Schneider OTB1C0DM9LP CANopen I/O Module

Schneider Electric OTB1C0DM9LP CANopen Distributed I/O Module

Product Introduction

The OTB1C0DM9LP belongs to the Schneider Electric Modicon OTB family, which is purpose-built for distributed I/O applications in industrial automation. This module connects to a CANopen bus network, enabling remote control and monitoring of field devices. Its compact design and versatile I/O mix make it particularly suitable for machine builder applications where space is limited. Additionally, the OTB1C0DM9LP supports a wide range of bus speeds and cable lengths, giving system designers flexibility in network topology. Whether you need to add remote I/O points or expand an existing CANopen network, this module delivers reliable performance in demanding environments.

Technical Specifications

Digital Inputs

The OTB1C0DM9LP provides 12 discrete inputs that comply with EN/IEC 61131 type 1 standards. These inputs accept both sink and source logic, which simplifies integration with various sensor types. Each input operates at 24V DC with a voltage range of 20.4 to 26.4V. The input current varies by channel group: I0–I1 and I6–I7 draw 5 mA, while I2–I5 and I8–I11 draw 7 mA. Input impedance also differs between groups, with 5.7 kOhm for the first group and 3.4 kOhm for the second. Electronic filtering time ranges from 0.035 ms to 0.15 ms, depending on the channel and state transition. Furthermore, you can configure additional filtering time options of 0 ms, 3 ms, or 12 ms to adapt to noisy environments. Two of these inputs also serve as 32-bit counters with selectable frequencies of 5000 Hz or 20000 Hz, providing added functionality for speed monitoring or pulse counting applications.

Digital Outputs

This module features a mixed output configuration with 2 solid-state PNP outputs and 6 relay outputs. The solid-state outputs deliver fast switching with response times of just 5 µs and support currents up to 300 mA. They include overvoltage protection from 38 to 40V and maintain a low leakage current below 0.1 mA at state 0. Meanwhile, the relay outputs handle higher loads at 2000 mA per channel and support both AC and DC voltages up to 240V AC or 30V DC. Relay response times are 300 µs for both on and off transitions, with a contact bounce time of ≤1 ms. Electrical durability is rated at 500,000 cycles for various AC and DC load conditions, ensuring long service life in typical industrial applications. The OTB1C0DM9LP also includes two pulse generator outputs (RPLS and RPWM) running at 7 kHz for PWM control or pulse train generation, enhancing its versatility for motion or actuator control.

Communication and Bus Features

The OTB1C0DM9LP communicates via a CANopen bus using a SUB-D 9 connector. It supports transmission speeds from 10 kbit/s up to 1 Mbit/s, with bus lengths that vary according to the selected baud rate. For instance, at 1 Mbit/s the maximum bus length is 20 meters, while at 10 kbit/s it extends to 5000 meters. This flexibility allows the module to fit both small machine networks and large distributed systems. The bus protocol conforms to DS 401 V2.1 and DS301 V4.02, using CSMA/MA multimaster with priority access. Up to 63 slave devices can be connected on the network, and the module integrates seamlessly with the S20 CANopen profile. Daisy-chaining or tap junction topologies are both supported, making network expansion straightforward.

Power Supply and Consumption

Power for the OTB1C0DM9LP comes from a 24V DC supply with an operating range of 20.4 to 26.2V. Current consumption varies by output type and state: relay outputs draw 30 mA at 5V or 40 mA at 24V when active, and only 5 mA at 5V when inactive. The solid-state outputs draw additional current depending on load. Total power consumption for the module reaches 19W maximum. Inrush current can spike up to 50A for the supply circuit and 1A for solid-state outputs, so proper power supply sizing is recommended to avoid nuisance tripping. The module also includes immunity to microbreaks up to 10 ms, maintaining operation during brief power disturbances.

Mechanical and Environmental Parameters

Weighing just 0.195 kg, the OTB1C0DM9LP is lightweight and easy to install. It mounts on a 35 mm symmetrical DIN rail using clips, or alternatively on a panel or solid plate using a fixing kit. The module is rated IP20, making it suitable for installation inside control cabinets. Operating temperature ranges from 0 to 55°C, while storage temperature extends from -25 to 70°C. Relative humidity tolerance spans 30 to 95% without condensation. Vibration resistance is rated at 0.075 mm (10–57 Hz) and 1 gn (57–150 Hz) when mounted on a DIN rail. Shock resistance meets 15 gn for 11 ms, complying with EN/IEC 61131 standards. The module also carries CE marking and UL/CSA certifications, including Class I Division 2 Groups A–D for hazardous locations. Insulation resistance is ≥10 mOhm between I/O and earth terminals, and dielectric strength reaches 500V for I/O-to-earth and power-to-earth circuits. EMC immunity includes 4 kV contact/8 kV air electrostatic discharge, 10 V/m radiated field resistance, and 2 kV fast transient immunity for the supply circuit.

Installation Guide

Installing the OTB1C0DM9LP requires attention to bus termination, power wiring, and network configuration. First, mount the module on a 35 mm DIN rail using the integrated clips, ensuring a secure fit. Next, connect the 24V DC power supply to the designated terminals, observing correct polarity. Then, wire the CANopen bus cable to the SUB-D 9 connector, using two twisted shielded pairs for optimal signal integrity. Remember to install termination resistors at both ends of the main bus segment. After that, connect field devices to the removable screw terminal block for inputs and outputs. Finally, configure the module's node ID and baud rate using DIP switches or software tools, depending on your network requirements. Power up the system and verify the status LEDs—green for PWR and RUN, red for ERR—to confirm normal operation.

Packaging List

• Schneider Electric OTB1C0DM9LP I/O Distributed Module (1 unit)

• Removable screw terminal block (pre-installed)

• Product documentation and installation guide

Note: CANopen cables, termination resistors, power supplies, and fixing kits for panel mounting are sold separately.

FAQ

1. What is the maximum number of OTB1C0DM9LP modules I can connect on a single CANopen network?
You can connect up to 63 slave devices on a CANopen network. However, the total bus length and speed must be adjusted according to the baud rate table provided in the technical specifications.

2. Can the OTB1C0DM9LP handle both NPN and PNP sensors?
Yes, the inputs are configurable for sink or source logic, allowing connection to both NPN (sinking) and PNP (sourcing) sensors without additional interface components.

3. What is the difference between the solid-state outputs and relay outputs on the OTB1C0DM9LP?
Solid-state outputs switch much faster (5 µs response) and are ideal for PWM or high-frequency applications, but limit current to 300 mA. Relay outputs handle higher currents (2A) and support both AC and DC loads, but switch slower (300 µs) and have mechanical life limits.

4. How do I configure the node ID and baud rate for the OTB1C0DM9LP?
Configuration is typically performed via DIP switches located on the module. Consult the product manual for the exact switch settings corresponding to each node ID and baud rate combination.

5. What shipping carriers do you use for the OTB1C0DM9LP?
We ship globally using FedEx, UPS, and DHL to ensure fast and reliable delivery. Tracking information will be provided upon dispatch.