GE IC697ALG440 – 16-Channel Analog Input Expander | Series 90-70 PLC Platform
Engineering Background
The IC697ALG440 is a high-density analog input expansion module engineered for GE Fanuc’s Series 90-70 programmable logic controller platform — one of the most widely deployed rack-based control architectures in heavy industrial automation. Designed to extend the analog acquisition capacity of existing 90-70 racks without additional CPU overhead, this module is a proven solution for process engineers who require reliable, multi-channel signal conditioning in demanding plant environments.
Product Positioning
Targeted at MRO procurement engineers, system integrators, and plant maintenance teams, the IC697ALG440 fills a critical role in legacy system sustainment and capacity expansion. Its compatibility with the full Series 90-70 backplane ecosystem makes it an essential stocking item for facilities running GE-based DCS/PLC hybrid architectures in power generation, oil & gas, chemical processing, and discrete manufacturing.
Complete Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | IC697ALG440 |
| Manufacturer | GE Fanuc Automation (now Emerson / GE Vernova) |
| Platform | Series 90-70 PLC |
| Module Type | Analog Input Expander |
| Number of Channels | 16 single-ended / 8 differential (configurable) |
| Input Signal Range | ±10 V DC, 0–10 V DC, 4–20 mA, 0–20 mA |
| Resolution | 12-bit (1 in 4096) |
| Input Impedance (Voltage) | > 1 MΩ |
| Input Impedance (Current) | 250 Ω (internal shunt) |
| Conversion Method | Successive Approximation (SAR) |
| Scan Rate | Configurable per channel group |
| Isolation | Optical isolation, field side to backplane |
| Operating Temperature | 0°C to +60°C |
| Storage Temperature | -40°C to +85°C |
| Relative Humidity | 5% to 95% non-condensing |
| Power Consumption | Supplied via Series 90-70 backplane (5 VDC) |
| Module Weight | Approx. 600 g |
| Backplane Compatibility | IC697CHS750, IC697CHS782, IC697CHS790 and compatible 90-70 racks |
| Programming Environment | Proficy Machine Edition / Logicmaster 90-70 |
| Certifications | UL Listed, CE Marked |
Proven Application Environments
- Power Generation: Turbine inlet temperature monitoring, generator excitation feedback, boiler pressure acquisition across multi-point sensor arrays
- Oil & Gas: Pipeline pressure and flow transmitter integration, wellhead RTU analog expansion, SCADA front-end signal aggregation
- Chemical & Petrochemical: Reactor temperature profiling, pH and conductivity loop inputs, multi-zone process variable acquisition
- Pulp & Paper / Water Treatment: Level transmitter arrays, flow meter signal conditioning, multi-loop PID input expansion
- Discrete Manufacturing: Force/torque sensor integration, servo drive feedback monitoring, quality inspection analog signal capture
Engineering Advantages
- High Channel Density: 16 channels per slot maximizes rack utilization and reduces total system footprint compared to lower-density alternatives
- Flexible Signal Conditioning: Software-configurable input type per channel group eliminates the need for external signal converters in mixed-signal installations
- Optical Isolation: Field-to-backplane isolation protects the CPU and communications bus from ground loops and transient surges common in industrial environments
- Drop-in Compatibility: Direct replacement for installed IC697ALG440 units with no firmware changes or rack rewiring required
- Long-term Availability: Konmask maintains verified stock of this module to support facilities with extended maintenance cycles and no planned platform migration
System Architecture & Signal Flow
The IC697ALG440 occupies a single slot in any Series 90-70 rack and communicates with the CPU module via the proprietary 90-70 backplane bus. Field wiring terminates at the module’s front-panel connector block. Analog signals are multiplexed through an internal MUX, conditioned, and converted by the 12-bit SAR ADC. Converted values are stored in the module’s input image table and transferred to the CPU scan cycle on each PLC sweep. Channel configuration (input type, range, alarm limits) is managed via the hardware configuration tool in Proficy Machine Edition or Logicmaster 90-70.
Signal Path: Field Sensor → Terminal Block → Input MUX → Signal Conditioning → 12-bit ADC → Optical Isolator → Backplane Bus → CPU Input Image Table
Sourcing & Quality Verification
- Source: Procured from verified industrial surplus channels, authorized distributors, and decommissioned plant equipment with documented service history
- Inspection Protocol: Each unit undergoes visual inspection (PCB, connectors, label integrity), functional power-on test, and backplane communication verification prior to listing
- Condition Grading: Units are graded as New Surplus (sealed OEM packaging), Refurbished (tested, cleaned, re-labeled), or Used-Tested (functional, cosmetic wear acceptable) — condition specified at time of order confirmation
- Warranty: 90-day functional warranty against DOA and latent defects; extended warranty available on request
- Counterfeit Mitigation: All GE Fanuc modules are cross-referenced against OEM part marking standards; suspect units are quarantined and not listed
Procurement Process
- Inquiry & Availability Confirmation: Contact us via the product page or email support@konmask.com with your required quantity and delivery timeline
- Quotation: Formal quotation issued within 1 business day including unit price, condition grade, lead time, and shipping options (DHL Express / FedEx International Priority)
- Order Confirmation: Purchase order or proforma invoice accepted; payment via T/T bank transfer or secure online checkout
- Quality Hold & Dispatch: Final inspection completed before dispatch; tracking number and packing list provided within 24 hours of shipment
- After-Sales Support: Technical support available for installation verification and backplane compatibility questions
Technical FAQ
Q: Is the IC697ALG440 compatible with the IC697CPM925 CPU?
A: Yes. The IC697ALG440 is compatible with all Series 90-70 CPUs that support analog I/O expansion, including the CPM925, CPX935, and CPX772 families. Verify slot assignment in your hardware configuration file.
Q: Can this module accept thermocouple or RTD inputs directly?
A: No. The IC697ALG440 accepts standard voltage and current analog signals only. For thermocouple or RTD inputs, use the dedicated IC697ALG320 (thermocouple) or IC697ALG230 (RTD) modules.
Q: What is the maximum cable length for field wiring?
A: GE recommends shielded twisted-pair cable with a maximum run of 30 meters (100 ft) for voltage inputs and 300 meters (1000 ft) for current loop (4–20 mA) inputs. Shield should be grounded at the panel end only.
Q: Does this module require a separate power supply?
A: No. The IC697ALG440 draws all operating power from the Series 90-70 backplane 5 VDC bus. No external auxiliary power connection is required.
Q: How do I configure channel input type?
A: Input type is configured in software via the hardware configuration block in Proficy Machine Edition (or Logicmaster 90-70 for legacy systems). No hardware jumpers are required for signal type selection.
© 2026 Konmask.com. All rights reserved.
Original Source: https://Konmask.com
Contact: support@konmask.com | +0086 19859288691
