OTB1C0DM9LP Overview
When you need reliable distributed I/O for a CANopen network, the Schneider OTB1C0DM9LP delivers. This Modicon OTB I/O distributed module combines discrete inputs and outputs in one compact unit. It supports CANopen S20 with DS 401 V2.1 profile and uses CSMA/MA multimaster with priority access. The integrated SUB-D 9 connection handles transmission speeds from 10 kbit/s to 1 Mbit/s over two twisted shielded pairs. This makes it a flexible building block for machine builders and system integrators.
Key Technical Specifications
| Parameter | Value |
|————|——-|
| Discrete inputs | 12 (EN/IEC 61131 type 1) |
| Input logic | Sink or source (NPN/PNP) |
| Input voltage | 24 VDC (20.4…26.4 V) |
| Discrete outputs | 2 solid-state PNP (source), 6 relay |
| Output voltage | 24 VDC solid-state; 30 VDC / 240 VAC relay |
| Output current | 300 mA solid-state; 2000 mA relay |
| Bus length | 0…1000 m at 50 kbit/s (tap-off 0…120 m) |
| Supply voltage | 24 VDC (20.4…26.2 V) |
| Power consumption | 19 W |
| Product weight | 0.195 kg |
| Protection | IP20 |
Industry Applications
The OTB1C0DM9LP fits perfectly into material handling, packaging, and process control systems. Its 12 discrete inputs accept both sink and source signals, so you can connect a variety of sensors and switches. The two solid-state PNP outputs switch fast (5 µs response) for high-speed actuation, while the six relay outputs handle higher currents (up to 2 A) for contactors or small motors. Because it supports up to 63 slaves on the bus, you can expand your network without adding extra controllers.
Installation & Setup
Mount the module on a 35 mm symmetrical DIN rail using the integrated clips, or panel-mount with an optional fixing kit. The removable screw terminal block simplifies wiring. Connect the CANopen bus via the SUB-D 9 connector, ensuring proper termination and shielding. For bus lengths up to 1000 m at 50 kbit/s, keep tap-off lengths under 120 m. Always verify the supply voltage stays within 20.4…26.2 VDC to avoid operational issues.
Maintenance & Reliability
The OTB1C0DM9LP is built for long service life. Relay outputs are rated for 500,000 cycles under various loads (AC-1, AC-14, AC-15, DC-1, DC-13). Solid-state outputs have no moving parts, reducing wear. The module withstands vibration up to 1 gn (57…150 Hz) and shock up to 15 gn for 11 ms. Operate within 0…55 °C ambient temperature and 30…95 % humidity (non-condensing) for best reliability. Periodically check connections and bus cabling to prevent communication errors.
Compatibility & Integration
The OTB1C0DM9LP is designed for CANopen networks. It supports up to 63 slaves and can be daisy-chained or connected via tap junctions. You can add up to 7 I/O expansion modules, increasing your I/O count up to 244 points with HE10 connector modules. This makes it easy to scale your system as needs grow. The module is CSA and UL 508 certified, and carries CE marking.
Selection Guide & Purchasing Advice
Before ordering, verify your bus speed and cable length requirements. The OTB1C0DM9LP supports speeds from 10 kbit/s to 1 Mbit/s, with corresponding bus length limits (e.g., 1000 m at 50 kbit/s). Check your output needs: solid-state for fast switching or relay for higher current. SpareTechPLC offers genuine Schneider modules with fast shipping and expert support. Contact us to confirm availability and lifecycle status.
Troubleshooting & Common Issues
If the module does not communicate, check the CANopen bus termination and cable shielding. Ensure the supply voltage is within 20.4…26.2 VDC. If outputs fail, verify the load current does not exceed 2 A for relays or 300 mA for solid-state outputs. For input issues, confirm the input voltage is 24 VDC and within 20.4…26.4 V. Use the status LEDs (PWR, RUN, ERR) to diagnose faults. The green PWR LED indicates power; the red ERR LED signals bus errors.
Frequently Asked Questions
Q1: What is the maximum bus length for the OTB1C0DM9LP?
At 50 kbit/s, the bus length can reach 1000 m with tap-off lengths up to 120 m. For higher speeds, the length decreases (e.g., 250 m at 250 kbit/s).
Q2: Can I use both solid-state and relay outputs simultaneously?
Yes. The module has two solid-state PNP outputs (Q0…Q1) and six relay outputs (Q2…Q7). They operate independently, giving you flexibility.
Q3: What is the input current consumption?
Each input draws 5 mA (for I0…I1 and I6…I7) or 7 mA (for I2…I5 and I8…I11). This is within typical sensor capabilities.
Q4: Does the module support both NPN and PNP sensors?
Yes. The discrete inputs accept both sink (NPN) and source (PNP) logic, making it compatible with most sensors.
Q5: What is the response time for solid-state outputs?
Solid-state outputs switch in 5 µs (both state 0 and state 1), ideal for high-speed applications. Relay outputs have a 300 µs response time.
