GE 8502-BI-DP-01 – 16-Point 24VDC Digital Input Module | Series 90-70 PLC Platform
Engineering Background: The GE 8502-BI-DP-01 is a discrete digital input module designed for the GE Series 90-70 programmable logic controller (PLC) platform — one of the most widely deployed rack-based control architectures in heavy industrial, power generation, and process automation environments. Built to GE Fanuc’s industrial-grade specifications, this module provides reliable field-signal acquisition for high-density I/O applications where signal integrity and deterministic scan performance are non-negotiable.
Product Positioning: Targeted at maintenance engineers, MRO procurement teams, and system integrators managing legacy Series 90-70 infrastructure, the 8502-BI-DP-01 delivers a direct OEM-equivalent replacement path without requiring rack or backplane modifications. Konmask.com stocks verified units sourced through controlled supply channels, supporting both emergency replacement and planned lifecycle refresh programs.
Complete Technical Specifications
- Part Number / SKU: 8502-BI-DP-01
- Manufacturer: GE (General Electric) / GE Fanuc Automation
- Platform / Series: Series 90-70 PLC
- Module Type: Digital Input (Discrete Input)
- Number of Input Points: 16 Points
- Input Voltage: 24VDC
- Input Logic: Positive / Sinking (IEC Type 1 compatible)
- Isolation: Optical isolation between field and backplane
- Backplane Interface: Series 90-70 VME-based rack backplane
- Form Factor: Single-slot Series 90-70 rack module
- Operating Temperature: 0°C to 60°C (32°F to 140°F)
- Storage Temperature: -40°C to 85°C
- Relative Humidity: 5% to 95% non-condensing
- Certifications: UL Listed, CE Marked (consult GE documentation for full compliance matrix)
- Weight: Approx. 150 g
- Country of Origin: USA
Proven Application Environments
- Power generation plants (turbine control, generator protection systems)
- Oil & gas upstream and downstream process control
- Water and wastewater treatment SCADA integration
- Automotive and heavy manufacturing assembly lines
- Chemical and petrochemical batch processing
- Pulp, paper, and material handling conveyor systems
- MRO replacement for aging Series 90-70 installations
Engineering Advantages
- Direct Drop-In Replacement: 100% backplane-compatible with all Series 90-70 rack configurations — no firmware changes or re-engineering required.
- Optical Isolation: Protects the CPU backplane from field-side voltage transients and ground loops common in industrial environments.
- High-Density I/O: 16 discrete inputs in a single slot maximizes rack utilization and minimizes cabinet footprint.
- Deterministic Scan Performance: Consistent input scan latency supports time-critical ladder logic and interlock applications.
- Wide Temperature Tolerance: Rated for full industrial ambient range without derating.
- LED Status Indicators: Per-channel LED diagnostics enable rapid field troubleshooting without test equipment.
System Architecture & Signal Flow
The 8502-BI-DP-01 occupies a single slot in any Series 90-70 rack (IC697CHS750, IC697CHS782, IC697CHS790, etc.). Field wiring connects via a removable terminal block to the module’s 16 input channels. Each channel passes through optical isolation before presenting its logic state to the VME backplane. The Series 90-70 CPU (e.g., IC697CPU731, IC697CPU771) reads input image data during each PLC scan cycle via the backplane bus. The module requires no external power supply beyond the rack’s internal 5VDC backplane power.
Sourcing & Quality Verification
- Source: Controlled MRO and OEM surplus channels; no gray-market or counterfeit exposure.
- Inspection: Each unit undergoes visual inspection, label verification, and functional pre-shipment checks.
- Condition: New surplus or refurbished-to-spec; condition disclosed per order confirmation.
- Warranty: 12-month Konmask operational warranty covering manufacturing defects.
- Documentation: GE Fanuc datasheet and installation guide available upon request.
Procurement Process
- Confirm part number 8502-BI-DP-01 matches your rack slot and I/O requirements.
- Submit inquiry or place order via Konmask.com product page.
- Receive order confirmation with unit condition disclosure and lead time.
- Shipment with tracking; export documentation available for international orders.
- Post-delivery technical support via support@konmask.com.
Technical FAQ
Q: Is the 8502-BI-DP-01 compatible with the IC697 CPU series?
A: Yes. It is fully compatible with all Series 90-70 CPUs and rack configurations using the standard VME backplane.
Q: What is the input voltage range tolerance?
A: The module is rated for 24VDC nominal. Consult the GE Fanuc hardware reference manual (GFK-0356) for exact ON/OFF threshold voltages.
Q: Can this module be used with Profibus-DP?
A: The “-DP” suffix in the part number denotes a Profibus-DP compatible variant. Verify your network master configuration supports Series 90-70 remote I/O via Profibus before installation.
Q: Do you provide export documentation for international shipments?
A: Yes. Commercial invoice, packing list, and ECCN classification documentation are available upon request.
Q: What is the lead time?
A: In-stock units typically ship within 1–3 business days. Contact us for urgent requirements.
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