DS200SSBCG1A | GE Mark V Safety Controller Board

Description

Product Core Brief

• Model: DS200SSBCG1A
• Brand: General Electric (GE)
• Series: Mark V DS200
• Core Function: Safety logic controller for SIF
• Product Type: Safety Controller Board (1oo2 architecture)
• Key Specs: 2 x 300 MHz (redundant) | SIL 3 | 256 I/O | 10 ms scan | Redundant backplane
• Condition: New Original.

Product Introduction

The DS200SSBCG1A is a safety logic controller board for GE’s Mark V DS200 series, used in Safety Instrumented Systems (SIS) for turbine control. It provides SIL 3 certified safety logic execution independent of the main turbine control CPU.

The SSBCG1A uses a 1oo2 (one out of two) redundant architecture: two independent 300 MHz processors execute the same safety logic and compare results. If they disagree, the board outputs go to the failsafe state. Use it to implement Safety Instrumented Functions (SIF): emergency shutdown, overspeed protection, high vibration trip, high temperature trip, and burner management. Certified to IEC 61508 SIL 3.

Key Technical Specifications

Key Selling Points & Differentiators

• SIL 3 certified safety controller – TÜV certified per IEC 61508. Use for SIF up to SIL 3.
• 1oo2 redundant processor architecture – Two processors execute same logic. Compare every scan. Mismatch triggers failsafe.
• 256 safety I/O points – Access safety-rated I/O boards (SSBAG1, SSBAG1B, etc.) via backplane.
• 10 ms safety scan – Fast enough for most turbine safety functions. Overspeed detection on dedicated board (SSBAG) runs faster.
• Function Block Diagram programming – Standard safety logic (AND, OR, timers, comparators). Software included.
• Redundant backplane communication – Dual backplane connectors for high availability.
• Diagnostic coverage >99% – Built-in self-tests: memory CRC, processor comparison, watchdog timers.
• QC includes SIL 3 logic execution test – Verified with TÜV-certified test suite.
• 10-year warranty – For safety-critical installations.

Frequently Asked Questions (FAQ)

Q: What is the difference between the main CPU (SBC) and the safety controller (SSBCG1A)?

Q: Do I need both a main CPU and a safety controller?
A: For SIL 3 applications, yes. The main CPU handles control (non-safety). The safety controller handles independent safety shutdown. They can run on the same backplane.

Q: How does 1oo2 voting work?
A: Processor A and Processor B execute identical safety logic. They exchange results every scan. If results match, board operates normally. If mismatch occurs, board outputs go to failsafe state and fault LED lights. No single processor failure can cause an unsafe output.

Q: What programming software is required?
A: Included Windows software (no license fee). Supports Function Block Diagram (FBD) and Ladder Diagram (LD). Standard safety function blocks: AND, OR, NOT, timer (on-delay, off-delay), comparator (>, <, =), latch (RS, SR). Also supports custom logic via C function blocks (with SIL 3 validation).

Q: Can I run standard (non-safety) logic on the SSBCG1A?
A: Yes—but the board is more expensive than a standard CPU. For non-safety applications, use SBC series.

Q: What is the proof test interval?
A: 1 year. The board performs automatic self-tests daily (memory CRC, processor comparison, watchdog). Manual proof test requires injecting test signals to verify safety outputs. Procedure in safety manual.

Q: What QC tests are specific to the SSBCG1A?
A: Twelve tests:

1. Processor comparison: 1oo2 mismatch detection
2. Safety logic execution: all function blocks verified
3. Memory CRC: 100% coverage
4. Watchdog timer: 100 ms timeout verification
5. Scan rate: 10 ms ±0.5 ms
6. Backplane redundancy: failover between A and B
7. Diagnostic coverage: >99% via fault injection
8. PFDavg calculation: <1.0 × 10⁻⁴
9. HFT: verified = 1
10. Isolation: 3000 VAC
11. Temperature: −40°C to +70°C
12. Burn-in: 168 hours at +65°C

Q: What shipping protection for this safety-certified board?
A: Maximum protection. Anti-static bag, ESD foam cradle, hard plastic clamshell case, desiccant, inert gas backfill. Double-wall box with “SAFETY CERTIFIED,” “SIL 3” labels. SIL 3 certificate laminated. Safety manual (300 pages) included. Programming software on USB drive. Configuration cable included. Proof test tool included. Each board in foam-lined flight case. Factory site visit mandatory for first-time installation (6–8 week lead time). Contact us for safety application engineering support.

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