Yokogawa YS1700-100/A06/A31 | Ethernet & RS-485

Unboxing & Physical Snapshot

• Model & Brand: Yokogawa YS1700-100/A06/A31
• Product family: Yokogawa YS1000 Series programmable indicating controller.
• Base model: YS1700 programmable indicating controller.
• A06 option: Ethernet communication interface.
• A31 option: RS-485 communication interface. Verify the suffix against the actual nameplate and Yokogawa documentation before procurement release.
• Physical dimensions: Approximately 144 W × 144 H × 185 D mm for the YS1700 panel-mounted instrument; verify the exact mechanical drawing for the installed configuration.
• Approximate net weight: Approximately 2.0 kg; weigh the actual unit for commercial freight documentation.
• Estimated shipping weight: Approximately 2.5–3.5 kg packed, depending on carton, cushioning, manuals, and accessories.
• What’s in the box: YS1700 controller, panel-mounting hardware, terminal/connection accessories, and documentation only where included with the specific inventory lot.
• Receiving inspection: Photograph the front panel, rear terminals, option labels, serial number, firmware revision, and rating plate before installation.

Product Introduction

Architecture hook: The YS1700 is a panel-mounted programmable indicating controller designed for process control applications, with the instrument combining indication, control computation, alarms, and communication functions in a compact panel installation. The complete YS1700-100/A06/A31 designation should be retained in the asset register because its option suffixes determine the installed communication configuration.

This is not a generic process indicator. The controller’s I/O assignment, control strategy, communication configuration, and firmware revision can all affect replacement commissioning. A visually identical YS1700 with different options may require different wiring or configuration work—which is why the complete suffix and rear-terminal arrangement should be checked before releasing the spare.

Core Technical Specifications

Yokogawa YS1700-100/A06/A31

The physical dimensions and weight should be treated as inventory-planning values, not customs-certified measurements. For freight and warehouse master data, use the actual packed dimensions and scale weight.

? Global Compliance & Industry Certifications

For the , certification depends on the exact model configuration, manufacturing revision, and intended market.

• CE Mark: Verify the applicable Yokogawa Declaration of Conformity for the exact configuration.
• UL/cUL: Verify North American certification against the complete model and power-supply configuration.
• ATEX / IECEx: Do not assume hazardous-area certification. The should only be installed in a classified location when the exact unit and installation arrangement are covered by the required certification.
• Marine approvals: DNV or another marine classification should only be claimed when explicitly documented for the exact configuration.
• EMC: Verify the applicable Yokogawa EMC documentation and installation requirements, including panel grounding and communication wiring.

For a process controller, certification is only one part of the compliance record. The I/O configuration, alarm behavior, communication links, and control parameters can also affect the safety and functional basis of the installation.

Verify specific lot certifications with OEM.

? Long-Term Storage & Asset Preservation Guide

• Protect the front-panel electronics. Store the controller in its original carton or equivalent protective packaging so the LCD, keys, bezel, and mounting hardware are not subjected to mechanical pressure.
• Control moisture. Keep the unit in a clean, dry warehouse, preferably below 60% RH, and prevent condensation after cold transportation. Moisture around the rear terminal assembly can cause corrosion and insulation problems.
• Preserve configuration information. Keep the original configuration files, option records, firmware revision, and terminal documentation with the physical asset. A replacement controller without the correct control parameters can be mechanically identical yet operationally unsuitable.

Before energizing a long-stored , inspect the rear terminals, communication connectors, display, mounting hardware, and enclosure for corrosion or contamination. Record the installed firmware/configuration before making any changes.

Physical Installation Prerequisites

• Use the specified panel cutout and mounting brackets for the ; verify the current OEM mechanical drawing before machining a cabinet.
• Maintain sufficient rear clearance for terminal wiring, communication connectors, and service access. Do not substitute a generic 50 mm requirement for Yokogawa’s specified installation clearance.
• Prevent cable bundles from pressing against the rear terminal block or restricting connector access.
• Establish the required protective grounding/bonding connection before energization.
• Keep Ethernet and RS-485 communication wiring appropriately separated from high-voltage switching and motor wiring.
• Verify RS-485 polarity, termination, shielding, and communication parameters before connecting the A31 interface.
• Confirm the Ethernet network configuration before connecting the A06 interface to a live plant network.
• Before enabling control outputs, verify all configured alarm limits, output actions, interlocks, and fail-safe states against the approved process-control documentation.

Buyer’s FAQ

Q: What HS Tariff Code should be used for -100/A06/A31?
A: The HS classification should be based on the controller’s actual function and electrical characteristics under the importing country’s tariff schedule. Do not classify it from the Yokogawa model number alone; retain the technical description supporting the customs decision.

Q: Does Country of Origin come from Yokogawa’s corporate headquarters?
A: No. COO is the actual manufacturing origin of the specific unit. Reconcile the physical nameplate, OEM documentation, supplier declaration, and commercial invoice before making a preferential-origin claim.

Q: What shipping protection is appropriate for this controller?
A: Protect the LCD/front bezel from compression and shield the rear terminal assembly from impact. For an expensive or difficult-to-source legacy spare, shipping insurance is reasonable; document the serial number and condition before dispatch.

Q: Does -100/A06/A31 contain the latest firmware?
A: Do not assume it does. Firmware revision and configuration should be recorded from the actual controller before commissioning. For a replacement unit, compare the firmware, option configuration, I/O assignments, alarm parameters, and control strategy against the approved operating baseline.