IC693MDL240G GE 120 VAC 16-Point Discrete Input Module

IC693MDL240G: Solving High-Count AC Input Panel Density

A control engineer faced a legacy packaging line where 16 AC pilot devices had to be monitored within a single slot of an existing Series 90-30 rack. The challenge was fitting 16 discrete 120 VAC inputs into a compact footprint without sacrificing isolation or response consistency. The IC693MDL240G addresses this exact scenario. It is a 16-point 120 VAC discrete input module from the GE Series 90-30 family, originally manufactured by GE Fanuc and now supported under Emerson ownership. The module groups all 16 inputs under one common, which simplifies field wiring and reduces terminal count in dense panels.

How the IC693MDL240G Handles 120 VAC Inputs

Each input channel accepts a voltage range of 0 to 132 VAC at 50/60 Hz. The on-state threshold sits between 74 and 132 VAC, while the off-state region is 0 to 20 VAC. This hysteresis prevents chatter from residual AC noise on long field runs. At rated voltage, input current draws 12 mA typical. The module consumes 90 mA from the 5 V backplane bus when all inputs are on. Isolation between the field side and logic side is rated at 1500 V RMS, which protects the backplane from transient overvoltage on AC signal lines. On response time is 30 ms maximum; off response time is 45 ms maximum.

Key Technical Specifications

• Input Points: 16, 120 VAC, one group with single common
• Input Voltage Range: 0 to 132 VAC, 50/60 Hz
• Input Current: 12 mA typical at rated voltage
• On-state Voltage: 74 to 132 VAC
• Off-state Voltage: 0 to 20 VAC
• Isolation: 1500 V RMS between field side and logic side
• Backplane Current: 90 mA from 5 V bus (all inputs on)
• Operating Temperature: 0 to +60°C ambient
• Protection Rating: IP20

Installation Notes for Series 90-30 Systems

Mount the IC693MDL240G in a single-slot position within a Series 90-30 I/O rack. The module dimensions are 124 × 30 × 114 mm, and weight is approximately 0.68 kg. Because all 16 inputs share one common, verify that field devices are referenced to the same AC supply leg. Keep wiring separated from high-frequency drive cables to avoid induced noise. The IP20 rating requires installation inside a controlled enclosure. Operating ambient must remain between 0 and +60°C, with relative humidity from 5 to 95% non-condensing. Storage temperature range is -40 to +85°C.

Reliability and Maintenance

Periodic inspection of terminal torque and enclosure filters supports long-term operation. The 1500 V RMS isolation barrier is a key reliability parameter; it limits logic-side exposure to field transients. This part belongs to a discontinued platform (GE Series 90-30), superseded by PACSystems RX3i (IC695 series). We stock remaining new and refurbished units. For precise matching to your existing Series 90-30 configuration, contact AutoDCSTech with your exact requirements.