Product Overview
Part of the Modicon X80 family, the Schneider BMXDRA1605 discrete output module delivers 16 normally open relay outputs designed for switching AC and DC loads. This module addresses common failure modes in industrial automation, such as relay coil burnout and contact welding, through robust protection features including overload, overvoltage, and short-circuit safeguards. With a high MTBF of 2,100,000 hours, the BMXDRA1605 ensures extended service life and reduced downtime.
Technical Specifications
| Parameter |
Value |
| Output Type |
Relay, 16 NO |
| Output Voltage (AC) |
24…240 V AC (19…264 V) |
| Output Voltage (DC) |
24…48 V DC (19…60 V) |
| Conventional Free Air Thermal Current (Ith) |
2 A |
| Insulation Resistance |
>10 MOhm at 500 V DC |
| Power Dissipation |
3 W |
| Response Time (Activation) |
<8 ms |
| Response Time (Deactivation) |
<10 ms |
| Typical Current Consumption (3.3 V DC) |
100 mA |
| Typical Current Consumption (24 V DC) |
95 mA |
| MTBF Reliability |
2,100,000 hours |
| Minimum Switching Current |
1 mA at 5 V DC |
| Electrical Durability (AC-15, 240 VA) |
100,000 cycles |
| Electrical Durability (DC-13, 24 W) |
100,000 cycles |
| Weight |
0.15 kg |
Real-World Applications
The Schneider BMXDRA1605 excels in applications requiring reliable switching of inductive loads, such as conveyor systems, valve actuators, and motor starters. Its built-in overvoltage protection (discharge diodes for DC, RC circuits for AC) prevents relay damage from back EMF, a common failure cause in industrial environments. In material handling, the module’s fast response time (<8 ms activation) ensures precise sequence control, reducing machine cycle times.
Installation and Setup Guidance
To maximize reliability, mount the BMXDRA1605 in a clean, dry cabinet within its operating temperature range (0…60°C). Use one fast-blow fuse per channel or group of channels for overload and short-circuit protection. For AC outputs, connect a RC snubber circuit across the load to suppress voltage spikes. For DC outputs, install a freewheeling diode. Ensure wiring follows the 500 V DC insulation resistance requirement. The module is IP20 rated, so avoid direct exposure to dust and moisture.
Maintenance and Reliability
Regular inspection of fuses and relay contacts is recommended every 6 months, especially in high-cycle applications. The BMXDRA1605’s MTBF of 2,100,000 hours indicates exceptional long-term reliability. Monitor ambient temperature; operation above 60°C may require derating above 2000 m altitude. The module’s green LED indicates RUN status, while red LEDs flag ERR or I/O faults, simplifying diagnostics.
Compatibility and Integration
Designed for the Schneider Modicon X80 automation platform, the BMXDRA1605 integrates seamlessly with compatible backplanes and controllers within the same range. No additional communication modules are required for basic operation; the module interfaces directly via the X80 bus.
Selection Guide and Purchasing Advice
Before purchasing, verify your system’s compatibility with the Modicon X80 range. The BMXDRA1605 is a direct replacement for earlier relay output modules in the same family. For orders and technical support, contact UBEST Automation at ubest101.myshopify.com. We stock genuine Schneider parts with fast shipping.