Description
GE Fanuc IC670ALG230 | 8-Channel Current Input Module
Dynamic Product Introduction
When analog process values become unstable, the first question is often whether the fault originates in the transmitter, field wiring, terminal block, or input electronics. The GE Fanuc IC670ALG230 is an 8-channel current input module designed to acquire 0–20 mA and 4–20 mA signals in a Field Control distributed I/O station.
The module converts incoming current signals into digital values for the controller through a compatible Bus Interface Unit. With 12-bit digital resolution, 5 µA analog resolution, and a typical conversion time of 60 µs per channel, the IC670ALG230 supports process measurement applications where multiple current transmitters need to be collected at a distributed I/O location.
This is a Field Control module—not a Genius I/O block from the IC660 family. That distinction matters during legacy system maintenance. The IC670ALG230 requires the appropriate BIU and terminal-block arrangement, and its grouped single-ended inputs should not be treated as individually isolated channels. Confirm the installed Field Control architecture before sourcing a replacement.
IC670ALG230
Key Technical Specifications
- Catalog Number: IC670ALG230
- Product Description: Analog current input module
- Input Channels: 8
- Input Configuration: Single-ended, grouped
- Configurable Input Ranges: 0–20 mA and 4–20 mA
- Digital Resolution: 12 bits, typical
- Analog Resolution: 5.0 µA
- Conversion Time: 60 µs per channel, typical
- Input Impedance: 249.75–250.25 Ω
- Maximum Input Current: 30 mA
- Overrange Diagnostic Threshold: 20.000–20.500 mA, depending on diagnostic behavior/configuration
- Open-Wire Detection: Available in 4–20 mA mode; approximately 2.0 mA threshold
- Maximum Accuracy Error at 25°C: ±0.05% full scale under specified conditions
- Nonlinearity: ±0.025% of full scale
- Temperature Coefficient: ±0.002% of reading per °C typical; ±0.005% maximum
- Power Supply: 18–30 VDC, nominal 24 VDC, supplied through BIU
- Current Draw from BIU: 51 mA maximum
- Isolation to Ground/Logic: 1,500 VAC for 1 minute; 250 VAC continuous
- Terminal Block Options: IC670CHS001, IC670CHS002, IC670CHS003
- System Interface: Field Control BIU
The published conversion time and accuracy are module specifications, not a guarantee of equivalent end-to-end controller scan performance. Actual process update behavior also depends on BIU configuration and host-system data handling.
Global Sourcing & Live-Test SOP
For a legacy IC670ALG230, the acceptance test should establish both analog measurement performance and compatibility with the existing Field Control station.
Inbound Verification
- Photograph the nameplate and confirm the exact catalog number.
- Inspect the housing, board edges, contacts, and terminal interface for damage or corrosion.
- Check for signs of unauthorized PCB rework or component replacement.
- Confirm that the module is compatible with the installed Field Control BIU.
- Verify the required terminal block style: box, barrier, or connector type.
- Review supplier traceability and available condition documentation.
- Record the module revision and any visible identifiers.
Functional Test
- Install the module in a compatible Field Control BIU and terminal-block test arrangement.
- Apply the specified 24 VDC-class supply through the BIU.
- Confirm normal module recognition and station communication.
- Connect a calibrated current source to all eight channels.
- Test representative points such as 0, 4, 12, and 20 mA, as applicable to the selected range.
- Verify scaling and digital values against the test current.
- Check channel behavior at the low end of the 4–20 mA range.
- Exercise open-wire diagnostics in 4–20 mA mode.
- Confirm overrange behavior within safe test limits.
- Record measured values and channel-level results.
Burn-In & Final Preparation
- Run an extended powered test in a compatible Field Control setup.
- Monitor for intermittent channel faults or communication errors.
- Record the module revision, BIU used, and test configuration.
- Package the module in ESD-safe material with connector protection.
- Clearly state the actual condition: used, refurbished, tested surplus, or factory sealed.
A 24-hour heat run may be included as a supplier-defined screening step. It should not be represented as an OEM-mandated test unless the applicable GE documentation specifies it.
Field Engineer’s Pitfall Guide
❗ Do Not Assume Channel-to-Channel Isolation
The uses grouped, single-ended inputs. Its isolation specification does not mean that each of the eight channels is independently isolated from the others. Check transmitter grounding and common wiring before integrating signals from different electrical domains.
❗ Match the BIU and Terminal Block
The is part of GE Fanuc Field Control. It requires a compatible Bus Interface Unit and appropriate terminal-block hardware. Do not treat it as a standalone Genius block or assume that an IC660-series terminal assembly will fit or function correctly.
❗ Validate the Current Range and Open-Wire Logic
The module supports both 0–20 mA and 4–20 mA input ranges. Open-wire detection is associated with 4–20 mA configuration; a current below approximately 2 mA can trigger the diagnostic. Confirm the original channel range and alarm configuration before commissioning a replacement.
Intent-Driven FAQ
What does the GE Fanuc do?
It is an 8-channel analog current input module in the GE Fanuc Field Control family. It reads 0–20 mA or 4–20 mA field signals and transfers the resulting digital values through a compatible BIU.
Is the a Genius I/O block?
No. It belongs to the Field Control product family and interfaces through a Field Control BIU. Do not confuse it with the IC660 Genius I/O block family.
What input signals does the support?
It supports configurable 0–20 mA and 4–20 mA current inputs. Verify the channel’s original range and scaling when replacing an installed module.
What is the resolution of the ?
The module is specified at 12-bit digital resolution and 5 µA analog resolution. Conversion time is approximately 60 µs per channel.
Can I hot-swap the ?
Do not assume hot-swap safety. Follow the site’s approved Field Control maintenance procedure and verify the effect of module removal on the BIU, I/O station, and process. Isolate field power where required by the installation procedure.
Is the still an OEM-current product?
The is a legacy Field Control component. Buyers should confirm current availability, revision, test status, and warranty terms with the supplier rather than assume new OEM production or support.
What should I verify before buying a replacement?
Confirm the exact catalog number, module condition, compatible BIU, terminal-block style, 0–20/4–20 mA configuration, and documented channel testing. For refurbished inventory, obtain the warranty duration and return terms in writing.
