Schneider OTB1 CODM9LP I/O Distributed Module for Island Systems

The Schneider OTB1 CODM9LP serves as a compact distributed I/O module for Advantys OTB networks. You can mount this unit directly onto a DIN rail near field devices. It captures discrete signals and drives output actuators locally. This module reduces wiring costs in large automation installations.

Technical Specifications and Hardware Layout

The Schneider OTB1 CODM9LP measures 90 mm in height. Its width reaches 70 mm, and the depth equals 55 mm. The Schneider OTB1 CODM9LP weighs approximately 0.20 kilograms. A single internal PCB holds all input filtering and output driving circuits. The module contains no energy storage capacitors or batteries. One 9-pin D-sub connector provides the communication bus interface. Two removable terminal blocks handle field wiring connections. Ten LEDs display power, communication, and I/O status.

I/O Specifications and Electrical Ratings

The Schneider OTB1 CODM9LP accepts input voltages from 0 V to 30 V DC. Each input draws a typical current of 5 mA at 24 V DC. The module filters input transitions with a 1 ms hardware delay. For outputs, each transistor channel switches 0.3 A at 24 V DC. The total output current per module reaches 1.2 A maximum. Consequently, this module drives small indicator lamps and relays effectively. Short-circuit protection on outputs prevents damage during wiring faults. Optical isolation separates the field side from the bus logic.

Installation and Communication Guidelines

You must mount the Schneider OTB1 CODM9LP on a DIN rail using the integral clips. Transitioning to wiring, use 0.5 mm² to 1.5 mm² stranded copper wire. The module supports baud rates up to 1 Mbit/s on the bus network. Ten front LEDs show power, bus activity, input, and output status clearly. The module automatically configures its address from the bus master. The operating temperature range extends from 0°C to 55°C reliably.