HEIDENHAIN ROD700-18000 plc模块
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电池使用外部电池单元(SB822)备份存储器内容。备份时间见表65。电磁兼容性和电气安全PM891符合EMC指令2004/108/EEC中规定的要求。有关电气安全的更多信息,请参阅附录D,指令注意事项。LED指示灯参见第179页表20。性能数据PM891处理器单元的性能大约是PM864性能的三倍。在冗余配置中,执行性能大约是PM864性能的三倍。如果在CPU正常通电后安装了电池,允许激活内存备份功能,则表65中的数字有效。表65。PM891电源的备份时间PM891外部电池的备份时间SB822注意:空电池的充电时间约为7小时。充满电时至少33小时关键功能•支持冗余通信接口单元。•支持CPU的在线更换。•外部电源。•支持热插拔。说明BC810单元由两个基本部分组成:基板(TP857)和电源/逻辑板。
Battery The memory content is backed up with an external battery unit (SB822). For backup time, see Table 65. Electro-magnetic Compatibility and Electrical Safety PM891 meets the requirements specified in EMC Directive 2004/108/EEC. For more information regarding electrical safety, see Appendix D, Directive Considerations. LED Indicators See Table 20 on page 179. Performance Data The PM891 processor unit’s performance is approximately three times the performance of PM864. In redundant configuration too, the execution performance is approximately three times the performance of PM864. The figures in Table 65 are valid if the batteries have been installed after a normal CPU power-up, allowing for the memory backup function to be activated. Table 65. Backup time for PM891 Source Back-up time for PM891 External battery SB822 Note: Recharge time for an empty battery is approximately 7 hours. Minimum 33 hours when fully charged Key Features • Supports redundant communication interface units. • Supports on-line replacement of the CPU. • External power supply. • Supports hot swap. Description The BC810 unit consists of two basic parts: baseplate (TP857) and power supply/logic board.
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