《Reliance 0-56963-A》
Reliance 0-56963-A
Reliance 0-56963-A 性能测试：
【厦门光沃自动化设备有限公司】
【联 系 人：陈小姐】
【免费热线：0592-5709825】
【24小时开机：18030229053 】
【工作QQ: 2479261344】
该系统有手动和自动两种运行方式。手动方式时，通过触摸屏或控制柜上的启动和停止按钮控制水泵运行，可根据需要分别控制1#～3#泵的启停，该方式主要供设备调试、自动有故障和检修时使用。自动运行时，首先由1#水泵变频运行，变频器输出频率从0HZ上升，同时PID调节器把接收的信号与给定压力比较运算后送给变频器控制。如压力不够，则频率上升到50HZ，由PLC设定的程序驱动I/O端口开关量的输出来实现切换交流接触器组，使得1#泵变频迅速切换为工频，2#泵变频启动，若压力仍达不到设定压力，则2#泵由变频切换成工频，3#泵变频启动;如用水量减少，PLC控制从先起的泵开始切除，同时根据PID调节参数使系统平稳运行，始终保持管网压力。
若有电源瞬时停电的情况，则系统停机，待电源恢复正常后，人工启动，系统自动恢复到初始状态开始运行。变频自动功能是该系统最基本的功能，系统自动完成对多台泵的启动、停止、循环变频的全部操作过程。
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