Technical Specifications

General Specifications

Suffix Code Interpretation

Module Configuration

Communications Interface

I/O Module Capacity

Power Consumption (SSC60S-S/SSC60D-S)

Memory Protection at Power Failure

The SSC60D-S2512 protects critical data effectively during power loss events. Application programs store safely in flash memory for permanent retention. Meanwhile, processor module operation data stores in NVRAM (nonvolatile memory) instead of volatile RAM. Consequently, the unit resumes operation without program reloading after power restoration. For safety-critical applications, this memory protection proves absolutely essential.

Temperature Adaptability

Standard temperature range spans -20°C to 40°C for the SSC60D-S2512. This model also includes ISA Standard G3 compliance for harsh environmental conditions with corrosive gases. For high temperature applications exceeding 40°C, a fan unit becomes available as an option. The fan unit specifically supports SSC60S-F/SSC60D-F models for elevated ambient temperatures. Therefore, the Yokogawa SSC60D-S2512 suits standard industrial environments perfectly without additional cooling hardware.

Dual-Redundant Configuration

The SSC60D-S2512 uses two power supply modules to achieve dual-redundant power. Two processor modules also operate in dual-redundant configuration for fault tolerance. Identical model codes (S2CP471 or SCP461) are required for processor module redundancy. If one module fails, the other continues operation without any interruption. For safety-critical processes, this redundancy ensures continuous, uninterrupted control.

Vnet/IP Communications

Vnet/IP interface provides dual-redundant communication paths for the SSC60D-S2512. Communication speed reaches 100 Mbps in full duplex mode for fast data exchange. UTP cable of CAT5e or higher connects via standard RJ45 connectors for convenience. Maximum distance between the safety control unit and Layer 2 switch reaches 100 meters. The interface complies fully with 100Base-TX standards for broad compatibility. Consequently, the Yokogawa SSC60D-S2512 integrates easily into existing Vnet/IP networks.

ESB Bus Interface

ESB bus interface also features dual-redundant configuration for fault tolerance against failures. This interface connects the safety control unit to remote I/O modules efficiently. Up to 8 I/O modules mount directly to each SSC60D-S2512 for local I/O needs. For larger systems, ESB bus coupler modules extend I/O capacity significantly. Using SEC402 with CFS1350 Node Expansion Package reaches 110 I/O modules per SCS. Using SEC401 alone reaches 78 I/O modules per SCS instead. Therefore, the Yokogawa SSC60D-S2512 scales easily from small to large applications.

Power Requirements & Consumption

Suffix code 1 specifies 100-120 V AC power supply at 50 or 60 Hz. Alternative suffix codes offer 220-240 V AC or 24 V DC options for flexibility. Power consumption for the 100-120 V AC model reaches 200 VA at full load. The 200-240 V AC model consumes 230 VA instead of 200 VA. The 24 V DC model draws only 5.5 A for standard type units. For comparison, SSC60S-F/SSC60D-F high-temperature models consume more power: 240 VA, 290 VA, and 7.0 A respectively. The SSC60D-S2512 provides efficient power usage relative to its processing capacity.

Installation Guidelines

Follow these steps for proper installation of the SSC60D-S2512.

1. Power down the entire system completely before installing the safety control unit.

2. Mount the unit in the rack using eight M5 screws. Ensure secure fastening.

3. Install two power supply modules (SPW481, SPW482, or SPW484) for dual-redundant configuration.

4. Install two processor modules (identical S2CP471 or SCP461) for dual-redundant operation.

5. Connect Vnet/IP cables using CAT5e or higher UTP cable with RJ45 connectors.

6. Connect ESB bus cables to the dual-redundant interfaces on the SSC60D-S2512.

7. Connect AC power at 100-120 V AC, 50 or 60 Hz to the designated terminals.

8. Power up the system and verify both processor modules show active status.

Note: The SSC60D-S2512 requires two identical processor modules for dual-redundant configuration. Suffix code 2 indicates no Safety Control Function License (requires R4.01 or later). For explosion protection, select a different suffix code instead of 5.

Packaging List

• One Yokogawa SSC60D-S2512 Safety Control Unit (rack mountable)

• Two power supply modules (SPW481, SPW482, or SPW484 as configured)

• Two processor modules (S2CP471 or SCP461 as configured)

• One set of rack mounting screws (eight M5 screws)

• One product documentation manual

Common FAQs

1. What does the suffix code S mean on the SSC60D-S2512?

Suffix code S indicates the standard type operating from -20°C to 40°C. This model also includes ISA Standard G3 compliance for harsh environments with corrosive gases. For high-temperature applications exceeding 40°C, choose the -F suffix instead. The Yokogawa SSC60D-S2512 suits standard industrial environments perfectly.

2. How many I/O modules can connect to the SSC60D-S2512?

Up to 8 I/O modules mount directly to each safety control unit for local I/O. Using SEC402 ESB bus coupler with CFS1350 Node Expansion Package reaches 110 I/O modules per SCS. Using SEC401 ESB bus coupler alone reaches 78 I/O modules per SCS instead. Therefore, the SSC60D-S2512 scales significantly with expansion modules for larger systems.

3. What is the communication speed of the SSC60D-S2512 on Vnet/IP?

Communication speed reaches 100 Mbps in full duplex mode for fast data transfer. UTP cable of CAT5e or higher connects via standard RJ45 connectors. Maximum distance between the unit and Layer 2 switch reaches 100 meters. The interface complies fully with 100Base-TX standards. Consequently, the Yokogawa SSC60D-S2512 provides fast, reliable network communication.

4. Does the SSC60D-S2512 require two processor modules?

Yes, this model includes two processor modules specifically for dual-redundant configuration. Identical model codes (S2CP471 or SCP461) are required for proper redundancy operation. If one module fails, the other continues operation without any interruption. For safety-critical processes, this redundancy ensures continuous, fault-tolerant control. The SSC60D-S2512 with single processor would lose all redundancy protection.

5. What is the power consumption of the SSC60D-S2512?

The 100-120 V AC model consumes 200 VA at full rated load. The 200-240 V AC model consumes 230 VA instead of 200 VA. The 24 V DC model draws only 5.5 A for standard type units. For high-temperature -F models, power consumption increases to 240 VA, 290 VA, or 7.0 A respectively. Always verify power supply capacity when installing the Yokogawa SSC60D-S2512.

Why Choose This Safety Control Unit?

The Yokogawa SSC60D-S2512 delivers reliable safety control for critical industrial processes that demand high availability. Rack-mountable design simplifies installation significantly in standard control cabinets. Dual-redundant power and processor modules ensure fault-tolerant operation without single points of failure. Vnet/IP and ESB bus interfaces provide flexible, dual-redundant network connectivity. Memory protection at power failure preserves programs and operating data automatically. For safety instrumented systems requiring standard temperature range and dual-redundant configuration, choose the SSC60D-S2512.