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The Yokogawa ADV561‑P51 is a 64‑channel digital output module designed for advanced industrial control systems. It supports 24 V DC current‑sink transistor outputs with full electrical isolation, and is tailored for applications needing both timed output control (pulse‑width / time-proportional) and channel status indication.
The suffix “P51” denotes that this variant combines the pulse-width/time-proportional output capability of the “P50” family with per-channel status LEDs (unlike P50 which omits status), enabling both precision timing and real-time diagnostics of individual output channels. This makes the ADV561‑P51 especially useful in systems where operators or maintenance staff need to visually confirm which outputs are active, while still benefiting from advanced timing control.
Intended for modular I/O racks, distributed control systems (DCS), or other high‑density automation infrastructures, this module offers robust performance, precise control and diagnostic visibility.
Below are the key technical parameters for the ADV561‑P51 (based on typical values for this series):
| Parameter | Specification |
|---|---|
| Number of Output Channels | 64 |
| Output Type | 24 V DC transistor, current‑sink, fully isolated |
| Rated Supply Voltage | 24 V DC |
| External Supply Range | 20.4 – 26.4 V DC (nominal) |
| Maximum Load Current (per channel) | 100 mA |
| OFF-state Leakage Current | ≤ 0.1 mA per channel |
| ON‑State Voltage Drop | ≤ ~2 V DC |
| Response Time | ≤ 3 ms (status switching), ≤ 10 ms (for pulse or proportional mode) |
| Pulse‑Width / Time‑Proportional Range | 8 ms – 7200 s |
| Pulse-Width Resolution | 8 ms increments (with up to ~1 ms ON/OFF delay) |
| Isolation (Output → System) | ~2 kV AC withstand for 1 minute |
| Isolation (Between Channel Commons) | ~500 V AC between each 16‑channel common group |
| Status Indication | LED per channel (on/off) |
| Connection Interface | Screw‑terminal block (or dedicated compatible connector) |
| Weight | Approx. 0.32 kg |
| Dimensions | ~144 mm (W) × 100 mm (H) × 30 mm (D) |
| Redundancy | Supports dual‑redundant configuration in modular systems |
| Operating Environment | Industrial cabinet / control rack installation |
The ADV561‑P51 is especially suited for:
Large‑scale process control systems — controlling actuators, solenoids, alarms and indicators in chemical plants, refineries, and batch process facilities.
Safety and interlock circuits — providing timed control and real‑time status feedback for valves in emergency shutdown (ESD) systems.
Utilities / Power Generation — managing auxiliary systems, contactors, and alarm lamps with both timing control and status monitoring.
Water & Wastewater Treatment — driving pump stations, blowers, gates or mixers with proportioned control and visible output state.
Factory Automation — handling robotics peripherals, packaging machinery, conveyors, or timed actuator sequences where both precise output and visual confirmation are needed.
High‑availability / Redundant Systems — integrated into redundant modular racks to ensure continuous operation, with status feedback for diagnostics.
High channel count (64) in a single module reduces system complexity and saves rack space.
Precision control through pulse‑width and time‑proportional outputs, ideal for duty-cycle, timed sequencing, or proportional actuation.
Status LEDs on each channel, giving direct visual feedback, helping with commissioning, debugging, and maintenance.
Strong electrical isolation, protecting the control system from transients, ground faults and cross-channel interference.
Modular and scalable design, making it easy to expand, replace or integrate in I/O racks or DCS backplanes.
Redundancy-ready, supporting dual-modular architecture for high reliability.
Screw-terminal wiring compatibility, facilitating secure and serviceable field wiring.
Durable and industrial-grade, built for continuous operation in harsh environments.
Brand: Yokogawa
Series: ADV Digital I/O Modules
Sub‑series: ADV561 — 64-channel digital output modules with advanced timing and diagnostic options.
Here are five related models within the same series or closely associated functionality (model names bolded):
| Model | Channels | Key Features | Notes |
|---|---|---|---|
| ADV561‑P51 | 64 | Pulse-width + time-proportional + status LED per channel | Current model |
| ADV561‑P00 | 64 | Pulse-width + time-proportional, no status LED | Lower cost variant |
| ADV561‑P01 | 64 | Environmental/higher temp rating + timing control | Rugged version |
| ADV561‑P50 | 64 | Timing control (pulse, proportion), no LED | Minimalist timing variant |
| ADV551‑P51 | 32 | Pulse‑width + time-proportional + status LED (32‑channel) | For applications where 32 channels suffice |
Here are five well-used modules from Yokogawa that complement or contrast the ADV561‑P51:
| Model | Type | Channels | Application |
|---|---|---|---|
| ADV151‑P60 | Digital Input | 32 | Discrete input collection for control systems |
| ADV161‑P00 | Digital Input | 64 | High-density input module for large automation systems |
| ADV559‑P00 | Digital Output | 32 | 32-channel output module for smaller control panels |
| ADV569‑P00 | Digital Output | 64 | Alternative 64-channel output module |
| ADV869‑P01 | Mixed I/O | 32 in / 32 out | Balanced I/O module for flexible integration |
Q1: How many outputs does the ADV561‑P51 have?
A1: It has 64 discrete output channels.
Q2: What does the “P51” variant support?
A2: It supports pulse‑width modulation, time‑proportional output, and has status LEDs on each channel.
Q3: What voltage is the module designed to drive?
A3: It is designed for 24 V DC field devices.
Q4: What is the maximum current each channel can handle?
A4: Each output channel can drive up to 100 mA.
Q5: How fast can the outputs switch?
A5: Status switching is ≤ 3 ms, while timed (pulse or proportional) switching is ≤ 10 ms.
Q6: How well are outputs isolated?
A6: The output commons and system are well isolated, supporting ~2 kV AC isolation to system and ~500 V AC between commons.
Q7: How are the field wires connected?
A7: Using screw-terminal blocks (S2 type) or compatible terminal connectors.
Q8: Does this module support redundant system design?
A8: Yes, it supports dual-redundant modular architectures for high-availability systems.
Q9: What is the approximate size and weight of the module?
A9: Approx. 144 mm × 100 mm × 30 mm, and weighs about 0.30 kg.
Q10: In what applications is the status LED feature particularly useful?
A10: It is very useful in commissioning, troubleshooting, and maintenance where visual confirmation of each channel’s state is important.
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