S2BN1D-19030 | Yokogawa ProSafe-RS Wall-Mount Base Unit

Product Overview

The Yokogawa S2BN1D-19030 serves as a rugged wall-mount base unit for the ProSafe-RS safety instrumented system. This hardware interface facilitates the secure connection between field power supplies and system I/O modules via AKB cable connector interfaces. Designed for decentralized safety architectures, it manages high-current power distribution while providing extreme environmental protection. We supply this unit as 100% Brand New and original, ensuring the safety integrity and electrical isolation required for high-risk industrial processes.

Part Number Breakdown

The S2BN1D-19030 utilizes specific suffix logic to define its mechanical and environmental capabilities:

Technical Specifications

The S2BN1D-19030 maintains high electrical isolation and power density for field-side operations.

• Field Power Rating: 24 V DC (+20%/-10%), up to 11.0 A

• Over Voltage Protection (OVP): Activates at 32 V or lower

• Withstanding Voltage (I/O to System): 1500 V AC for 1 minute

• Withstanding Voltage (Output to Ground): 500 V AC or higher for 1 minute

• Insulation Resistance: 100 MΩ or more (at 500 V DC)

• Output to Ground Capacitance: 0.4 μF or less

• Operating Temperature: -40°C to +70°C (Wide range)

• Corrosion Resistance: ISA Standard G3 compliant

• Weight: Approx. 1.4 kg

• Condition: 100% Brand New and Original

Engineering Advantages

The S2BN1D-19030 resolves critical deployment challenges in harsh industrial environments:

• Extreme Thermal Resilience: While standard base units fail in sub-zero or high-heat conditions, this "Suffix 3" variant operates reliably from -40°C to +70°C. This allows for installation in non-climatized field enclosures located in arctic or desert environments without auxiliary heating or cooling.

• Corrosive Atmosphere Protection: The ISA Standard G3 conformal coating shields the internal bus and connection points from hydrogen sulfide ($H_2S$), sulfur dioxide ($SO_2$), and chlorine. This prevents the "creeping corrosion" that typically causes hardware failure in paper mills, refineries, and wastewater treatment plants.

• High-Integrity Electrical Isolation: A 1500 V AC withstanding voltage barrier separates the field power loops from the sensitive system backplane. This prevents localized electrical faults or lightning-induced surges from propagating into the central safety controller, maintaining the integrity of the Safety Instrumented Function (SIF).

• High-Current Distribution Management: The unit handles up to 11.0 A of field power. Integrated Over Voltage Protection (OVP) at 32 V automatically clamps power spikes, safeguarding downstream I/O modules and field sensors from destructive voltage transients.

FAQs

How do I connect the field power supply to the S2BN1D-19030?

The unit features dedicated field power supply terminals (EP+, EP-). Use the appropriate power cable to establish a secure link between your 24V DC source and these terminals, ensuring you adhere to the 11.0 A maximum current rating.

What cable type is required for the system interface?

The "9" suffix indicates a cable connector interface specifically designed for AKB cables. Ensure you use original Yokogawa AKB signal cables to maintain the required impedance and shielding for ProSafe-RS communication.

Can this unit be used in hazardous offshore environments?

While the ISA G3 coating provides excellent salt-air and chemical resistance, the "0" suffix indicates the unit does not have explosion protection. For installation in hazardous zones (Class I, Div 2 or ATEX Zones), you must house the unit in a suitably certified explosion-proof or purged enclosure.

Does the 1.4 kg weight affect wall-mount stability?

The 1.4 kg weight is relatively light for industrial base units, but we recommend mounting it on a rigid, vibration-dampened surface using all designated mounting points to ensure long-term mechanical stability in high-vibration areas.