Emerson / GE Fanuc IC694MDL231B PACSystems RX3i 240 VAC Isolated Input Module
An eight-point isolated 240 VAC input module; the B revision remains part of the replacement identity.
Product Overview
Emerson / GE Fanuc IC694MDL231B is a PACSystems RX3i 240 VAC Isolated Input Module identified by the complete submitted catalog string. The suffix and revision characters remain part of the supply identity.
Selection of IC694MDL231B should follow the installed label, rack or controller record, field wiring and the verified technical details below; a neighboring family number is not treated as interchangeable.
Technical Register
Operating Features
Eight isolated input points receive discrete 240 VAC field states for the controller.
Isolation between field channels supports applications that require separate AC input circuits.
The IC694 form factor installs in the documented RX3i serial expansion or compatible IC694-series rack position.
The B suffix is kept visible so purchasing and maintenance records do not collapse different hardware releases.
Applications
- Monitoring 240 VAC limit switches, auxiliary contacts and machine-status circuits.
- Like-for-like maintenance of an installed IC694MDL231B module.
- Retrofit work where the existing field voltage, isolation arrangement and terminal map are preserved.
Service Control
- Isolate field power and record every point, neutral/reference conductor and terminal position.
- Compare the complete IC694MDL231B label with the rack configuration and spare record.
- Inspect the terminal assembly and conductors before transferring them to the replacement.
- Restore one circuit at a time, then verify PLC indication, field state and all related interlocks.
FAQ
How does IC694MDL231B differ from lower-voltage AC input modules?
IC694MDL231B is identified as an isolated 240 VAC input module; a 120 VAC or DC input catalog number is not a direct substitute.
Can the B suffix on IC694MDL231B be ignored when ordering a spare?
No. Keep the B release on the enquiry and compare the installed label, approvals and hardware records before replacement.
What wiring evidence should accompany an IC694MDL231B enquiry?
Provide terminal photographs, the rack slot, field voltage, point schedule, neutral/reference arrangement and the complete module label.
Should IC694MDL231B be tested by forcing field voltage at the rack?
Only under an approved isolated test procedure. Verify conductor identity and voltage class before energizing any individual point.
What proves IC694MDL231B is ready after replacement?
Confirm all eight point states, isolation boundaries, field-voltage readings, controller diagnostics and every affected machine interlock.
