描述
对于两个重要输出量，不仅在PLC内部互锁，建议在PLC外部也进行硬件上的互锁，以加强PLC系统运行的安全性、可靠性。对于常见的AC220V交流开关类负载，例如交流接触器、电磁阀等，应该通过DC24V微小型中间继电器驱动，避免PLC的DO接点直接驱动，尽管PLC手册标称具有AC220V交流开关类负载驱动能力。
NEW Pacific Scientific PC3403Ai-001-RI PC3403Ai001RI
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Pacific Scientific SC720 Servo Drive SC722A001 115/230V
Pacific Scientific SC720 Servo Drive SC722A001
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Pacific Scientific Servo Drive SC722A001
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400 Amp Engine Generator, 28V, Pacific Scientific, Used
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Pacific Scientific 6430 Stepper Motor Drive
Pacific Scientific E41RLHA-LSS-NS-02 Stepper Motor *NEW
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PACIFIC SCIENTIFIC S21GSNA-RNNM-04 USPP S21GSNARNNM04
