1746-RL70
|
3. 系统性能
● 流量脉冲频率:小于50Hz。对应于各种流量计的流量范围如表1所列。
● 精度:主要取决于流量计精度,即SPX系列为±1%满量程;WTX系列为±0.75%满量程,系列流量脉冲频率>50Hz时,会产生附加误差。
● 电源:交流220V。
4. 系统主要功能
本系统可以计算和分路显示瞬时流量和累积流量,其显示范围为:0.0000?2949.0000(l/m)
系统通过显示器将CPU212中的各路瞬时流量和累积流量显示出来,并可清零及设置K系数,其设置方法为:K=3.7854/K′,式中K′为流量计标签上的K系数,按四舍五入法则取K的小数点后4位数。
5. 结束语
本系统在工业生产中有广泛的应用前景。可以计算和显示多路瞬时流量和累积流量,精确度高;使用可编程程序控制器使系统的性能价格比较高,同时由于使用了显示器,系统用户界面非常友好。分析了水电站PLC系统的工作环境及对系统运行的影响并提出了相应的措施。
关键词: 水电站;PLC;可靠性
◆ 企业名称:厦门泰尼电气有限公司
◆ 企业性质: 有限责任公司
◆ 主营业务:DCS,PLC
◆ 经营模式: 贸易
◆ 贸易地区: 全国
◆ : 小廖女士)
◆ :
◆
◆ :
◆ (备注“01008”收)
◆ :
◆ 邮政编码: 361026
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