GE Fanuc IC694MDL250 – 16-Point 120VAC Discrete Input Module | Series 90-30 PLC Platform
Engineering Background
The IC694MDL250 is a discrete AC voltage input module designed for GE Fanuc’s Series 90-30 programmable logic controller platform — one of the most widely deployed mid-range PLC families in North American industrial automation. Engineered to interface real-world 120VAC field signals with the controller’s logic bus, this module has been a cornerstone of process and discrete manufacturing control architectures for decades.
Product Positioning
Targeted at procurement engineers and MRO buyers who require a verified, drop-in replacement or expansion module for existing Series 90-30 installations. The IC694MDL250 delivers 16 isolated AC input channels in a single slot, minimizing rack footprint while maximizing field connectivity density. It is the preferred choice for panel builders, system integrators, and plant maintenance teams operating in high-voltage AC field environments.
Complete Technical Specifications
- Part Number / SKU: IC694MDL250
- Manufacturer: GE Fanuc (General Electric Automation)
- Platform / Series: Series 90-30 (IC694 family)
- Module Type: Discrete AC Voltage Input
- Number of Input Points: 16 channels
- Nominal Input Voltage: 120VAC
- Input Voltage Range: 74–132VAC (ON state); 0–20VAC (OFF state)
- Input Frequency: 47–63 Hz
- Input Current (per point): ~10 mA @ 120VAC
- Isolation: Optical isolation between field and logic bus
- Input Groups: 2 groups of 8 points (common neutral per group)
- Response Time (ON): ≤ 25 ms
- Response Time (OFF): ≤ 25 ms
- Backplane Current Draw: 100 mA @ 5VDC
- Operating Temperature: 0°C to 60°C (32°F to 140°F)
- Storage Temperature: -40°C to 85°C
- Relative Humidity: 5–95% non-condensing
- Module Weight: Approx. 280 g
- Rack Compatibility: IC694CHS392, IC694CHS398, IC694CHS782, IC694CHS398 (all Series 90-30 racks)
- Certifications: UL Listed, CE Marked, CSA
- RoHS Compliance: Consult factory for specific lot
Proven Application Environments
- Discrete Manufacturing: Machine tool interlocks, conveyor control, press safety circuits
- Process Industries: Pump status monitoring, valve position feedback, motor run/fault signals
- Building Automation: HVAC equipment status, lighting control panels, fire/alarm interface
- Water & Wastewater: Level switch inputs, flow switch monitoring, pump station control
- Oil & Gas: Field device status acquisition in 120VAC panel environments
- Food & Beverage: Line status monitoring, safety interlock integration
Engineering Advantages
- High Channel Density: 16 AC inputs in a single rack slot reduces wiring complexity and panel space
- Optical Isolation: Protects the CPU and backplane from field-side voltage transients and noise
- Dual-Group Neutral Architecture: Allows two independent AC sources or neutral references within one module
- Wide Voltage Tolerance: Accepts 74–132VAC, accommodating real-world line voltage fluctuations
- Hot-Swap Compatible: Supports module replacement without full rack power-down (with appropriate rack configuration)
- LED Status Indicators: Per-channel ON/OFF LEDs for rapid field diagnostics without a programmer
- Proven Longevity: Mature, stable hardware with extensive installed base and documented field reliability
System Architecture & Signal Flow
The IC694MDL250 occupies one slot in any Series 90-30 rack (IC694 family). Field wiring connects to the 40-pin terminal block (TB1) via a removable connector. Each input channel monitors the AC voltage level between its input terminal and the group common (neutral). The internal optical isolator converts the AC signal to a logic-level DC signal on the backplane bus. The CPU reads the 16-bit input image table word corresponding to this module’s rack/slot address during each scan cycle. No external power supply is required for the module logic — all power is drawn from the 5VDC backplane rail.
Signal path: Field 120VAC device → Terminal block → Bridge rectifier → Optical isolator → Backplane logic bus → CPU input image table → Ladder logic
Sourcing & Quality Verification
All IC694MDL250 units offered by Konmask.com are sourced through verified industrial supply channels. Each unit undergoes the following pre-shipment checks:
- Visual inspection: housing integrity, label legibility, connector pin condition
- Firmware/revision label verification against GE Fanuc revision history
- Functional power-on test where test equipment is available
- Anti-static packaging with humidity indicator card
- Photographic documentation of serial number and revision code
Condition is clearly stated in the listing (New / Surplus New / Refurbished / Used-Tested). Contact us for lot-specific documentation or test reports.
Procurement Process
- Lead Time: In-stock units ship within 1–3 business days; confirm availability for urgent orders
- Minimum Order: 1 unit
- Volume Pricing: Available for orders of 5+ units — contact sales for quote
- Export Compliance: ECCN EAR99; no export license required for most destinations
- Payment: T/T, PayPal, credit card, and trade terms available for qualified accounts
- Warranty: 90-day functional warranty; extended warranty available on request
- Returns: 30-day return window for unused, uninstalled units in original packaging
Technical FAQ
Q: Is the IC694MDL250 compatible with Series 90-70 racks?
A: No. The IC694 family is exclusively compatible with Series 90-30 racks (IC694CHS-series). Series 90-70 uses the IC697 family with a different backplane architecture.
Q: Can I mix IC694MDL250 with DC input modules in the same rack?
A: Yes. Series 90-30 racks support mixed I/O module types in any slot. The CPU automatically maps each module’s I/O image based on rack/slot position.
Q: What is the maximum number of IC694MDL250 modules per rack?
A: Limited by available rack slots and total backplane current budget. A standard 10-slot rack (IC694CHS392) can accommodate up to 8 I/O modules alongside the CPU and power supply.
Q: Does this module require any special configuration in Proficy Machine Edition?
A: No special configuration is required beyond standard hardware configuration in Proficy ME (or earlier Logicmaster 90 software). The module is auto-identified by the CPU during rack scan.
Q: What connector/terminal block is used?
A: The IC694MDL250 uses a 40-pin removable terminal block. The mating connector is field-wireable and can be pre-wired and transferred during module replacement, minimizing downtime.
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