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手机:+86 15270269218

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Q Q:3136378118

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MVME147S范围区域
MVME147S范围区域
MVME147S范围区域
MVME147S范围区域
MVME147S范围区域
MVME147S范围区域

型号:MVME147S

类别:REXRTOH

联系人:麦女士

手机:+86 15270269218

电话:+86 15270269218

Q Q:3136378118

邮箱:stodcdcs@gmail.com

地址:江西省九江市瑞昌市东益路23号赛湖农商城401号


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MVME147S
2嵌入式控制器经指定、设计和测试,可在0°至55°C(32°至131°F)的进气温度范围内可靠运行,并以100 CFM轴流风机通常可达到的速度进行强制空气冷却。温度鉴定在标准摩托罗拉VMEsystem 3000机箱中执行。25瓦负载板插入两个卡槽中,每侧一个,与测试板相邻,以模拟高功率密度系统配置。一个由三个轴流风机组成的组件,每个风机的额定值为100 CFM,直接放置在VME卡固定框架下方。在风扇组件和卡盒之间测量进气温度,其中进气首先遇到被测控制器。当控制器受到环境温度变化的影响时,执行测试软件。对关键的高功率密度集成电路的外壳温度进行监控,以确保不超过组件供应商的规格。虽然冷却所需的确切气流量取决于环境空气温度以及电路板和其他热源的类型、数量和位置,但通常可以通过控制器上的10 CFM和490 LFM流量实现充分冷却。在大环境温度较低的环境中,需要较少的气流来冷却控制器。在更有利的热条件下,可以在高于55°C且气流增加的情况下可靠地操作控制器。需要注意的是,除了空气移动器的额定CFM外,还有几个因素决定了流经控制器的空气的实际体积和速度。
MVME147S范围区域 MVME147S范围区域 MVME147S范围区域
2 Embedded Controller is specified, designed, and tested to operate reliably with an incoming air temperature range from 0° to 55° C (32° to 131° F) with forced air cooling at a velocity typically achievable by using a 100 CFM axial fan. Temperature qualification is performed in a standard Motorola VMEsystem 3000 chassis. Twenty-five watt load boards are inserted in two card slots, one on each side, adjacent to the board under test, to simulate a high power density system configuration. An assembly of three axial fans, rated at 100 CFM per fan, is placed directly under the VME card cage. The incoming air temperature is measured between the fan assembly and the card cage, where the incoming airstream first encounters the controller under test. Test software is executed as the controller is subjected to ambient temperature variations. Case temperatures of critical, high power density integrated circuits are monitored to ensure component vendors specifications are not exceeded. While the exact amount of airflow required for cooling depends on the ambient air temperature and the type, number, and location of boards and other heat sources, adequate cooling can usually be achieved with 10 CFM and 490 LFM flowing over the controller. Less airflow is required to cool the controller in environments having lower maximum ambients. Under more favorable thermal conditions, it may be possible to operate the controller reliably at higher than 55° C with increased airflow. It is important to note that there are several factors, in addition to the rated CFM of the air mover, which determine the actual volume and speed of air flowing over the controller.
 



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