Technical Overview
The Yokogawa ADV159 is a 32-channel isolated DC digital input module compatible with CENTUM VP and CS 3000 DCS systems. It accepts 24 V DC signals from field sensors, pushbuttons, and limit switches for reliable status monitoring. Optical barriers safeguard the system logic from electrical surges and common-mode noise on field wiring. The pressure clamp terminal block supports direct cable connections without intermediary relay boards. This module provides onboard self-diagnostics to verify channel health and operational integrity.
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Model | ADV159 (with suffix codes: -S00, -S01, -S10, -S11, -SE0, -SE1) |
| Type | Isolated DC Digital Input Module |
| Number of Channels | 32 discrete inputs |
| Rated Voltage | 24 V DC (sink/source capable) |
| ON-State Voltage Range | 18.0 V DC to 26.4 V DC |
| OFF-State Voltage Range | -3.0 V DC to 5.0 V DC |
| Input Current per Channel | 4.1 mA nominal (±20%) |
| Status Input Response Time | ≤ 8 ms (with built-in debounce filtering) |
| Withstanding Voltage | 1500 V AC between field input and system |
| Insulation Resistance | ≥ 10 MΩ at 500 V DC |
| Power Consumption | 400 mA maximum at 5 V DC |
| Terminal Block | 34-pin pressure clamp (M3.5 screws) |
| Weight | Approximately 0.3 kg |
| Dimensions | 130 mm × 120 mm × 30 mm (W × H × D) |
Performance and Engineering Benefits
The ADV159 processes 32 inputs simultaneously and updates each channel every 8 milliseconds. This rapid scan rate ensures timely detection of momentary switch closures and limit switch activations. The onboard filtering removes contact bounce noise, preventing false triggering in noisy industrial environments. This module can replace multiple interposing relays, significantly reducing cabinet space and wiring labor. The 1500 V AC isolation eliminates ground loop problems and protects the controller from field faults. The pressure clamp termination accepts 0.2 to 2.5 mm² wires, simplifying field cable preparation and connection. Status LEDs for each channel provide immediate visual feedback for troubleshooting and commissioning activities. The hot-swappable design allows online module replacement without disrupting system operations.
Details
| Weight | 0.7 kg |
|---|---|
| Dimensions | 2.5 × 20.3 × 15.2 mm |
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