IC693MDL230C GE 120 VAC 8-Channel Isolated Input Module

What Is the IC693MDL230C Input Module?

The IC693MDL230C is an 8-channel isolated discrete input module for the GE Series 90-30 platform. It accepts 120 VAC field signals and converts them to backplane logic for the CPU. Each channel is individually isolated, so field wiring faults stay contained. The module occupies a single slot. Emerson now owns the GE Fanuc and GE Intelligent Platforms product lines, so this revision C unit carries the original GE design lineage under current Emerson ownership. For engineers maintaining existing 90-30 racks, this module delivers engineering-grade precision in signal acquisition. However, the IC693MDL230C is discontinued (End of Sale), last verified in September 2026. This part has been discontinued by the manufacturer. Migrate to PACSystems RX3i (IC695 series); we stock remaining new and refurbished units.

IC693MDL230C Technical Specifications

• Channels: 8 isolated discrete inputs
• Rated Voltage: 120 VAC
• Logic Type: AC input
• Operating Temperature: 0 to +60°C ambient
• Slot Width: Single slot
• Series: GE Series 90-30
• Backplane Current: Not available — refer to official datasheet
• Input Voltage Range: Not available — refer to official datasheet

The isolated channel design is the defining electrical characteristic here. Because each input is galvanically separated, a shorted field device on one channel will not corrupt readings on adjacent channels. That matters in panels where 120 VAC pilot devices share a common wireway with sensitive logic wiring.

Why Isolation Matters in 120 VAC Input Design

Consulting engineers specify isolated AC input modules when field noise is unavoidable. Motor starters, solenoids, and contactors couple transients onto 120 VAC control circuits. The IC693MDL230C isolates each of its eight channels, so common-mode disturbance on one loop does not propagate. Consequently, the CPU receives clean, verified state transitions rather than spurious edges. In addition, the single-slot footprint preserves rack space for analog or specialty modules. The 0 to +60°C ambient rating suits most enclosed industrial cabinets. Nevertheless, confirm the actual input voltage range and backplane current draw against the official datasheet, since neither is published in the available data.

Applications and Integration

Typical use cases include pilot device monitoring, limit switch feedback, and status input from 120 VAC relays. Because the module is AC-input logic, it pairs naturally with legacy 120 VAC control circuits still common in North American plants. When integrating into a Series 90-30 rack, verify slot assignment and backplane compatibility with the existing CPU. If the application migrates to a modern control platform, an external gateway or connection module may be required. Confirm exact cables and gateway compatibility with AutoDCSTech before purchase.

Availability and Support

Given the discontinued status, replacement planning deserves attention. AutoDCSTech can help identify functionally equivalent options or locate remaining stock. Contact AutoDCSTech with your exact requirements for precise matching.