Product Overview
The YOKOGAWA YS1700-000/A34 is a mission-critical industrial safety controller engineered to monitor and mitigate process hazards in high-risk automation environments. As a core component of Yokogawa’s ProSafe-RS safety instrumented system (SIS) portfolio, this controller serves as the "brain" of safety loops—constantly monitoring critical process variables (e.g., pressure, temperature, level) and triggering predefined protective actions (e.g., shutting down valves, activating alarms) when thresholds are breached. What sets the YOKOGAWA YS1700-000/A34 apart is its compliance with IEC 61508 (SIL 3) and IEC 61511 standards, ensuring it meets the strictest safety requirements for industries like oil refineries, chemical plants, and nuclear power facilities.
Key features of the YOKOGAWA YS1700-000/A34 include redundant hardware architecture, high-speed fault detection, and bidirectional communication with Yokogawa’s Centum VP DCS. Its rugged design withstands harsh industrial conditions (e.g., temperature fluctuations, electromagnetic interference), while its intuitive configuration interface simplifies safety loop programming—making it an indispensable tool for operators tasked with protecting personnel, equipment, and the environment from catastrophic process failures.
Hainan Jinlin Mechanical & Electrical is a trusted distributor of industrial control products, offering a comprehensive range of brands. With extensive industry expertise and market insights, we adhere to the "Customer First, Forge Ahead" business philosophy, delivering exceptional customer service tailored to meet your specific needs.
Technical Specifications
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Parameter
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Value
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Product Model
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YOKOGAWA YS1700-000/A34
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Manufacturer
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YOKOGAWA
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Product Type
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Industrial Safety Controller (SIL 3-Certified)
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Safety Certification
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IEC 61508 (SIL 3), IEC 61511, ATEX Zone 2 / Class I Div 2
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Redundancy
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2-out-of-2D (2oo2D) or 2-out-of-3 (2oo3) configurable architecture
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Input/Output (I/O) Capacity
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Up to 128 digital/analog I/O points (via expansion modules)
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Supported I/O Signals
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4-20mA DC (analog), 24V DC (digital), HART (for smart sensor diagnostics)
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Fault Detection Time
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≤ 100ms (for critical safety loops)
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Communication Interfaces
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Ethernet/IP, Modbus TCP, Centum VP DCS Bus (for data synchronization)
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Programming Environment
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Yokogawa ProSafe-RS Engineering Tool (graphical function block programming)
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Power Requirement
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24V DC ±10% (1.5A maximum current draw, redundant power inputs)
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Housing Material
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Aluminum alloy (anti-corrosion coating, UL94 V-0 flame rating)
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Protection Rating
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IP20 (controller unit), NEMA 1 (panel-mounted)
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Operating Temperature
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-10°C to +60°C (ambient, non-condensing)
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Storage Temperature
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-40°C to +85°C
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Compatibility
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Yokogawa ProSafe-RS SIS, Centum VP DCS, STARDOM FCN PLCs
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Dimensions (W×H×D)
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150mm × 220mm × 280mm (base unit)
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Weight
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Approximately 3.2 kg (base unit)
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Variant Identifier
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/A34 (indicates regional compliance for North American markets)
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Key Features and Benefits
SIL 3 Compliance for Maximum Safety Assurance
The
YOKOGAWA YS1700-000/A34 is certified to IEC 61508 (SIL 3)—the highest safety integrity level for single controllers—making it suitable for safety loops where failure could result in loss of life, environmental damage, or major equipment loss. Its 2oo2D (2-out-of-2 with diagnostics) or 2oo3 (2-out-of-3) redundant architecture ensures no single point of failure: if one hardware component (e.g., CPU, power supply) malfunctions, the redundant unit takes over seamlessly, maintaining continuous safety monitoring. For example, in an oil refinery’s distillation column safety loop, the controller monitors pressure and temperature; if either variable exceeds safe limits, it triggers an emergency shutdown (ESD) valve within 100ms—preventing explosions or fires.
High-Speed Fault Detection and Response
With a fault detection time of ≤100ms, the YOKOGAWA YS1700-000/A34 minimizes the window of exposure to hazardous conditions. It uses advanced diagnostic algorithms to continuously check internal components (e.g., CPU, memory, I/O circuits) and connected sensors for anomalies—such as sensor drift, wiring faults, or power fluctuations. If a fault is detected, the controller immediately alerts operators via the Centum VP DCS and activates fail-safe actions (e.g., closing isolation valves) to neutralize the hazard. This speed is critical in processes like chemical reactor operations, where a 1-second delay in response could lead to uncontrolled reactions.
