The Siemens/Texas Instruments 500-2151A is an AC power supply module for Series 500 PLC systems that converts 110/220 VAC input to regulated DC output. Operating at 3 AMP with 150 VA rated power, it delivers stable power to PLCs, HMIs, and industrial automation components in demanding environments. The module integrates overcurrent, overvoltage, and short-circuit protection with Class 1 Div 2 hazardous location compliance and battery backup capability for critical applications.
Technical Specifications
• Input voltage: 110/220 VAC
• Output current: 3 AMP
• Output power: 150 VA
• Power consumption: 5 W (typical)
• Operating temperature range: -10°C to +60°C
• Dimensions: 150 × 100 × 70 mm
• Weight: Approximately 1.4 kg
• Degree of protection: IP20
• Hazardous location rating: Class 1 Div 2
– Key Features
• AC-to-DC power conversion for Series 500 systems
• Three-level protection: overcurrent, overvoltage, short-circuit
• Battery backup and EEPROM program storage
• Ladder memory protection
• DIN rail or panel mounting options
• 25-pin RS-232-C/RS-423 compatible data port
– Typical Applications
• Series 500 PLC power conditioning
• TI525 and TI535 PLC system integration
• Industrial automation and motion control systems
• HMI power supply in hazardous locations
– Compatibility & Integration
Designed specifically for Series 500 PLC architecture. Compatible with TI525 and TI535 systems. RS-232-C/RS-423 interface enables system communication and diagnostics within integrated automation networks.

















