BMXDRA0804T - 8 Relay Output Module 100-150V DC | Schneider
料号： BMXDRA0804T ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $385 | $385.00 |
| 10 | $366 | $3,660.00 |
| 100 | $342 | $34,200.00 |
| 500 | $325 | $162,500.00 |
| 1,000 | $308 | $308,000.00 |
BMXDRA0804T 概述
A discrete output module is a key element of a programmable automation controller (PAC) I/O system: it converts low-voltage logic commands from the controller into isolated contact closures capable of driving industrial field devices. Within the automation hierarchy - PAC backplane, I/O module, field device - the relay output module occupies the final stage, providing galvanic separation between the electronic controller and the switched load. The Modicon X80 range is a common platform of modules shared by the Modicon M580 and Modicon M340 PACs, letting one spare-parts inventory serve both platforms.
Key features of the BMXDRA0804T include 8 form-A NO relay contacts, a 100 to 150 V DC output voltage range, a 10 ms output conversion rate, and the extended -25 to +70 degrees C operating envelope that distinguishes the T-suffix version from the standard-temperature BMXDRA0804. The module draws 117 mA of internal current at 125 V DC nominal and dissipates approximately 3.17 W.
The relay-output architecture suits loads that require dry-contact switching - DC contactor coils, interposing relays, indicator circuits and small actuators operating at 100 to 150 V DC, a voltage class common in power-utility and process-industry DC control schemes (125 V DC battery-backed control buses).
Typical applications include water and wastewater treatment, power generation and substation automation, oil and gas process control, and factory automation systems built on Modicon M580 or M340 controllers.
Design consideration: because relay contacts have a finite mechanical life and a 10 ms conversion rate, verify contact ratings and switching frequency against your load duty cycle; for high-cycle-rate switching, a transistor output module may be preferable.
This page adds distributor pricing, drop-in same-family alternatives, practical design notes, and an FAQ not found in the manufacturer datasheet, so engineers can compare and source the BMXDRA0804T in one place.
直接替换替代料： BMXDRA0804T ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
BMXDRA0804
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
BMXDRA0805
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
BMXDRA0804T 最大额定值与电气特性
| Product Type | Discrete output module |
| Range | Modicon X80 |
| 输出数量 | 8 |
| 输出类型 | Relay, normally open (NO) |
| 输出电压范围 | 100 to 150 V DC |
| Output Current per Channel | 0.3 A |
| Conversion Rate | 10 ms |
| Nominal Supply Voltage | 125 V DC |
| Module Current Consumption | 117 mA |
| Power Dissipation | 3.17 W |
| 工作温度 | -25 to 70 C (extended temperature) |
| Mounting | Chassis mount (X80 rack) |
| Field Wiring Connection | Screw terminal |
| Dimensions | 3.93 in H x 6.29 in D |
| Compatible Controllers | Modicon M580, Modicon M340 |
| RoHS 状态 | Compliant |
| Product Availability | Stock - normally stocked in distribution facility |
BMXDRA0804T standard 引脚配置指南
BMXDRA0804T（standard 封装）的引脚配置。 引脚编号、功能和连接图在制造商数据手册中定义。请参阅该手册以了解确切的封装尺寸和焊接指南。
暂无详细引脚数据： BMXDRA0804T.
请参阅 数据手册 以查看完整引脚配置。
典型应用
BMXDRA0804T 适用于 6 应用s: Power Substation DC Control, Water and Wastewater Treatment Automation, Oil and Gas Process Control, Factory Automation and Machine Control, Power Generation Plant Balance-of-Plant Control, Building Infrastructure and Critical Facility Control.
Power Substation DC Control
Substation automation systems universally use 125 V DC battery-backed control buses because they keep protection and switching circuits alive during AC power loss. The BMXDRA0804T is purpose-built for this voltage class, with a 100 to 150 V DC output range covering nominal 125 V DC schemes including float and equalize charge conditions. Its 0.3 A per-channel NO relay contacts directly drive auxiliary lockout relays, annunciator inputs and breaker trip-coil supervision circuits, while the -25 to +70 degrees C extended rating tolerates unconditioned switchgear cabinets. Mounted in an X80 rack served by a Modicon M580 PAC, the module provides galvanic isolation between the controller electronics and the DC control scheme. In an X80-based RTU or bay controller, 8 points per module keeps panel density practical, and the 10 ms conversion rate comfortably meets typical SCADA point-update requirements.
推荐
Water and Wastewater Treatment Automation
Water and wastewater plants distribute I/O across pump stations, filter buildings and chemical dosing areas, often with long cable runs and mixed load types. The BMXDRA0804T fits applications where the plant DC control scheme operates at 100 to 150 V DC, using its relay outputs to command pump contactor coils, motorized valve actuators and chemical metering pump enable circuits through dry, isolated contacts. Relay isolation eliminates ground-loop concerns between the Modicon M580 PAC in the control room and field equipment, and the extended -25 to +70 degrees C rating suits outdoor motor-control-center and wet-well environments without supplemental cabinet conditioning. The 10 ms output update is far faster than the seconds-scale process dynamics of filtration and dosing loops. With 8 points per module, engineers can mix relay modules for DC actuation with transistor modules for high-cycle solenoid duties in the same X80 rack.
