Process Control & Drive Signal Solution – GE IC694ALG390 | Series 90-70 PLC
Where This Product Is Used
The GE IC694ALG390 is an 8-channel analog output module designed for the GE Series 90-70 PLC platform. It is deployed wherever a programmable controller must command real-world actuators with precision analog signals — converting digital setpoints into continuous 4–20 mA current loops or 0–10 V voltage outputs.
Typical deployment environments include:
- Oil & Gas Processing Plants — driving control valves, pressure regulators, and flow control loops in upstream and downstream operations.
- Chemical & Petrochemical Facilities — modulating pump speeds, reactor temperature setpoints, and dosing systems via 4–20 mA signals to field instruments.
- Power Generation & Utilities — providing analog reference signals to AVRs (Automatic Voltage Regulators), turbine governors, and boiler feed control systems.
- Water & Wastewater Treatment — controlling variable-speed drives on pumps and blowers, and commanding chemical dosing pumps with precise analog outputs.
- Automotive & Heavy Manufacturing — sending setpoint signals to servo amplifiers, proportional hydraulic valves, and tension control systems on production lines.
- Pulp & Paper Mills — regulating steam pressure, stock flow, and dryer section temperature through distributed analog output channels.
- Food & Beverage Processing — controlling conveyor speeds, filling valve positions, and pasteurization temperature loops in hygienic production environments.
Technical Specifications
The following specifications are based on GE Automation & Controls published documentation for the IC694ALG390. Do not use these values as a substitute for the official GE datasheet for safety-critical applications.
- Part Number: IC694ALG390
- Platform: GE Series 90-70 PLC (IC694 rack-mount)
- Output Channels: 8 isolated analog output channels
- Output Signal Types: 4–20 mA (current) / 0–10 V (voltage), software-selectable per channel
- Resolution: 12-bit (0–4095 counts)
- Accuracy: ±0.1% of full scale (typical)
- Update Rate: All 8 channels updated each PLC scan cycle
- Isolation: Channel-to-backplane isolation provided
- Power Consumption: Supplied via Series 90-70 backplane (5 VDC bus)
- 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
- Form Factor: Single-slot IC694 rack module
- Weight: Approx. 300 g
- Certifications: UL Listed, CE Marked
Why Engineers Specify This Model
When process engineers and controls specialists select an analog output module for a Series 90-70 system, the IC694ALG390 is the standard choice for multi-channel applications. Here is why:
- 8 Channels in a Single Slot — maximizes rack density and reduces wiring complexity compared to single- or dual-channel alternatives, lowering total installed cost.
- Dual Signal Mode Flexibility — current (4–20 mA) and voltage (0–10 V) outputs are software-configurable, eliminating the need to stock separate module variants for different field device types.
- 12-Bit Resolution — provides 4,096 discrete output steps, delivering the fine-grained control resolution required for tight PID loops in temperature, pressure, and flow applications.
- Scan-Synchronous Updates — all 8 channels are refreshed every PLC scan, ensuring deterministic output timing critical for coordinated multi-axis or multi-loop control.
- Direct GE Logicmaster / Proficy ME Programming — native integration with GE’s programming environments means no custom function blocks or driver development; engineers configure channels directly in the hardware configuration tool.
- Proven Long-Term Availability — the Series 90-70 platform has been in service for decades; the IC694ALG390 remains available as a new, refurbished, and tested spare, protecting long-lifecycle plant investments.
Complete System Bill of Materials
The IC694ALG390 operates within the GE Series 90-70 ecosystem. A complete analog output subsystem typically includes the following components:
- IC694ALG390 — 8-Channel Analog Output Module (this item)
- IC693CPU374 / IC694CPU310 / IC694CPU315 — Series 90-70 CPU module
- IC694CHS392 / IC694CHS398 — Series 90-70 rack (5-slot or 9-slot)
- IC694PWR330 / IC694PWR331 — Series 90-70 power supply module
- IC694ACC300 — Analog terminal block / field wiring assembly (recommended)
- IC693CMM302 / IC694CMM302 — Communications module (Ethernet/Serial, if required)
- GE Proficy Machine Edition (ME) — Programming and configuration software
Contact support@konmask.com to source any of the above companion parts.
