厂商 ：厦门泰尼电气科技有限公司
福建 厦门- 主营产品：
- 西门子
- 西屋
- 福克斯波罗
1794-ACNR15
1794-ACNR15
1794-ACNR15
急停电路。对于能使用户造成伤害的危险负载，除了在控制程序中加以考虑之外，还应设计外部紧急停车电路，使得PLC发生故障时，能将引起伤害的负载电源可靠切断。
保护电路。正反向运转等可逆操作的控制系统，要设置外部电器互锁保护；往复运行及升降移动的控制系统，要设置外部限位保护电路。
可编程控制器有监视定时器等自检功能，检查出异常时，输出全部关闭。但当可编程控制器CPU故障时就不能控制输出，因此，对于能使用户造成伤害的危险负载，为确保设备在安全状态下运行，需设计外电路加以防护。
电源过负荷的防护。如果PLC电源发生故障，中断时间少于10秒，PLC工作不受影响，若电源中断超过10秒或电源下降超过允许值，则PLC停止工作，所有的输出点均同时断开；当电源恢复时，若RUN输入接通，则操作自动进行。因此，对一些易过负载的输入设备应设置必要的限流保护电路。
重大故障的报警及防护。对于易发生重大事故的场所，为了确保控制系统在重大事故发生时仍可靠的报警及防护，应将与重大故障有联系的信号通过外电路输出，以使控制系统在安全状况下运行。
★厦门泰尼电气有限公司 ★★联系人：小黄 ★
★Q Q ：2917675397★
★电话：0592-6809319 ★
★手机：18950191386 ★
★传真：0592-6890859 （注小黄收）★
★邮箱：2917675397@qq.com★
★地址：厦门市海沧区海沧街道滨湖一里7号2008室★
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