G4F-INTA

Description

8-point interrupt (digital input) module for the LS G4/GM4 PLC family; accepts standard 24 VDC inputs. Designed for real-time event/interrupt handling in control programs.

The Polar Energy Assessment:

G4F-INTA is an 8-point input/interrupt module that provides dedicated interrupt inputs to the GM4/G4 PLC platform. The module is listed in LS product catalogues with nominal 24 VDC input rating and the usual industrial input characteristics (rated input current, operating range). Use it where low-latency, prioritized input handling is required.

Pros

• 8 interrupt inputs for event-driven logic or high-priority signals.
• Matches LS G4 system electrical characteristics and mounting form factor.

Limitations

• Limited to 8 points; multiple modules needed for larger interrupt counts.
• Implementation requires interrupt-aware PLC program logic and careful debounce/conditioning.

Typical use cases

• Machine safety or event detection where immediate PLC response is required (e.g., E-stop chain, high-priority fault inputs).
• Sequential machines that require hardware interrupts for position or limit switches.
• Retrofit projects adding prioritized inputs to an LS G4 control CPU.