Schneider OTB1S0DM9LP Distributed I/O Modules
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Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Schneider Electric |
| Model | OTB1S0DM9LP |
| Product Type | Distributed I/O Module |
| Product Series | Modicon OTB |
| Communication Interface | Non-isolated serial link, RS485 |
| Communication Protocol | Modbus RTU/ASCII, master/slave |
| Communication Speed | 1.2–38.4 kbit/s |
| Communication Connector | 2 × RJ45 connectors connected in parallel |
| Digital Inputs | 12 channels |
| Digital Input Voltage | 24 V DC |
| Input Voltage Range | 20.4–26.4 V DC |
| Input Logic | Sink or source; supports compatible NPN/PNP sensors |
| Digital Outputs | 8 channels: 2 solid-state PNP outputs and 6 relay outputs |
| Solid-State Output Voltage | 24 V DC |
| Solid-State Output Current | 300 mA per output; maximum 360 mA under specified conditions |
| Relay Output Rating | Up to 2 A per output, subject to load and operating conditions |
| Relay Switching Voltage | Up to 240 V AC or 30 V DC, according to the specified output ratings |
| High-Speed Counting Inputs | 2 channels |
| Counting Capacity | 32-bit |
| Counting Frequency | Up to 20 kHz, depending on input configuration |
| Pulse Generator | 2 channels |
| Pulse Output Frequency | Up to 7 kHz |
| Expansion Capacity | Supports up to 7 I/O expansion modules |
| Rated Supply Voltage | 24 V DC |
| Power Consumption | 19 W |
| Mounting Method | 35 mm symmetrical DIN rail or panel mounting with the appropriate fixing kit |
| Protection Rating | IP20 |
| Operating Temperature | 0–55°C |
| Storage Temperature | -25–70°C |
| Humidity | 30–95%, non-condensing |
| Dimensions | 55 × 90 × 70 mm |
| Weight | 0.19 kg |
FAQ
Q1: What is the main function of the Schneider Electric OTB1S0DM9LP Distributed I/O Module?
The OTB1S0DM9LP is a distributed I/O interface in the Modicon OTB series. It collects signals from field sensors and sends control signals to actuators through its built-in digital inputs and outputs. Its serial Modbus interface allows it to exchange data with a compatible PLC or automation controller.
Q2: Which communication protocol does the OTB1S0DM9LP support?
The module supports Modbus RTU and ASCII over a non-isolated RS485 serial link. Communication speed can be configured within the supported range of 1.2–38.4 kbit/s. The controller and module must use compatible baud rates, data formats, parity settings, and addressing.
Q3: What types of sensors can be connected to the digital inputs?
The module provides 12 digital inputs designed for nominal 24 V DC signals, with an input voltage range of 20.4–26.4 V DC. It supports sink or source input logic and compatible NPN or PNP sensors. Check the terminal wiring and sensor output type before connecting field devices.
Q4: What is the difference between the solid-state outputs and relay outputs?
The two PNP solid-state outputs are designed for compatible DC loads and electronic switching. The six relay outputs use mechanical contacts and can switch supported AC or DC loads within their specified ratings. Select the output type according to the load voltage, current, switching frequency, and electrical protection requirements.
Q5: How should the RS485 communication network be wired?
Use suitable shielded twisted-pair cable and follow the manufacturer’s RS485 wiring diagram. Observe signal polarity, grounding and shielding recommendations, and the required bus topology. Set matching communication parameters on the controller and module. The two RJ45 connectors are connected in parallel and are not Ethernet ports.
Q6: Can the OTB1S0DM9LP be expanded with additional I/O modules?
Yes. The Modicon OTB system supports up to seven compatible I/O expansion modules. Before adding modules, check the supported module types, total I/O capacity, power requirements, and configuration limits. Expansion modules must be installed and configured according to the system documentation.
Q7: What should I check if the module does not communicate with the PLC?
Confirm that the module receives the correct 24 V DC supply and that the serial cable is wired correctly. Check the Modbus address, baud rate, parity, data bits, and stop bits at both ends. Inspect the communication status indicators and verify that the RS485 network topology and cable connections comply with the installation requirements.
Q8: Is the OTB1S0DM9LP suitable for a new automation project?
The OTB1S0DM9LP has been discontinued. Schneider Electric identifies the Modicon TM3BCSL serial-line bus coupler as a replacement option. For a new installation, confirm compatibility with the selected controller, expansion modules, communication requirements, and wiring arrangement. For an existing system, check spare-part availability and replacement requirements before planning maintenance.
Schneider OTB1S0DM9LP Distributed I/O Modules is in stock. Please contact us for a quick quote and competitive pricing.
| Company Information | ||||||||
| [email protected] | ||||||||
| Mobile | +8613666084105 | |||||||
| +8613666084105 | ||||||||
| 13666084105 | ||||||||
| Add to | Room 1004, No. 62 Xiangxiu Li, Siming District, Xiamen City, Fujian Province, China | |||||||
Company Introduction
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