GE 8121-DI-DC PAC8000 Digital Input Module
- Product Code: 8121-DI-DC
- Availability: In Stock
Purchase Attributes：Original, Brand New
Service Attributes
▷ Stock & Logistics：Fast Delivery
▷ After-sales Guarantee：12 Months Warranty
▷ Online Customer Service：24 Hours Online Support
▷ Product Advantages：Competitive Price, Long Service Life
Application Attributes：GE 8121-DI-DC PAC8000 Digital Input Module, Industrial Spare Parts
GE 8121-DI-DC PAC8000 Digital Input Module
Manufacturer: GE / Baker Hughes (MTL)
Model: 8121-DI-DC
Series: PAC8000 / MTL8000
Type: 16-Channel Isolated Digital Input
Function: Monitoring of 24VDC field devices (switches, sensors)
1. Overview
The GE 8121-DI-DC is a **high-density 16-channel isolated digital input module** for PAC8000/MTL8000 systems. It interfaces 24VDC field signals (NPN/PNP compatible) to the controller, with 1500VAC isolation and fast response. Its module-powered design suits hazardous areas (Zone 2/Div. 2) and critical process monitoring.
2. Technical Specifications
• Channels: 16 × isolated digital inputs (NPN/PNP)
• Input Voltage: 24VDC (18–32VDC range)
• Input Current: 3–5mA per channel (typical)
• Isolation: 1500VAC continuous (channel-to-bus)
• Response Time: ≤1ms (ON→OFF), ≤2ms (OFF→ON)
• Filtering: 1ms software-configurable debounce
• Power: Module-powered (125mA max)
• Operating Temp: -20°C to +70°C
• Certification: CE, ATEX/IECEx (Zone 2/Div. 2)
• Dimensions: 176mm × 110mm × 32mm
• Weight: ~0.3kg
3. Key Features
• 16-Channel High Density: Compact 16-input design saves cabinet space
• 1500VAC Isolation: Protects system from field-side electrical noise
• NPN/PNP Compatibility: Works with all standard 24VDC sensors/switches
• Fast 1ms Response: Ideal for high-speed interlocks and pulse detection
• Hazardous Area Rated: Safe for Zone 2/Div. 2 explosive atmospheres
4. Applications
• Oil & Gas: Pressure/limit switches, flame detectors in hazardous areas
• Power Generation: Turbine speed, vibration, and safety limit monitoring
• Chemical & Petrochemical: Valve position, flow switch, and ESD status inputs
• Industrial Automation: Conveyor, machine safety, and emergency stop monitoring
GE © 8121-DI-DC PAC8000 Digital Input Module