Thirty-two load commands
Each accepted controller bit operates one current-sink output; the external field supply provides the load energy rather than the module backplane.
YOKOGAWA · CENTUM ENGINEERING RECORD
Yokogawa ADV557-S50 S1 / ADV559-P00 S1 | Isolated Digital Output Modules
CENTUMI/OMODULE
01
Product Profile
Yokogawa ADV557-S50 S1 and Yokogawa ADV559-P00 S1 are isolated digital output modules for CENTUM I/O nodes. ADV557-S50 S1 provides thirty-two 24 V DC current-sink outputs through a pressure-clamp terminal interface, while ADV559-P00 S1 provides thirty-two outputs in the compatible-ST mechanical and signal arrangement.
Field load current leaves the external 24 V DC supply, passes through the connected load and is switched to the return by Yokogawa ADV557-S50 S1. Yokogawa ADV559-P00 S1 performs the same controller-to-load switching role for ST4-compatible replacement wiring, preserving the connector organization expected by that installed system.
The external supply and common structure are part of the output circuit for Yokogawa ADV557-S50 S1 and Yokogawa ADV559-P00 S1. A load fault is therefore investigated against the affected channel group, external feeder and return path before the controller command or module is changed.
02
Performance Specifications
| TECHNICAL ITEM | ADV557-S50 S1 | ADV559-P00 S1 |
|---|---|---|
| Brand | Yokogawa | |
| Model | ADV557-S50 S1 | ADV559-P00 S1 |
| Nameplate Suffix | S1 (commonly seen) | S1 |
| Product Name | 32-channel isolated digital output module | 32-channel isolated digital output module for compatible ST |
| Country | Japan | |
| Output Channels | 32 | |
| Output Method | Current sink | |
| Rated Field Supply | 24 V DC | |
| Supply Range | 20.4 to 26.4 V DC | |
| Maximum Load | 100 mA per channel at 26.4 V DC | |
| Isolation Grouping | Common minus every 16 channels | ST4-compatible grouped interface |
| Withstand Voltage | 2000 V AC signal-to-system; 500 V AC between commons | Isolated compatible-ST interface |
| Status Response | 3 ms | |
| External Connection | Pressure clamp terminal only | Compatible-ST dual connector interface |
| Current Consumption | 550 mA at 5 V plus 60 mA external | Per compatible-ST specification |
| Dimensions | 32.8 × 130 × 130.9 mm | 32.8 × 130 × 127.2 mm |
| Weight | Approx. 0.30 kg | |
03
Product Functions
Both modules turn controller output states into field switching, but their physical interfaces serve different installed wiring.
Grouped current return
ADV557-S50 S1 divides the channels across common-minus groups, allowing a shared feeder or return problem to be separated from an individual output command.
Compatible-ST handoff
ADV559-P00 S1 preserves the ST4-compatible connector path so controller output data reaches an installed compatible-ST termination arrangement.
04
Key Features
The distinguishing features are the exact field interface, channel grouping and supported replacement geometry—not the shared 32-output count.
Pressure-clamp execution
ADV557-S50 S1 is the documented pressure-clamp-terminal execution; it is not a generic cable-interface version of the same module.
ST4-compatible structure
ADV559-P00 S1 uses two front connectors and the compatible-ST envelope, keeping the legacy wiring handoff distinct from ADV557-S50 S1.
Isolated output boundary
Both modules separate field output circuits from the system side, while external supply protection and load suppression remain in the field design.
05
Technical Questions
01Can Yokogawa ADV557-S50 S1 / ADV559-P00 S1 share the same field connector?
No. Yokogawa ADV557-S50 S1 / ADV559-P00 S1 use a pressure-clamp terminal execution and a compatible-ST connector arrangement respectively; connector fit must be verified from the installed wiring.
02What should be checked when one group on Yokogawa ADV557-S50 S1 / ADV559-P00 S1 does not switch?
For Yokogawa ADV557-S50 S1 / ADV559-P00 S1, compare controller commands with external 24 V supply, group common, return path and load continuity before replacing the module.
03Can Yokogawa ADV557-S50 S1 / ADV559-P00 S1 power a load from the backplane alone?
No. Yokogawa ADV557-S50 S1 / ADV559-P00 S1 switch externally supplied field loads; the field feeder must be present and sized for the connected channels.
04How is an inductive load handled on Yokogawa ADV557-S50 S1 / ADV559-P00 S1?
For Yokogawa ADV557-S50 S1 / ADV559-P00 S1, the external circuit must include the documented suppression path so inductive energy is not forced into the output stage.
05What proves Yokogawa ADV557-S50 S1 / ADV559-P00 S1 is the correct replacement?
For Yokogawa ADV557-S50 S1 / ADV559-P00 S1, confirm the complete suffix, output method, connector or terminal form, channel grouping and compatible-ST designation against the installed record.
06What is a safe commissioning sequence for Yokogawa ADV557-S50 S1 / ADV559-P00 S1?
With Yokogawa ADV557-S50 S1 / ADV559-P00 S1 de-energized, verify each field conductor and common; then restore module power, field supply and individual outputs in controlled stages while observing the actual loads.
06
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