Emerson (GE) 8220-DI-IS PAC8000 16-Channel Intrinsically Safe Digital Input Module

• Manufacturer: Emerson (formerly GE Fanuc / MTL)
• Series: PAC8000
• Functional Description: 16-Channel Intrinsically Safe Digital Input
• Input Type: Single-ended, Switch/Proximity Detector
• Supply Voltage: 7-9 VDC
• On/Off Thresholds: On > 2.1 mA, Off < 1.2 mA
• Response Time: Selectable between 50 ms and 512 ms
• System Current Consumption: 350 mA
• Fault Detection: Open and short-circuit field wiring detection

8220-DI-IS

• PAC8000 Bus Interface Modules (BiM): For connecting the rack to various fieldbus networks.
• Other PAC8000 IS I/O Modules: Analog Input/Output or Digital Output modules with intrinsic safety ratings.
• PAC8000 Power Supplies: Dedicated power units for the PAC8000 backplane.

1. Visual & Physical Inspection: Verification of the 8220-DI-IS part number, connector pin integrity, and IS certification markings.
2. Functional Bench Testing: Simulating switch closures and proximity detector signals to validate channel activation and selectable response times.
3. Fault Detection Test: Intentionally creating open and short-circuit conditions to verify the module’s diagnostic reporting.
4. Final Certification: Issuance of a certificate of conformity confirming the unit is fully operational and meets original manufacturer specifications.

• Primary Applications: Hazardous area monitoring in oil & gas, chemical processing, and power generation, specifically for limit switches, proximity sensors, and valve position feedback.
• Key Features:
  • Intrinsically Safe: Eliminates the need for external safety barriers, simplifying wiring and reducing installation costs in hazardous zones.
  • Modular Design: Seamlessly integrates into the PAC8000 backplane, supporting open architecture communication via various Bus Interface Modules.
  • Advanced Diagnostics: Built-in open and short-circuit detection enhances system availability and simplifies troubleshooting.

• Q: What is the primary function of the 8220-DI-IS?
  A: It provides 16 channels of intrinsically safe digital inputs for monitoring discrete field devices in hazardous areas.
• Q: Does this module require external safety barriers?
  A: No, the intrinsic safety is integrated directly into the module, eliminating the need for external barriers.
• Q: What types of field devices can be connected?
  A: It is designed for switches and proximity detectors that operate within the specified 7-9 VDC supply and current thresholds.
• Q: How is the response time configured?
  A: The response time is selectable between 50 ms and 512 ms, typically via hardware jumpers or software configuration depending on the specific BiM used.