Description

8521‑LC‑MT Genius Communications Module

Technical Specifications

• Product Model: 8521‑LC‑MT
• Brand: GE
• Warranty: One Year
• Input Voltage: 5 VDC from PAC8000 backplane
• Operating Temperature: ‑20 °C ~ +60 °C
• Storage Temperature: ‑40 °C ~ +85 °C
• Response Time: Genius‑bus scan cycle configurable
• Protection Class: IP20 rack‑mount plug‑in module
• Accuracy Class: Industrial field‑bus communication grade
• Output Frequency: Not applicable
• Rated Current: 0.8 A @5 VDC typical backplane consumption
• Bus Interface: Genius proprietary RS‑485 field‑bus port; selectable baud‑rates: 38.4 k / 76.8 k / 153.6 k bps
• Network Capacity: Supports up to 32 Genius I/O devices per bus segment; max cable length 1370 metres at 153.6 kbps
• System Compatibility: PAC8000 control system, Genius distributed I/O network
• Function: Genius‑bus controller module, bridging PAC8000 backplane to remote Genius I/O field blocks
• Diagnostics: Module status, bus‑activity, bus‑fault LED indicator lights
• Certifications: CE, UL
• Humidity: 5‑95 % RH, non‑condensing
• Weight: 0.42 kg
• Dimensions: Standard PAC8000 single‑slot module footprint
• 

Product Overview

8521‑LC‑MT is the Genius bus controller communication module for GE PAC8000 automation system. It connects the PAC8000 controller backplane to the Genius distributed remote‑I/O field‑bus network, enabling data exchange between central control rack and field‑installed Genius I/O blocks. Supports multiple baud‑rate settings for balancing network speed and maximum cable‑run length. On‑board LED diagnostics simplify commissioning and field‑troubleshooting. Obsolete PAC8000 spare hardware available as refurbished and surplus tested units for legacy‑system maintenance.

Application Notes

‑ Install into valid PAC8000 carrier slot; configure Genius‑bus baud‑rate via system software. ‑ Use Genius‑bus compliant shielded twisted‑pair field‑cable; apply correct bus‑termination resistor at physical bus end. ‑ Observe ESD anti‑static precautions during module replacement. ‑ Typical deployment: PAC8000 Genius distributed‑I/O communication‑module spare‑part stocking.