Compliance & Industry Standards
- UL 508 — Industrial Control Equipment (UL Listed)
- CE Marking — EMC Directive 2014/30/EU; Low Voltage Directive 2014/35/EU
- IEC 61131-2 — Programmable Controllers: Equipment Requirements and Tests
- RoHS Compliant — Restriction of Hazardous Substances (where applicable to production date)
- ATEX / IECEx — Module itself is not ATEX rated; use appropriate barriers for hazardous area field wiring
Quality Assurance & Sourcing
At Konmask.com, every GE IC694ALG390 unit we supply undergoes a structured quality process before shipment:
- Visual Inspection — PCB, connectors, and housing checked for physical damage, corrosion, or counterfeit indicators.
- Functional Power-On Test — module is energized in a Series 90-70 test rack and all 8 output channels are verified against specification.
- Firmware Version Check — firmware revision is documented and disclosed to the buyer prior to shipment.
- Anti-Static Packaging — shipped in ESD-safe bags with foam cushioning inside a double-wall carton.
- Traceability Documentation — each unit is accompanied by a test report and, where available, original GE documentation.
We source from authorized distributors, OEM decommissions, and verified industrial surplus channels. Counterfeit parts are never knowingly supplied.
How to Source This Part
Sourcing legacy GE Series 90-70 modules requires a supplier with verified stock and technical expertise. Follow these steps to place an inquiry with Konmask.com:
- Confirm the Part Number — verify the full part number on the module label: IC694ALG390. Note any suffix letters (e.g., IC694ALG390D) which may indicate a firmware revision.
- State Your Required Quantity — indicate whether you need a single spare or multiple units for a plant-wide upgrade.
- Specify Condition Preference — new-in-box (NIB), factory-refurbished, or tested-used. We will advise on availability and lead time for each.
- Submit Your Inquiry — email support@konmask.com or call +0086 19859288691. Include your delivery country for freight and lead time estimation.
- Receive Quotation — we respond to all inquiries within 1 business day with pricing, availability, and shipping options.
Application-Specific FAQ
Q: Can the IC694ALG390 drive a 4–20 mA loop-powered transmitter directly?
A: No. The IC694ALG390 is an active current source output module — it sources the 4–20 mA signal. Loop-powered (2-wire) transmitters are input devices. For analog input from transmitters, you need the IC694ALG221 or IC694ALG222 input modules.
Q: Is the IC694ALG390 compatible with the Series 90-30 (IC693) rack?
A: No. The IC694 form factor is specific to the Series 90-70 rack. Series 90-30 uses IC693-prefix modules with a different backplane connector and slot pitch. The two platforms are not physically interchangeable.
Q: What is the maximum cable length for the 4–20 mA output to a field device?
A: GE does not specify a maximum cable length for the current output. In practice, 4–20 mA current loops are highly noise-immune and can drive loads over several hundred meters of shielded twisted-pair cable, provided total loop resistance (cable + load) remains within the module’s compliance voltage specification.
Q: Can I mix current and voltage output channels on the same IC694ALG390 module?
A: Yes. Each of the 8 channels is independently configurable as either 4–20 mA or 0–10 V via the GE Proficy ME hardware configuration. You can assign different output types to different channels on the same module.
Q: What happens to the analog outputs if the PLC CPU faults or goes to STOP mode?
A: Output behavior on CPU fault is configurable in the hardware configuration: channels can be set to hold last value, go to a user-defined safe state value, or go to zero. This must be configured during commissioning to match your process safety requirements.
Q: Do you provide a warranty on the IC694ALG390?
A: Yes. All units supplied by Konmask.com carry a minimum 90-day functional warranty. Extended warranty options are available — contact us for details.
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Original Source: https://Konmask.com
Contact: support@konmask.com | +0086 19859288691
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