I/O modules

Product Overview

This input module interfaces field devices directly with the Series 90-30 programmable controller. It accepts 120 VAC signals from pushbuttons, limit switches, and proximity sensors. The IC693MDL231 converts these AC inputs into logic-level signals for the CPU. It features eight isolated input points for reliable operation in noisy industrial environments. Each point provides optical isolation to protect the backplane from voltage transients.

Technical Specifications

The IC693MDL231 measures 12.5 cm in height and 11.4 cm in depth. It weighs approximately 0.32 kg, making it one of the lighter modules in the Series 90-30 lineup. This module draws 150 mA from the +5 VDC backplane supply. Its eight input points operate at 120 VAC nominal with a range of 85 to 132 VAC. Each channel supports a frequency of 47 to 63 Hz for standard AC power systems. The input current per point measures 12 mA typical at rated voltage. On-state voltage threshold sits at 74 VAC minimum, while off-state voltage remains below 20 VAC. The module responds to input changes within 15 ms typical. It also features LED indicators for each channel’s on/off status.

Input Characteristics and Wiring

This module uses a single common terminal for all eight input points. It accepts either sinking or sourcing field devices without additional configuration. The IC693MDL231 incorporates RC snubber circuits across each input for noise suppression. These circuits reduce false triggering from contact bounce and electrical interference. You can connect field wiring using 0.5 to 1.5 mm² conductors.

Physical and Electrical Parameters

Installation and Configuration

Installing the IC693MDL231 requires a standard Series 90-30 I/O rack with an available slot. Insert the module and secure it with the retaining screws at top and bottom. The CPU automatically recognizes the module upon power-up. You can configure input filtering times through the programming software. This feature allows you to adjust response times between 1 ms and 15 ms. The module supports hot-insertion in compatible systems without powering down the rack.

Applications and Use Cases

This input module suits conveyor systems, packaging lines, and material handling equipment. It reads AC limit switches, pilot devices, and selector switches in control panels. The IC693MDL231 also works with motor starter auxiliary contacts and relay outputs. Its eight-point density makes it ideal for distributed I/O applications.

Details