ABB SD834 电源供应器单元旨在满足 EN 50178 统一标准出版物中规定的所有适用电气安全数据以及 EN 61131-2 和 UL 508 要求的其他安全和功能数据。次级输出电路适用于 SELV 或 PELV 应用。它们是开关模式电源单元，可将电源电压转换为 24 伏直流电。这些电源可用于非冗余和冗余应用。冗余应用需要二极管投票单元SS823或SS832。 第二输出电路可用于SEIV或PELV应用。
SD834
这些电源供应器是转换手动电压为24伏特的开关模式电源装置。这些电源供应器可用于非备援及备援应用程式。使用SD83x系列电源装置时，无需安装手部滤波器。它们提供了软启动功能;S7-1200可编程控制器。使用SD83x系列电源单元，无需安装电源滤波器。ABB SD834 电源供应器它们提供软启动功能;SD83x 的上电不会触发保险丝或接地故障断路器。
SD834
The ABB SD834 power supply unit is designed to meet all applicable electrical safety data specified in the unified standard publication EN 50178, as well as other safety and functional data required by EN 61131-2 and UL 508. The secondary output circuit is suitable for SELV or PELV applications. They are switch mode power supply units that can convert the power supply voltage to 24V DC. These power supplies can be used for both non redundant and redundant applications. Redundant applications require diode voting units SS823 or SS832. The second output circuit can be used for SEIV or PELV applications.
SD834
These power supplies are switch mode power devices that convert manual voltage to 24 volts. These power supplies can be used for non backup and backup applications. When using the SD83x series power supply unit, there is no need to install a hand filter. They provide a soft start function; S7-1200 programmable controller. Using the SD83x series power unit, there is no need to install a power filter. ABB SD834 power supply units provide soft start function; Powering on SD83x will not trigger fuses or ground fault circuit breakers.
SD834
PLC控制器本身的硬件采用积木式结构，各厂家产品结构大同小异。以日本欧姆龙C200HE为例，为总线模板框式结构，基本框架(CPU母板)上装有CPU模板，其它槽位装有I/O模板;如果I/O模板多时，可由CPU母板经I/O扩展电缆连接I/O扩展母板，在其上装I/O模板;另一种方法是配备远程I/O从站等。这些都说明了PLC厂家将硬件各部件均向用户开发，便于用户选用，配置成规模不等的PLC，而且这种硬件配置的开放性，为制造商、分销商(代理商)、系统集成商、最终用户带来很多方便，为营销供应链带来很大便利，这是一大成功经验。
SD834
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