Seamless Integration with Yokogawa’s Automation Ecosystem
As a native component of Yokogawa’s ProSafe-RS SIS, the YOKOGAWA YS1700-000/A34 integrates seamlessly with the Centum VP DCS via a dedicated communication bus. This integration enables real-time data synchronization: operators can monitor safety loop status, view diagnostic logs, and modify safety setpoints directly from the DCS interface—eliminating the need for separate control panels. For instance, in a power plant, the controller shares turbine vibration data with the Centum VP DCS; if vibration exceeds safe levels, the DCS displays an alert while the YS1700-000/A34 triggers a turbine shutdown—ensuring coordinated, efficient hazard mitigation.
HART Support for Smart Sensor Diagnostics
The YOKOGAWA YS1700-000/A34 natively supports HART communication, enabling it to access detailed diagnostic data from HART-enabled sensors (e.g., pressure transmitters, temperature probes). Beyond just measuring process variables, the controller can detect sensor-specific issues like partial plugging, membrane degradation, or calibration drift—issues that might go unnoticed by traditional safety controllers. For example, in a wastewater treatment plant’s chemical dosing system, the controller uses HART data to identify a failing pH sensor before it provides inaccurate readings, allowing technicians to replace the sensor during scheduled maintenance and avoiding unsafe chemical concentrations.
Rugged Design for Harsh Industrial Environments
Built with an aluminum alloy housing (anti-corrosion coating) and UL94 V-0 flame-rated materials, the
YOKOGAWA YS1700-000/A34 withstands the rigors of industrial use. Its operating temperature range (-10°C to +60°C) ensures reliable performance in environments from cold offshore platforms to hot chemical processing facilities. The controller also features redundant power inputs (24V DC ±10%) to protect against power supply failures—a critical design choice for safety systems where power loss could disable protective functions. Additionally, its IP20 rating shields internal components from dust and debris, extending service life and reducing maintenance requirements.
Related Models
- YOKOGAWA YS1700-000/A35 – Variant of the YS1700-000/A34 with enhanced EMC immunity (IEC 61000-6-2), optimized for environments with high electromagnetic interference (e.g., near large motors or power converters).
- YOKOGAWA YS1700-000/E34 – European-compliant variant (CE marked) of the YS1700-000/A34, tailored for EU markets with additional RoHS compliance for hazardous substance restrictions.
- YOKOGAWA YS1700-100/A34 – High-I/O variant of the YS1700-000/A34, supporting up to 256 I/O points via expansion modules for large-scale SIS applications (e.g., refineries with multiple safety loops).
- YOKOGAWA YS1700-000/A34-R – Redundancy kit including two YS1700-000/A34 controllers and a synchronization module, pre-configured for 2oo2D operation to reduce setup time.
- YOKOGAWA YS1600-000/A34 – SIL 2-certified predecessor of the YS1700-000/A34, suitable for lower-risk safety loops (e.g., non-hazardous material storage tanks) where SIL 3 is not required.
- YOKOGAWA YS1700-000/A34-EX – Explosion-proof variant (ATEX Zone 1 / Class I Div 1), designed for direct installation in hazardous areas (e.g., oil wellheads, chemical reactor enclosures).
Company & Service Highlights
Hainan Jinlin Mechanical and Electrical Equipment Co., Ltd. is a leading distributor of industrial control products, partnering with industry giants such as Yokogawa, Bentley Nevada, and Honeywell. With years of experience in the field, we offer:
- Genuine Safety-Certified Products: All YOKOGAWA YS1700-000/A34 units are 100% original, with full manufacturer documentation (including SIL certification records) to ensure compliance with regulatory requirements.
- Safety Engineering Support: Our team of IEC 61511-certified engineers provides pre-sales consultation (e.g., safety loop design, SIL verification) and post-sales services (e.g., on-site commissioning, loop testing) to ensure the controller meets your specific safety needs.
- Fast Delivery & Stock Availability: We maintain regional stock of the YS1700-000/A34 (and its variants), enabling delivery within 3-7 business days for urgent safety system upgrades or replacements.
- Warranty & Maintenance: We offer a one-year warranty on the YOKOGAWA YS1700-000/A34, with optional extended maintenance contracts that include annual SIL revalidation and firmware updates.
Typical Application Areas
- Oil and Gas: Managing emergency shutdown (ESD) loops for wellheads, pipelines, and refinery units, where the YS1700-000/A34’s SIL 3 compliance prevents hydrocarbon leaks and explosions.
- Chemical Processing: Controlling safety loops for reactor pressure, temperature, and chemical dosing, ensuring compliance with OSHA and EPA regulations for hazardous material handling.
- Power Generation: Monitoring turbine vibration, boiler pressure, and steam temperature in fossil fuel or nuclear power plants, triggering shutdowns to prevent equipment damage or core meltdowns.
If you require the YOKOGAWA YS1700-000/A34 for a safety-critical project or need assistance with SIL verification, please contact us today for tailored support.
Contact Information
