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Yokogawa S2BN1D-19030 Base Plate

The Yokogawa S2BN1D-19030, also cataloged as the S2BN1D Base Plate, operates as a dedicated hardware component for 16-channel field signal interfacing within ProSafe-RS and Centum DCS networks. It provides direct physical connection, isolation, and power distribution for I/O modules in both single and redundant configurations.

Hardware Specifications

Parameter	Specification
Model Brand	Yokogawa
Origin	Japan
Weight	1.4 kg (3.08 lbs)
Dimensions	Wall mount type; M4 screw holes; 16-channel layout
Operating Temp	-40 to 70 degC
Power Consumption	Dependent on connected I/O modules; 24 V DC input, max 11 A for full load
Number of Channels	16 isolated channels
I/O Module Configuration	Single or Dual-Redundant
Mounting	Wall mount (M4 screws)
Field Signal Connection	Cable connector (S2BN1D-9), Pressure Clamp Terminal (S2BN1D-1), Spring Clamp Terminal (S2BN1D-2)
Communication Interface	F-SB Bus via S2KLF10 cable
System Power Supply	Via S2KPB10 power cable for base plate
Grounding	M3 screw terminal
Withstanding Voltage	1500 V AC (I/O to system) for 1 min, 42 V DC continuous
Insulation Resistance	≥100 MΩ at 500 V DC
Capacitance (Output to Ground)	≤0.4 μF

DCS Connectivity Features

This base plate integrates channel-to-channel isolation to prevent cross-talk between I/O modules. It supports 4-20 mA HART loop protocol communication for analog devices and provides cold junction compensation (CJC) for thermocouple signals. The F-SB Bus interface ensures deterministic data exchange between field devices and the ProSafe-RS/Centum DCS controller.

Frequently Asked Questions

Q: VnA: Can modules be hot-swapped while the base plate is energized?
A: Hot-swap of I/O modules is supported only after field signal disconnecting terminals are mechanically opened and output signals are software-disabled to prevent voltage spikes.

Q: VnA: What is the maximum continuous voltage the base plate can withstand?
A: The I/O to system withstands 1500 V AC for 1 minute and 42 V DC continuously.

Q: VnA: How should grounding be implemented for optimal EMI suppression?
A: Connect the M3 grounding screw terminal directly to the cabinet ground. Avoid using thin or long ground wires to minimize impedance and noise.

Field Installation Guidelines

1. Secure the base plate vertically inside the panel using four M4 screws.
2. Route all field signal cables to minimize parallel runs with high-current power lines.
3. Use the correct connector type for each channel (pressure clamp, spring clamp, or cable connector) as per suffix code.
4. Connect the system power via S2KPB10 cable and verify polarity before energizing.
5. Ensure all disconnecting terminals are in the open position before maintenance on analog or digital output channels.
6. Confirm grounding to the panel or building earth to maintain insulation and reduce EMI.

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