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Schneider Electric BMXDRA0805 Modicon X80 Discrete Output Module

The Schneider Electric BMXDRA0805, also cataloged as the BMXDRA0805 Discrete Output Module, operates as a dedicated hardware component for relay-based discrete output switching within the Modicon X80 automation platform. The module provides eight relay outputs supporting both AC and DC loads with electrical isolation through mechanical relay contacts.

Suffix Breakdown & Model Matrix

The supplied documentation identifies BMXDRA0805 as a fixed catalog number. No official suffix breakdown or ordering matrix is specified.

Hardware Specifications

Parameter	Specification
Model	BMXDRA0805
Brand	Schneider Electric
Series	Modicon X80
Product Type	Discrete Output Module
Output Channels	8 relay outputs
Output Standard	EN/IEC 61131-2
Output Voltage	12 to 24 VDC (10 to 34 VDC), 24 to 240 VAC (10 to 264 VAC)
Output Type	Relay
Conventional Thermal Current	3 A
Minimum Switching Current	1 mA at 5 VDC
Response Time	<= 10 ms ON, <= 8 ms OFF
Typical Current Consumption	100 mA at 3.3 VDC
Power Consumption	Power dissipation <= 2.7 W
Insulation Resistance	> 10 MOhm at 500 VDC
MTBF	1,573,341 h
Electrical Durability	1,000,000 cycles (AC-12, DC-12, DC-13), 2,000,000 cycles (AC-15) under specified loads
Protection	External overload protection, external short-circuit protection, inductive AC/DC overvoltage protection
Recommended Output Protection	Fast-blow fuse per channel or channel group; discharge diode for DC loads; RC circuit or ZnO surge limiter for AC loads
Dielectric Strength	2000 VAC, 50/60 Hz, 1 min
IP Rating	IP20
Operating Temp	0 to 60 degC
Storage Temp	-40 to 85 degC
Relative Humidity	5 % to 95 % non-condensing at 55 degC
Operating Altitude	0 to 2000 m, derating required up to 5000 m
Vibration Resistance	3 gn
Shock Resistance	30 gn
Dimensions	Not specified in the supplied documentation
Weight	Not specified in the supplied documentation
Certifications	CE, CSA, UL, RCM, Merchant Navy, EAC

Backplane Communication Integration

The BMXDRA0805 interfaces with the Modicon X80 backplane through the platform bus, where output command data and module diagnostics are exchanged between the controller and the I/O module. Relay switching is executed locally by the module while logic execution remains in the PLC CPU. Firmware compatibility should be verified against the controller and rack configuration before system commissioning.

Frequently Asked Questions

Q: Does the module include internal short-circuit protection?

A: No. The documentation specifies external short-circuit protection using one fast-blow fuse per channel or per channel group.

Q: What suppression devices should be installed for inductive loads?

A: Schneider Electric specifies a discharge diode for DC loads and either an RC suppression circuit or a ZnO surge limiter for AC loads to reduce switching transients.

Q: Can the module switch both AC and DC loads?

A: Yes. The relay outputs support DC loads from 12 to 24 VDC (10 to 34 VDC allowable) and AC loads from 24 to 240 VAC (10 to 264 VAC allowable).

Field Installation Guidelines

• Verify rack compatibility with the Modicon X80 platform before module installation.
• Isolate all field wiring before connecting output circuits.
• Install the specified external fast-blow fuse for each protected output channel or channel group.
• Route output wiring separately from low-level signal cables to reduce electrical interference.
• Apply the recommended suppression device directly across inductive field loads.
• Maintain protective earth continuity for the control cabinet and follow applicable local electrical installation standards.

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