IC693MDL241 GE 1C693MDL241 INPUT MODULE 24VAC/DC 16PT

GE Fanuc IC693MDL241 | Series 90-30 16-Channel 24VAC/VDC Positive/Negative Logic Input Module — 0–30V / 1500VAC Isolation / LED per Channel

16 Inputs That Accept Both AC and DC — Without Choosing One

The IC693MDL241 is one of the more versatile discrete input modules in the Series 90-30 range, precisely because it does not restrict the input power supply type. Most discrete input modules for the 90-30 are specified for either AC or DC — the IC693MDL241 accepts both 24VAC and 24VDC on the same module, with the same channel wiring. An installation that mixes AC-powered field devices (AC proximity sensors, AC level switches) with DC-powered devices (24VDC pushbuttons, DC proximity sensors) can connect both types to the same

IC693MDL241 without separate AC and DC input modules.

The positive/negative logic capability adds another dimension of flexibility. In DC mode, the module works with both NPN (negative logic / sinking) and PNP (positive logic / sourcing) sensors — the common terminal wiring determines which logic sense the inputs read. This single module handles the field sensor output types commonly found mixed in the same machine: PNP proximity sensors, NPN limit switches, and floating relay contacts can all connect to the IC693MDL241 with appropriate common terminal wiring.

All 16 inputs occupy a single group — they share one common power input terminal. Field power for all 16 inputs comes from one supply connection, and all inputs reference the same common. This simplifies panel wiring for installations where all 16 inputs operate from the same 24V AC or DC panel supply.

Each of the 16 input channels has a dedicated LED indicator on the module face. When an input is in the ON state (receiving the input signal above the 11.5V threshold), its LED illuminates. This per-channel visual status is the first diagnostic tool at the module — no monitoring software or meter connection is needed to confirm whether a sensor's signal is reaching the PLC.

Key Specifications

FAQ

Q1: Can the IC693MDL241 handle NPN (sinking) sensors and PNP (sourcing) sensors?

Yes. In DC mode, the IC693MDL241 supports both positive and negative logic wiring configurations. For PNP (sourcing) sensors, the sensor output supplies 24VDC to the input terminal — positive logic. For NPN (sinking) sensors, the sensor connects the input terminal to the common (0V) — negative logic. The common terminal wiring determines the logic sense. Confirm the sensor output type before wiring and set the common terminal accordingly.

Q2: All 16 inputs use one common terminal — can different input devices use different power sources?

No. The single group with a shared common terminal means all 16 inputs reference the same common. All field devices connected to this module must be powered from the same supply, with the same polarity. If field devices on different circuits or different power supplies need to be connected to the same 90-30 system, use a module with isolated groups (such as IC693MDL645 or similar) to keep the circuits separate.

Q3: The LED for an input is lit but the PLC input table does not show an ON state. What should be checked?

If the LED is illuminated, the module's input circuit is receiving the 24V signal. The fault is likely in the I/O address mapping in the PLC programme — the %I address assigned to this module's slot may not match the address the programme is reading. In the Series 90-30 hardware configuration, verify the module's slot position and the %I start address assigned to this module. Alternatively, confirm the module is seated correctly in the baseplate.

Q4: Can IC693MDL241 inputs be mixed — some in AC mode and some in DC mode?

No. All 16 inputs share one common terminal and one field power supply. If 24VAC is applied to the common, all 16 inputs operate in AC mode. If 24VDC is applied, all 16 operate in DC mode. Mixing AC and DC on the same module is not possible because they share a single common reference.

Q5: Where is the IC693MDL241 sourced?

Through the GE Fanuc Series 90-30 aftermarket — Emerson Automation-related distributors, tested surplus suppliers, and industrial automation repair services. The IC693MDL241 appears in several revision letters (A through E and beyond); all revisions serve the same function. The module is a commonly stocked item in the 90-30 aftermarket.