GE-FanucSeries One 24 VDC 2 A Output Module — 4 Isolated Fused Sink/Source Circuits, Per-Circuit LEDs, 8 References Consumed

Product Description

What this part is

This is a 24 VDC, 2 A output module for the GE Fanuc Series One family of programmable logic controllers. It provides four output points, each on its own isolated and separately fused circuit, driven from the Series One backplane and wired out through a screw terminal block on the faceplate.

Sink or source — the wiring decides, not the module:
The IC610MDL154A is a sink/source module. Whether a given circuit sinks or sources is determined by how the field load is wired relative to the DC supply, not by anything internal to the module.

In a sourcing arrangement the module supplies the positive side to the load and the load returns to 0 V — the module sits between supply positive and the device. In a sinking arrangement the load is fed positive directly from the supply and the module switches the return path to 0 V. Same module, same terminal, different external wiring, opposite polarity convention. This matters because plant standards differ, and imported machinery often assumes one convention where domestic panels assume the other.

Because all four circuits are individually isolated, the choice is per circuit rather than per card: some circuits can run sinking and others sourcing on the same module, referencing different supplies.

Published ratings

Operating voltage: 5–24 VDC, nominal 24 VDC. Output current: 2 A continuous per point, 8 A peak maximum. Points: 4 outputs, 4 individually isolated circuits. Isolation: each circuit may reference a different DC power source. Fusing: 5 A replaceable fuse per circuit, four total. Off-state leakage: less than 0.4 mA at 40 VDC. Backplane load: 12 mA at 9 VDC (2 unit loads) / 30 mA at 9 VDC (3 unit loads). Status indication: per-circuit LEDs on the logic side. Terminals: faceplate screw terminal block, each terminal accepts two #14 AWG or one #12 AWG. Outputs may be paralleled to increase available current.

Temperature derating: the 2 A on the nameplate is not always available:
The published derating runs as follows: at 10 °C, three circuits at 4 A; at 40 °C, one circuit at 4 A; at 50 °C, four circuits at 2 A; at 60 °C, two circuits at 2 A.

At 60 °C only two of the four circuits can carry the nameplate 2 A simultaneously. A panel running hot — no active cooling, summer ambient, drives dumping heat into the same enclosure — will not hold all four outputs at rating. Four circuits at 2 A each requires an internal panel temperature at or below 50 °C, which is a ventilation question rather than a module question. The usual symptom of getting it wrong is nuisance fuse operation in hot weather from what is really a thermal design problem.

Off-state leakage and cascaded logic inputs

Leakage is specified at under 0.4 mA at 40 VDC, which is low. In practical terms it is well below the current needed to hold in any normal contactor or relay coil, so a de-energised output stays de-energised. The exception is feeding this output into another high-impedance logic input rather than into a real load. A few hundred microamps into a high-impedance input can register as a true state, so cascading this module into another controller’s input card turns on that input’s off-state threshold, or on a bleed resistor.

Fusing and isolation as maintenance features

Each of the four circuits carries its own 5 A replaceable fuse. That is a real advantage over modules with a single common fuse or no field-replaceable protection: a short on one output takes out one circuit, not the card, and the repair is a fuse rather than a module. Combined with per-circuit isolation and per-circuit status LEDs, fault-finding on this module is quick — the LED shows what the logic commanded and the fuse shows what the field did.

Eight references for four outputs

This module occupies eight consecutive discrete output references in the Series One reference map while providing four physical outputs. The four references with no terminal behind them remain usable as internal coils in the program, and they still consume address space in a rack layout planned at one reference per point.

Platform compatibility

This module is for GE Fanuc Series One and Series One Plus controllers. The photographs on this listing show the actual faceplate terminal block.

Revisions and part number forms

The A suffix is the commonly traded revision and IC610MDL154 is the base number most dealers list against.

Quantity and configuration

Sold individually. One module per purchase.

Interchange guidance

Search forms include IC610MDL154A, IC610MDL154, IC610-MDL-154-A and IC610 MDL 154. Obsolete and discontinued with no factory replacement — Series One was retired well before the Emerson acquisition of GE Intelligent Platforms. Reman modules and board-level repair services remain available.