GE IC694ALG392A – 8-Channel Analog Output Module | Series 90-30 PLC Platform
Engineering Background
The IC694ALG392A is a high-density analog output module designed for GE Fanuc’s Series 90-30 programmable logic controller platform — one of the most widely deployed mid-range PLC architectures in process and discrete manufacturing. Engineered for deterministic signal delivery, this module provides eight independently configurable analog output channels capable of driving current loops and voltage loads with 12-bit resolution.
Product Positioning
Targeted at OEM machine builders, system integrators, and MRO procurement teams, the IC694ALG392A serves as the primary analog interface between the Series 90-30 CPU and field devices such as variable-frequency drives, control valves, proportional solenoids, and analog-input instrumentation. Its slot-based architecture and hot-swap compatibility with the IC694 backplane make it a preferred choice for both greenfield installations and legacy system expansions.
Complete Technical Specifications
| Part Number | IC694ALG392A |
| Manufacturer | GE Fanuc / General Electric |
| Platform | Series 90-30 (IC694 family) |
| Module Type | Analog Output |
| Number of Channels | 8 (independently configurable) |
| Output Signal Types | 4–20 mA (current) / 0–10 VDC (voltage) |
| Resolution | 12-bit (1 in 4,096) |
| Output Range (Current) | 0–20 mA, 4–20 mA |
| Output Range (Voltage) | 0–10 VDC, ±10 VDC |
| Load Impedance (Current) | ≤ 600 Ω |
| Load Impedance (Voltage) | ≥ 1 kΩ |
| Accuracy | ±0.1% of full scale (at 25°C) |
| Update Rate | Synchronous with PLC scan cycle |
| Backplane Bus | IC694 Series 90-30 backplane |
| Power Consumption | Supplied via backplane (5 VDC) |
| Operating Temperature | 0°C to +60°C |
| Storage Temperature | -40°C to +85°C |
| Relative Humidity | 5% to 95% non-condensing |
| Dimensions (H × W × D) | Standard IC694 single-slot form factor |
| Weight | Approx. 500 g |
| Certifications | UL Listed, CE Marked |
| RoHS Compliance | Refer to GE Fanuc product bulletin |
Proven Application Environments
- Process Control: Valve positioner control in chemical, oil & gas, and water treatment plants using 4–20 mA loops
- Drive Control: Speed reference signals to VFDs (Variable Frequency Drives) in conveyor, pump, and fan systems
- HVAC Automation: Damper actuator and chiller setpoint control in building management systems
- Discrete Manufacturing: Proportional solenoid valve control in hydraulic and pneumatic press lines
- Power Generation: Turbine governor and excitation system analog setpoint interfaces
- Food & Beverage: Flow rate and temperature setpoint delivery in CIP and pasteurization systems
- MRO Replacement: Drop-in replacement for failed IC694ALG392 (earlier revision) in existing Series 90-30 racks
Engineering Advantages
- High Channel Density: 8 independent channels in a single backplane slot — reduces rack space and wiring complexity versus discrete analog transmitters
- Dual Output Mode: Each channel software-configurable for current or voltage output without hardware jumpers, enabling flexible field wiring
- 12-Bit Resolution: Provides 4,096 discrete output steps for fine-grained process control, meeting ISA-5.1 analog signal standards
- Scan-Synchronous Update: Output values updated every PLC scan cycle, ensuring deterministic response to CPU logic changes
- Backplane-Powered: No external 24 VDC field power supply required for module logic — simplifies panel design
- Backward Compatible: Fully interchangeable with IC694ALG392 (Rev. A predecessor) in existing Series 90-30 configurations
- Diagnostic Reporting: Module-level fault detection reported to CPU fault table for rapid maintenance response
System Architecture & Signal Flow
The IC694ALG392A occupies a single I/O slot in any IC694 Series 90-30 baseplate (IC694CHS392, IC694CHS397, etc.). The CPU communicates with the module via the Series 90-30 backplane bus. During each PLC scan, the CPU writes 12-bit output words to the module’s internal DAC (Digital-to-Analog Converter) registers. The DAC converts these digital values to proportional analog signals (current or voltage) delivered to field terminals on the module’s removable terminal block.
Signal flow: CPU Output Register → Backplane Bus → Module DAC → Field Terminal → Field Device (VFD / Valve / Actuator)
Channel configuration (range, mode, fault state) is performed via the Series 90-30 hardware configuration tool in Proficy Machine Edition (PME) or the legacy Logicmaster 90-30 software.
Sourcing & Quality Verification
- Origin: Sourced from authorized GE Fanuc distributors and verified OEM decommission channels
- Inspection Protocol: Each unit undergoes visual inspection (PCB, connectors, label integrity), functional power-on test, and output channel verification prior to shipment
- Revision Verification: Revision suffix (A) confirmed against GE Fanuc product bulletin IC694ALG392-PA-001
- Packaging: Anti-static bag + foam-lined carton; ESD-safe handling throughout fulfillment
- Warranty: 90-day operational warranty against manufacturing defects; DOA replacement within 7 business days
- Counterfeit Mitigation: Part number, date code, and PCB markings cross-referenced against GE Fanuc authentic component database
Procurement Process
- Confirm Compatibility: Verify your Series 90-30 baseplate model and available slot count. IC694ALG392A requires one standard I/O slot.
- Request Quote: Contact support@konmask.com for volume pricing, lead time, and export documentation (CO, test report).
- Place Order: Purchase directly via this listing or submit a PO to our sales team. Net-30 terms available for qualified accounts.
- Shipping: DHL / FedEx Express worldwide. Typical dispatch within 1–2 business days of payment confirmation.
- Customs & Documentation: Commercial invoice, packing list, and HS code 8537.10 provided as standard. CITES/EAR documentation available on request.
Technical FAQ
Q: Is IC694ALG392A compatible with IC694ALG392 (no suffix)?
A: Yes. The “A” suffix denotes a minor hardware revision with no change to software configuration or backplane pinout. The modules are functionally interchangeable.
Q: Can I mix current and voltage outputs on the same module?
A: Yes. Each of the 8 channels is independently configurable for current (4–20 mA) or voltage (0–10 V / ±10 V) output via the hardware configuration in Proficy Machine Edition.
Q: What happens to outputs on PLC fault or CPU stop?
A: Each channel can be configured to hold last value, go to a user-defined fault state value, or default to 0 mA / 0 V. Fault state is set per-channel in the hardware configuration.
Q: Does this module require external 24 VDC field power?
A: Module logic is backplane-powered (5 VDC). However, current loop field devices typically require their own 24 VDC loop supply — the module does not source loop power.
Q: What software is required for configuration?
A: GE Proficy Machine Edition (PME) v8.0+ or Logicmaster 90-30 v9.05+. Hardware configuration is performed offline and downloaded to the CPU.
Q: Can I order in bulk or request a test report?
A: Yes. Contact support@konmask.com for bulk pricing, functional test reports, and export compliance documentation.
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