GE IC670MDL240K | Field Control 120VAC 16 Point Input Module

Description

• Brand: GE Fanuc
• Full Model Number: IC670MDL240K
• System/Series Family: GE Field Control Distributed I/O
• One-Sentence Core Function: 16-point grouped 120 VAC discrete input module for GE Field Control remote I/O stations
• Top 3 Hardcore Specs: 16 grouped AC inputs; 120 VAC nominal input; 15 mA maximum input current per point
• Stock Status: New surplus / fully tested refurbished

The GE IC670MDL240K is the K-revision of the IC670MDL240 120 VAC Grouped Input Module, providing a single group of 16 discrete AC inputs for the GE Field Control distributed I/O system. GE documentation specifies 120 VAC, 50/60 Hz operation and identifies the module as a grouped-input device rather than 16 individually isolated channels.

Module 3: Commercial-Technical Deep Dive

A failed Field Control input module can remove sixteen AC status signals from a remote I/O station at once. The GE IC670MDL240K is designed for that exact architecture, providing 16 grouped 120 VAC discrete inputs for switches, pushbuttons, limit devices, and other AC field contacts. The module derives its own logic power from the Bus Interface Unit, while an external 120 VAC source supplies the field input devices. GE specifies an input ON threshold of approximately 70–120 VAC, with the OFF range beginning around 0–20 VAC.

The signal timing is fast enough for normal discrete machine-status applications, but it is not a high-speed input card. Published GE/Field Control data gives approximately 12 ms typical ON response and 20 ms maximum, with approximately 25 ms typical OFF response and 40 ms maximum. Maximum input current is about 15 mA per point, while the module can draw about 77 mA from the BIU power supply for its own operation. Because all sixteen inputs belong to one grouped AC input architecture, the wiring common and external AC source must be reproduced correctly during replacement.

GE IC670MDL240K

Module 4: Compatibility & Installation Traps

Migration/Compatibility

• Replacement type: GE Field Control discrete input module
• Model: IC670MDL240K
• I/O configuration: 16 grouped discrete inputs
• Nominal field voltage: 120 VAC
• Frequency: 50/60 Hz
• Firmware flash: Not normally required for a same-model module replacement
• Logic rewrite: Normally not required
• Drop-in status: Generally suitable when replacing the same IC670MDL240 family module in a compatible Field Control station
• Host interface: Processing and configuration are handled through the Bus Interface Unit or associated Field Control controller architecture.
• Input isolation: No isolation between individual points within the group; the published module specification also lists approximately 1,500 VAC isolation for 1 minute at the applicable insulation boundary.

⚠️ Field Traps (Watch Out)

1. This is a grouped-input module, not 16 individually isolated AC inputs.
All 16 channels share the grouped electrical architecture. A field wiring error affecting the common can therefore influence multiple points at once. Confirm the common arrangement before reconnecting the terminal block.

2. Verify the actual AC input voltage.
The module is designed around 120 VAC, with the documented input operating range extending to approximately 132 VAC. Do not connect 24 VDC or other low-voltage field circuits simply because the Field Control station contains mixed I/O types.

3. Check response-time requirements before substitution.
The documented response is measured in milliseconds rather than microseconds. For ordinary permissives and status inputs this is usually appropriate, but applications involving fast event capture should be checked against the original control design.

4. The K suffix should be preserved.
Treat IC670MDL240K as the exact procurement identifier. Do not substitute a different Field Control input module solely because it also provides 16 points; voltage, grouping, polarity, and electrical interface can differ materially.

5. Field power and BIU power are separate functions.
The module receives logic power from the Bus Interface Unit, while the external 120 VAC supply powers the field input devices. A missing field supply can therefore produce all-OFF input indications without proving that the module electronics have failed.

Module 5: Quality Assurance SOP

Each GE IC670MDL240K unit should pass a documented pre-shipment inspection sequence:

• OEM anti-counterfeit visual inspection: Verify GE Fanuc identification, IC670MDL240K marking, transparent housing, LED layout, connector geometry, and manufacturing labels.
• Exact part-number verification: Match the complete catalog number against the purchase order and installed Field Control BOM.
• Revision inspection: Record the K revision and all visible secondary identification markings.
• Mechanical inspection: Check the housing, terminal interface, mounting features, module connector, LED window, and keying features for cracks, corrosion, contamination, or unauthorized repair.
• Power-path inspection: Check accessible module contacts and inspect for discoloration, damaged pins, or evidence of electrical overstress.
• Power-on self-test (POST): Install the module on an approved Field Control terminal block and BIU test station; verify normal power indication and diagnostic status.
• Input-channel verification: Apply controlled AC signals to all 16 channels and confirm correct individual ON/OFF indication.
• Threshold verification: Confirm representative channels switch ON within the documented 70–120 VAC region and remain OFF within the specified low-voltage region.
• Response-time verification: Measure representative ON and OFF transitions against the documented timing characteristics.
• Genius/Field Control communication handshake verification: Verify that the BIU correctly recognizes the module and that the complete station reports the expected 16-bit input data to the host.
• Diagnostic verification: Check module status and fault reporting through the BIU/test controller.
• Final QC: Record revision, channel-by-channel test results, threshold and timing measurements, and station recognition status; photograph the nameplate and package the module in ESD-safe protective material.

Module 6: CRO-Driven Buyer FAQ

1. What is GE IC670MDL240K?

The IC670MDL240K is a GE Field Control 120 VAC grouped discrete input module with 16 input points. It is designed for distributed Field Control I/O stations and receives its logic power from the Bus Interface Unit.

2. What voltage does IC670MDL240K accept?

The module is designed for 120 VAC, 50/60 Hz field inputs. Published specifications give an ON-state region of roughly 70–120 VAC, an OFF-state region of approximately 0–20 VAC, and an overall input range extending to about 132 VAC.

3. How many inputs does the IC670MDL240K have?

It provides 16 grouped discrete inputs. The channels are not individually isolated from one another, so the common wiring arrangement must be preserved.

4. What is the response time?

Published data specifies approximately 12 ms typical / 20 ms maximum ON response and 25 ms typical / 40 ms maximum OFF response. That makes it suitable for conventional machine and process status signals, but it should not be selected for applications requiring high-speed event capture.

5. Can IC670MDL240K be hot-swapped?

Do not assume hot-swap capability from the part number alone. Replacement should follow the applicable GE Field Control maintenance procedure and the installation requirements of the specific terminal block and Bus Interface Unit. Isolate the external AC field supply before disconnecting field wiring.