Configured for discrete relay output switching in Modicon X80 automation platforms, the Schneider Electric BMXDRA0805 (BMXDRA0805 discrete output module) provides direct electrical execution. The module integrates eight relay outputs compliant with EN/IEC 61131-2 and supports both DC and AC load switching through isolated relay contacts with external protection measures defined for inductive and overload conditions.
Suffix Breakdown & Model Matrix
The supplied documentation defines BMXDRA0805 as a single catalog number. No official suffix or option matrix is specified; therefore, no model subdivision is applicable.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | BMXDRA0805 |
| Brand | Schneider Electric |
| Product Series | Modicon X80 |
| Product Type | Discrete Output Module |
| Output Channels | 8 relay outputs |
| Output Standard | EN/IEC 61131-2 |
| Output Voltage | 12…24 V DC (10…34 V DC), 24…240 V AC (10…264 V AC) |
| Output Type | Relay |
| Conventional Thermal Current | 3 A |
| Minimum Switching Current | 1 mA at 5 V DC |
| Response Time | <= 10 ms (ON), <= 8 ms (OFF) |
| Typical Current Consumption | 100 mA at 3.3 V DC |
| Power Consumption | <= 2.7 W |
| Insulation Resistance | > 10 MOhm at 500 V DC |
| Electrical Durability | 1,000,000 cycles (AC-12, DC-12, DC-13); 2,000,000 cycles (AC-15) |
| MTBF | 1,573,341 h |
| Status Indicators | RUN, ERR, I/O, one green LED per output channel |
| Protection | External overload protection, external short-circuit protection, overvoltage protection for inductive AC/DC loads |
| Recommended Output Protection | Fast-blow fuse per channel or group, discharge diode (DC), RC circuit (AC), ZnO surge limiter (AC) |
| Dielectric Strength | 2000 V AC, 50/60 Hz, 1 min |
| IP Rating | IP20 |
| Operating Temp | 0…60 deg C |
| Storage Temp | -40…85 deg C |
| Relative Humidity | 5…95 %, non-condensing at 55 deg C |
| Vibration Resistance | 3 gn |
| Shock Resistance | 30 gn |
| Operating Altitude | 0…2000 m; 2000…5000 m with derating |
| Protective Treatment | TC |
| Environmental Characteristics | Corrosion resistant, dust resistant |
| Weight | 0.145 kg |
| Dimensions | Not specified |
| Certifications | CE, CSA, UL, RCM, Merchant Navy, EAC |
Backplane Bus Communication and I/O Density
The BMXDRA0805 is designed for operation on the Modicon X80 backplane, where process image data is exchanged between the CPU and distributed I/O modules through the rack communication bus. The module contributes eight isolated relay output channels without requiring local firmware configuration. Backplane current consumption is specified as 100 mA at 3.3 V DC and should be included in rack power budget calculations when multiple I/O modules are installed.
Frequently Asked Questions
Q: Does the BMXDRA0805 include integrated short-circuit or overload protection on its relay outputs?
A: No. The documentation specifies external overload and short-circuit protection. Schneider Electric recommends a fast-blow fuse for each channel or channel group.
Q: What protection components should be installed when driving inductive loads?
A: For DC loads, install a discharge diode across the load. For AC loads, use an RC suppression circuit or a ZnO surge limiter to reduce switching transients and protect relay contacts.
Q: Can the module switch both AC and DC loads?
A: Yes. The relay outputs support DC loads from 12…24 V DC (10…34 V DC operating range) and AC loads from 24…240 V AC (10…264 V AC operating range) within the specified electrical ratings.
Field Installation Guidelines
- Verify that rack power capacity includes the module current consumption before installation.
- De-energize the rack before inserting or removing the module unless the system documentation explicitly permits the procedure.
- Install external fast-blow fuses as specified for each output channel or output group.
- Route output wiring separately from low-level analog and communication cables to reduce electromagnetic coupling.
- Install discharge diodes, RC snubbers, or ZnO surge suppressors according to the connected load type to minimize relay contact wear.
- Confirm that field wiring insulation and conductor ratings match the intended AC or DC operating voltage before energizing the circuit.
- Maintain environmental conditions within the specified temperature, humidity, and altitude limits for continuous operation.
Schneider Top Products
| Modicon Quantum | Modicon X80 | Modicon Quantum |
| 140DDI84100 | BMXDDI1602 | TSXAEY800 |
| 140DDO84300 | BMXNOM0200 | TSXDSY32T2K |
| 140DDO35300 | BMXAMO0410 | TSXSCP114 |
| 140CHS11000 | BMXAMI0810 | TSXP571634M |
| 140ACI03000 | BMXDDO3202K | TSXDEY32D2 |
| 140ACI04000 | BMXAMO0802 | TSXDSY32T2 |
| 140ACO13000 | BMXCPS2000 | TSXDET3242 |
| 140CRA93200 | BMXCPS2010 | TSXDST1682 |
| 140CPU65150 | BMXCPS3020 | TSXP47425 |
| 140CPU67160 | BMXCPS3500 | TSXP57303AM |
Reviews
There are no reviews yet.