The ABB Advant OCS 23BA20 (GSNE000700R5312) is a 16-channel digital input block engineered for safety-critical automation systems. This industrial-grade module provides high-density, fault-tolerant status monitoring for turbines, compressors, and process control applications while meeting stringent SIL 2 safety requirements.

• 16 isolated 24 VDC digital inputs with sink/source capability
• 1 ms Sequence-of-Events (SOE) resolution for precise event timing
• Advanced line-fault detection (open circuit, short circuit, power loss)
• Hot-swappable design for maintenance without system shutdown
• Individual LED status indicators per channel with wire-break diagnostics
• DIN-rail or panel mounting with IP20 rated housing
• Wide operating temperature range: -25°C to +60°C
• 100% genuine ABB OEM component with factory calibration

• Gas and steam turbine proximity switch monitoring
• Compressor status and protection input systems
• Fire and gas detector digital loop interfaces
• High-integrity pressure and level switch inputs
• SIL 2 safety-instrumented functions (SIF)

• SIL 2 (IEC 61508) safety integrity level
• CE, UL 508, CSA C22.2 No. 142
• ATEX Zone 2, IECEx Ex ec IIC T4 Gc

Includes 1× 23BA20 digital input block, 1× removable 20-pin spring-clamp terminal block, factory calibration certificate with traceability label, quick-start guide, and ESD wrist strap.