ADV851-P50 Yokogawa 32-Channel Digital I/O Module
Manufacturer: Yokogawa
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Part Number: ADV851
Condition：New with Original Package
Product Type: Digital I/O Cards
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Country of Origin: Japan
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
Yokogawa ADV851-P50 Digital I/O Module
Configured for flexible discrete signal processing in CENTUM VP systems, the Yokogawa ADV851-P50 (ADV851 Digital I/O Module) provides direct physical/electrical execution across 32 isolated digital input and output channels.
Suffix Breakdown & Model Matrix
The suffix alphanumeric codes define the onboard functional capabilities, hardware options, and design revisions for the physical module assembly:
- ADV851: Base model code for a 32-channel discrete digital I/O hardware card (16 digital inputs and 16 digital outputs).
- -P: Incorporates advanced pulse-width generation logic and pushbutton edge-detection routines.
- 5: Non-explosion-proof hardware specification designed for standard control cabinet installations.
- 0: Basic type execution ensuring native system firmware and backplane bus compatibility.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | ADV851-P50 |
| Brand | Yokogawa |
| Origin | Japan |
| Weight | 0.50 kg (1.10 lbs) |
| Dimensions | 2.5 cm x 2.5 cm x 2.5 cm (1.0 in x 1.0 in x 1.0 in) |
| Operating Temp | -20 to 60 deg C |
| Power Consumption | 450 mA at 5 VDC |
| Input Channels | 16 channels (dry contact or 24 VDC voltage input) |
| Output Channels | 16 channels (24 VDC transistor outputs) |
| Maximum Output Rating | 30 VDC, 100 mA per channel |
| Input Response Time | 8 ms or less |
| Output Response Time | 16 ms or less |
| Pulse Output Range | 8 ms to 7200 s (8 ms resolution) |
| Isolation | Optical galvanic isolation between channels and system |
| Cable Interface | Dedicated KS2 interface cable assembly |
| System Redundancy | Supports dual-redundant pair configuration |
Process Control Signal Processing
This module features individual channel-to-system optical isolation to prevent electrical noise and ground loop currents from propagating to the control backplane. Combining 16 status inputs and 16 transistor outputs within a single assembly, the module processes both field contact status signals and discrete control outputs operating under 24 VDC loop conditions. The onboard timing generator supports configurable output pulse widths ranging from 8 ms up to 7200 s with 8 ms timing resolution. Low temperature drift and fast internal switching logic allow real-time synchronization with external interlocks, limit switches, and switching devices integrated into broader 4-20 mA HART loop protocol plant architectures.
Frequently Asked Questions
Q: What cable assembly connects the ADV851-P50 module to external interface terminal boards?
A: The module relies on a dedicated KS2 multi-conductor interface cable to establish low-resistance signal connections between card edge terminals and field termination panels.
Q: How does the pulse output feature function on the 16 transistor output channels?
A: Internal firmware permits programmers to assign exact ON durations from 8 ms to 7200 s per channel, enabling precise timed actuation without adding software timing overhead to the main controller CPU.
Field Installation Guidelines
Slide the module into its assigned slot on the FIO baseplate, pushing until top and bottom locking levers snap firmly into place. Connect the KS2 interface cable, tightening the retaining screws to establish solid contact and guard against vibration-induced displacement. Route field wiring for 24 VDC inputs and transistor outputs separately from high-voltage AC power lines to limit electromagnetic interference. Ground all cable shield conductors directly to a single-point earth bus bar at the panel baseplate. Maintain adequate ventilation around the cabinet rack to ensure local ambient temperatures remain within the -20 to 60 deg C operating threshold.