SSC50D-S2543

Configured for redundant safety control processing over the Vnet/IP network, the Yokogawa SSC50D-S2543 (SSC50D Duplexed Safety Control Unit) provides dual-redundant power supply operation in a rack-mountable configuration. This model uses a 24 V DC power supply and includes the CFS1100 Safety Control Function License for R3: R3.02.31 or later. It is specified as a standard type with ISA Standard G3 environmental protection.

Hardware Specifications

Parameter	Specification
Model	SSC50D-S2543
Base Model	SSC50D
Brand	Yokogawa
Product Type	Duplexed Safety Control Units
Network	Vnet/IP
Mounting Type	Rack mountable
Power Supply	24 V DC
Power Supply Configuration	Dual-redundant
Power Consumption	5.5 A at 24 V DC
AC Power Consumption - Reference Models	200 VA at 100 to 120 V AC; 230 VA at 200 to 240 V AC
Weight	8.5 kg
Operating Temp	-20 to 40 deg C
Environmental Rating	ISA Standard G3
Explosion Protection	None
Safety Control Function License	CFS1100
License Compatibility	R3: R3.02.31 or later
Rack Mounting Hardware	Eight M5 screws
Compatible Rack-Mounting Units	SSC50S-S / SSC50D-S

Redundant Power Supply and Vnet/IP Communication

The SSC50D-S2543 is configured with a dual-redundant power supply arrangement for the safety control unit. The Vnet/IP interface provides network connectivity within the compatible Yokogawa control system architecture.

The 24 V DC variant is rated at 5.5 A. The AC power consumption figures of 200 VA and 230 VA apply to the respective 100 to 120 V AC and 200 to 240 V AC models and should not be assigned to this DC-powered configuration.

The specified CFS1100 license supports the safety control function for system revision R3.02.31 or later. License compatibility should be verified against the installed control unit revision before commissioning.

Frequently Asked Questions (FAQ)

Q: Does the SSC50D-S2543 support a redundant power supply configuration?

A: Yes. The supplied model information specifies a dual-redundant power supply configuration. Detailed power supply switchover timing is not provided.

Q: What is the rated power supply requirement for the SSC50D-S2543?

A: The specified configuration uses a 24 V DC power supply with a rated current of 5.5 A. Confirm the installed rack and system power budget before energizing the unit.

Q: What rack mounting hardware is required?

A: The specified rack mounting arrangement uses eight M5 screws. The compatible rack-mounting unit designations listed in the source are SSC50S-S and SSC50D-S.

Field Installation Guidelines

• Rack mounting: Secure the unit using eight M5 screws in the designated rack mounting positions. Verify mechanical alignment and fastener engagement before connecting the wiring.
• Power supply: Confirm the installed unit is the 24 V DC variant. Check polarity, terminal identification, and supply capacity against the applicable Yokogawa installation documentation.
• Grounding: Connect protective and functional grounding according to the system installation manual. Avoid using signal cable shields as substitutes for protective grounding.
• Network cabling: Route Vnet/IP communication cables separately from power conductors where practicable. Follow the manufacturer's requirements for cable type, connector termination, shielding, and network topology.
• Redundancy verification: Confirm both power supply paths and the associated system configuration before commissioning. Do not assume a specific switchover time without the applicable technical documentation.
• Environmental conditions: Maintain the specified operating temperature range of -20 to 40 deg C and verify that the installation environment meets ISA Standard G3 requirements.
• License and revision checks: Confirm CFS1100 license compatibility with the installed safety control system revision, including the specified R3.02.31 or later requirement.

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