Configured for discrete output switching in the Modicon X80 automation platform, the Schneider Electric BMXDRA1605 (BMXDRA1605 discrete output module) provides direct electrical execution through 16 relay output channels supporting both DC and AC load control.
Suffix Breakdown & Model Matrix
The supplied documentation identifies BMXDRA1605 as a fixed catalog number. No official suffix variants or ordering matrix are specified in the provided technical data.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | BMXDRA1605 |
| Brand | Schneider Electric |
| Product Series | Modicon X80 |
| Product Type | Discrete Output Module |
| Output Channels | 16 relay outputs |
| Output Standard | EN/IEC 61131-2 |
| Output Voltage | 24 VDC (19…30 VDC), 24…240 VAC (19…264 VAC) |
| Output Type | Relay |
| Conventional Thermal Current | 2 A |
| Minimum Switching Current | 1 mA at 5 VDC |
| Output Response Time | <= 8 ms ON, <= 10 ms OFF |
| Current Consumption | 79 mA at 3.3 VDC |
| Maximum Power Consumption | 3 W |
| Insulation Resistance | > 10 MOhm at 500 VDC |
| Dielectric Strength | 2000 VAC, 50/60 Hz, 1 minute |
| MTBF | 1,357,810 h |
| Protection | IP20 |
| Protective Treatment | TC |
| Operating Temperature | 0…60 deg C |
| Storage Temperature | -40…85 deg C |
| Relative Humidity | 5…95 % non-condensing at 55 deg C |
| Operating Altitude | 0…2000 m, derating required to 5000 m |
| Shock Resistance | 30 gn |
| Vibration Resistance | 3 gn |
| Certifications | CE, UL, CSA, EAC, RCM, Merchant Navy |
| Standards | EN/IEC 61131-2, EN/IEC 61010-2-201, UL 61010-2-201, CSA C22.2 No. 61010-2-201 |
| Dimensions | 3.2 x 9.8 x 9.7 cm |
| Weight | 0.14 kg |
I/O Density Scaling within the Modicon X80 Platform
The BMXDRA1605 expands the Modicon X80 remote or local I/O architecture by providing 16 relay output channels within a single module footprint. Relay outputs allow switching of both DC and AC loads without requiring separate output module types for different voltage classes. Communication with the controller is performed through the Modicon X80 backplane, while output execution is handled independently by the relay contacts.
The module requires external protection for field wiring. Schneider Electric specifies fast-blow fuses for channel or group protection against overload and short circuit conditions. For inductive loads, discharge diodes are recommended on DC circuits, while RC snubber circuits or metal oxide varistors (MOV/ZNO) should be installed on AC loads to reduce switching transients and extend relay contact life.
Frequently Asked Questions
Q: Does the BMXDRA1605 support both AC and DC field loads?
A: Yes. Each relay output is specified for 24 VDC (19…30 VDC) and 24…240 VAC (19…264 VAC) switching within the published electrical ratings.
Q: Is electronic short-circuit protection integrated into the output channels?
A: No. The documentation specifies the use of external fast-blow fuses for each channel or channel group to provide overload and short-circuit protection.
Q: What suppression devices should be installed when switching inductive loads?
A: Schneider Electric recommends flyback diodes for DC loads and RC suppression circuits or MOV surge limiters for AC loads to reduce contact arcing and switching transients.
Field Installation Guidelines
- Verify that the module is fully seated in the Modicon X80 backplane before applying field power.
- Isolate field wiring from communication and low-level signal cables to reduce electrical interference.
- Install the recommended fast-blow fuse for each protected output channel or channel group.
- Apply flyback diodes across DC inductive loads and RC snubbers or MOV suppressors across AC inductive loads.
- Confirm that the connected load voltage and current remain within the relay contact ratings before commissioning.
- Maintain ambient operating conditions within the specified temperature, humidity, and altitude limits.
- Ensure protective earth connections and cabinet grounding comply with applicable installation standards.
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