isolation separates input circuits from the system backplane to eliminate ground-loop interference. The pressure-clamp terminal block accepts solid or stranded wires directly without requiring additional adapters. Onboard filtering circuits reject electrical noise and contact bounce for stable reading acquisition.
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Model | ADV159-P01/S1 |
| Product Type | Isolated DC Digital Input Module |
| Channel Count | 32 discrete input points |
| Rated Input Voltage | 24 V DC (sink/source compatible) |
| ON-State Threshold | 18.0 V DC to 26.4 V DC |
| OFF-State Threshold | -3.0 V DC to 5.0 V DC |
| Nominal Input Current | 4.1 mA per channel (±20%) |
| Response Time | ≤ 8 ms (with built-in debounce) |
| Isolation Withstand | 1500 V AC between field and system |
| Insulation Resistance | ≥ 10 MΩ at 500 V DC |
| Current Consumption | 400 mA maximum at 5 V DC |
| Terminal Type | 34-pin pressure clamp (M3.5) |
| Unit Weight | Approximately 0.3 kg |
| Physical Dimensions | 130 mm × 120 mm × 30 mm |
Engineering Advantages and Application Notes
The ADV159-P01/S1 offers 32 input channels within a single slot to maximize I/O density per rack. Each channel consumes only 4.1 mA, keeping total power draw well within system supply limits. The 8 ms response time provides fast status updates for interlock logic and sequence-of-events recording. Filtering circuits eliminate contact bounce issues from mechanical switches and relays in the field. The P01 suffix denotes enhanced diagnostic capabilities for advanced fault detection and channel monitoring. The S1 variant includes conformal coating for protection against moisture and airborne contaminants in harsh environments. Status LEDs on the front panel light up for each active channel, accelerating field troubleshooting. Hot-swap functionality permits module replacement without taking the entire control system offline.
Details
| Weight | 0.7 kg |
|---|---|
| Dimensions | 2.5 × 20.3 × 15.2 mm |
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