推荐
Oil and Gas Process Control
Upstream and midstream facilities frequently retain legacy 125 V DC control distribution for shutdown valves, panel annunciators and wellhead interlock circuits. The BMXDRA0804T interfaces a Modicon M580 or M340 PAC to these loads with its 8 NO relay contacts rated 0.3 A at 100 to 150 V DC, driving pilot relays that in turn switch larger solenoid or motor loads. The extended -25 to +70 degrees C operating range is important for skid-mounted control panels in desert and arctic deployments where HVAC capacity is limited. Relay outputs also simplify hazardous-area interface design: the isolated dry contact can feed an intrinsically safe isolator without polarity concerns. The module's 117 mA backplane consumption and 3.17 W dissipation are low enough that a standard X80 power supply sizing calculation is unaffected when populating mixed I/O racks in process-control cabinets.
推荐
Factory Automation and Machine Control
In factory automation cells built on the Modicon M340 or M580 platform, the BMXDRA0804T handles DC control circuits at the 100-150 V DC level found in heavy-industry plants that standardize on DC control power for ride-through during mains dips. Typical switched loads include relay logic panels, stack-light circuits, guard-locking safety-relay enable circuits and small DC actuators, all within the 0.3 A contact rating. The relay architecture gives designers dry contacts that work regardless of load polarity, simplifying wiring documentation across mixed equipment from different suppliers. The 10 ms conversion rate meets machine-sequence timing needs, while screw-terminal field wiring supports straightforward panel assembly and maintenance. Because the X80 range is shared across both PAC platforms, machine builders can standardize one I/O library and one spare-parts kit for all their M580- and M340-based installations.
推荐
Power Generation Plant Balance-of-Plant Control
Thermal power plants commonly run 125 V DC control schemes for balance-of-plant equipment - lube-oil pumps, damper drives, burner management permissives - because DC distribution survives unit trips. The BMXDRA0804T's 100 to 150 V DC output window directly matches this bus, including equalize-charge excursions to roughly 140 V DC, and its extended -25 to +70 degrees C rating accommodates turbine-hall and outdoor rack ambient conditions. Eight isolated NO contacts per module drive interposing relays, breaker auxiliary circuits and alarm annunciation from a Modicon M580 PAC. The galvanic isolation of relay outputs is valuable in plants with extensive grounding networks, preventing circulating currents between control zones. At 10 ms conversion rate and 3.17 W dissipation, the module supports responsive sequencing without thermal burden on the cabinet. Standardized X80 mounting in multi-rack cabinets simplifies M580-based DCS retrofits of legacy relay panels.
推荐
Building Infrastructure and Critical Facility Control
Data centers, hospitals and transit facilities often specify DC control power for fire, elevator and life-safety interlock circuits to guarantee operation during outages. The BMXDRA0804T lets a Modicon M340/M580 supervisory controller switch these 100-150 V DC circuits through its 8 relay outputs, each rated 0.3 A - sufficient for pilot relays, damper actuator enable circuits and status annunciation. The extended temperature rating of -25 to +70 degrees C suits rooftop and basement equipment rooms that lack tight climate control, and the chassis-mount X80 format integrates with the same rack holding analog input modules monitoring the facility. Screw terminals and clear per-channel labeling keep maintenance straightforward for facility technicians rather than specialist integrators. Dry relay contacts also provide the isolation required when interfacing life-safety circuits, keeping the PAC electronics fully separated from code-governed fire and alarm wiring.
推荐
推荐产品汇总
工程参考数据： BMXDRA0804T ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | BMXDRA0804 | BMXDRA0805 |
|---|---|---|---|
| Package | X80 rack chassis module (screw terminal) | X80 rack chassis module - same | X80 rack chassis module - same |
| Brand | Schneider Electric | Schneider Electric | Schneider Electric |
| Number of Outputs | 8 NO relay | 8 NO relay | 8 NO relay |
| Output Current per Channel | 0.3 A | 0.3 A | 0.3 A class |
| Operating Temperature | -25 to 70 C (extended) | standard commercial range (narrower) | standard commercial range |
| Conversion Rate | 10 ms | 10 ms | 10 ms |
| Compatible Controllers | Modicon M580, M340 | Modicon M580, M340 | Modicon M580, M340 |
关键差异点
- Extended temperature operation （对比 BMXDRA0804)
- 100-150 V DC relay output class （对比 BMXDRA0805)
- Trade-off: relay versus transistor outputs （对比 BMXDDO1602)
设计说明
Verify per-channel load current against the 0.3 A contact rating. For loads above 0.3 A at 100-150 V DC - larger contactor coils or solenoid valves - insert an interposing relay or contactor rather than driving the load directly. The module's own consumption of 117 mA at 125 V DC nominal and 3.17 W dissipation must be included in X80 power supply sizing when populating a multi-module rack; standard X80 CPS power supplies provide ample margin but the calculation is mandatory on heavily loaded racks.
The T-suffix extended rating of -25 to +70 degrees C applies to the ambient temperature inside the cabinet, not just outdoors. Estimate cabinet interior temperature from external ambient plus total heat dissipation of all rack modules (3.17 W each for this module) and power supply losses. Estimated: a rack with 10 such modules adds roughly 32 W, which in a small sealed cabinet can raise interior temperature 10-20 C above ambient depending on enclosure size - confirm against your enclosure's thermal data before relying on the extended range.
Do not use the BMXDRA0804T where the standard (non-T) BMXDRA0804 would suffice unless temperature genuinely demands it - the extended-temperature version carries a price premium. Conversely, never substitute the standard version into a cabinet exceeding its rating, as relay life degrades sharply with heat. Also note the 10 ms conversion rate: this relay module is unsuitable for fast pulse or high-cycle switching applications; select an X80 transistor output module for those duties. Confirm relay contact protection (flywheel/TVS diode) on inductive DC loads to extend contact life.
合规信息
RoHS compliance stated by MRO Electric product listing and Schneider Electric product documentation. Other environmental declarations not enumerated in the provided product data sheet summary - request from Schneider Electric compliance documentation.
