RELIANCE UVZC3007数字交流伺服板
1.产 品 介 绍
品牌：RELIANCE
型号说明：RELIANCE UVZC3007数字交流伺服板
优势：供应进口原装正品，专业停产配件。
公司主营特点：主营产品各种模块/卡件，控制器，触摸屏，伺服驱动器。
2.产 品 详 情 资 料：
RELIANCE UVZC3007当主电源断开时，电池向SRAM提供VCC。电池保护的最坏情况是200天。SRAM阵列没有奇偶校验保护。控制器的SRAM电池备份功能由Dallas DS1210S提供。DS1210S支持主电源和辅助电源。RELIANCE UVZC3007当主板电源故障时，DS1210S选择具有最高电压的电源。如果一个源发生故障，DS1210S将切换到冗余源。每次板通电时，DS1210S都会检查电源，如果备用电源的电压低于2伏，则会阻止第二个存储周期。这允许软件提供预警以避免数据丢失。因为DS1210S可以阻止第二次访问，所以软件在依赖数据之前应该至少进行两次访问。控制器提供跳线（J20上），允许DS1210S的电源连接到VMEbus+5V STDBY引脚或板载电池的一个单元。例如，主要系统备用电源可以是连接到VMEbus+5V STDBY引脚的电池，次要电源可以是板载电池。如果系统电源出现故障或板从机箱中卸下，则板载电池将接管。有关跳线配置，请参阅第2章。RELIANCE UVZC3007
A battery supplies VCC to the SRAMs when main power is removed. The worst case elapsed time for battery protection is 200 days. The SRAM arrays are not parity protected. The controller’s SRAM battery backup function is provided by a Dallas DS1210S. The DS1210S supports primary and secondary power sources. When the main board power fails, RELIANCE UVZC3007the DS1210S selects the source with the highest voltage. If one source should fail, the DS1210S switches to the redundant source. Each time the board is powered, the DS1210S checks power sources and if the voltage of the backup sources is less than two volts, the second memory cycle is blocked. This allows software to provide an early warning to avoid data loss. Because the DS1210S may block the second access, the software should do at least two accesses before relying on the data. The controller provides jumpers (on J20) that allow either power source of the DS1210S to be connected to the VMEbus +5V STDBY pin or to one cell of the onboard battery. For example, the primary system backup source may be a battery connected to the VMEbus +5V STDBY pin and the secondary source may be the onboard battery. If the system source should fail or the board is removed from the chassis, the onboard battery takes over. Refer to Chapter 2 for the jumper configurations.RELIANCE UVZC3007
3.产 品 展 示
4.公 司 优 势 主 营 产 品
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