Product Overview
When you need reliable distributed I/O for a CANopen network, the Schneider OTB1C0DM9LP from the Modicon OTB series delivers a compact, flexible solution. This I/O distributed module integrates 12 discrete inputs and 8 discrete outputs (2 solid state PNP source and 6 relay) in a single unit, simplifying wiring and reducing panel space. Designed for industrial environments, it supports both sink and source input logic and offers a rated supply voltage of 24 V DC with a power consumption of 19 W.
Technical Specifications Breakdown
Input Configuration
- Discrete Inputs: 12 inputs conforming to EN/IEC 61131 type 1, accepting NPN or PNP signals. Input voltage is 24 V DC with limits of 20.4...26.4 V.
- Input Current: 5 mA for I0...I1 and I6...I7; 7 mA for I2...I5 and I8...I11.
- Filtering: Electronic filtering time varies by channel and state, e.g., 0.035 ms for I0...I1 at state 1, and configurable filtering options of 0 ms, 3 ms, or 12 ms.
Output Configuration
- Discrete Outputs: 2 solid state PNP source outputs (300 mA each) and 6 relay outputs (2000 mA each). Relay outputs handle 240 V AC or 30 V DC.
- Response Time: Solid state outputs switch in 5 µs (both states); relay outputs in 300 µs.
- Protection: Output overvoltage protection at 38...40 V; leakage current ≤ 0.1 mA at state 0 for solid state.
Communication
- Bus Type: CANopen S20 with profile DS 401 V2.1, supporting data rates from 10 kbit/s to 1 Mbit/s. Maximum bus length reaches 1000 m at 50 kbit/s.
- Topology: Devices linked by daisy-chaining or tap junctions, with up to 63 slaves.
Industry Applications
In automated assembly lines, the OTB1C0DM9LP handles discrete sensor and actuator control efficiently. For example, its 12 inputs can monitor proximity sensors and limit switches, while the 6 relay outputs drive motor contactors or solenoid valves. The solid state outputs suit high-speed applications like small DC actuators, benefiting from the 5 µs response time. In packaging machinery, the module's CANopen interface enables seamless integration with higher-level controllers, reducing wiring complexity and downtime.
Installation & Setup Guidance
Mount the OTB1C0DM9LP on a 35 mm symmetrical DIN rail using clips, or on a panel or solid plate with a fixing kit. Use the removable screw terminal block for I/O connections. Ensure the supply voltage stays within 20.4...26.2 V DC and the input current does not exceed 700 mA at 26.2 V. For CANopen wiring, observe the specified bus lengths and tap-off lengths for your chosen data rate. The module supports up to 7 I/O expansion modules, allowing you to scale I/O capacity as needed.
Maintenance & Reliability
The OTB1C0DM9LP operates in 0...55 °C ambient temperatures and stores in -25...70 °C. Its IP20 protection suits clean, dry control cabinets. With insulation resistance ≥ 10 mOhm between I/O and earth terminals and between power supply and earth, the module provides robust isolation. For relay outputs, electrical durability reaches 500,000 cycles under various loads (e.g., AC-1 with 500 VA). Regular inspection of connections and environmental conditions helps maintain long-term reliability.
Compatibility & Integration
This module integrates natively with CANopen networks using the DS 401 V2.1 profile. It works with any CANopen master supporting CSMA/MA multimaster access per DS301 V4.02. The OTB1C0DM9LP can be daisy-chained or connected via tap junctions, with up to 64 devices per segment depending on segment length. Its 12 discrete inputs and 8 outputs make it a versatile building block for distributed control architectures.
Selection Guide & Purchasing Advice
Before ordering, verify your system's CANopen data rate and bus length requirements against the module's specifications. Ensure the supply voltage is 24 V DC and that the total current consumption (30 mA at 5 V DC at state 1 for relay outputs, plus 40 mA at 24 V DC) is within your power budget. The OTB1C0DM9LP is available from SpareTechPLC, a reliable supplier of industrial automation parts. Please verify current lifecycle status and availability with SpareTechPLC before ordering.
