A16B-1212-0250

A16B-1212-0250

A16B-1212-0250

1、 PID向导生成的程序为何不执行？

确保用SM0.0无条件调用PID0_CTRL库

在程序的其它部分不要再使用SMB34定时中断，也不要对SMB34赋值

确认当前工作状态：手动还是自动

2、如何实现PID反作用调节？

在有些控制中需要PID反作用调节。例如：在夏天控制空调制冷时，若反馈温度（过程值）低于设定温度，需要关阀，减小输出控制（减少冷水流量等）这就是PID反作用调节（在PID正作用中若过程值小于设定值，则需要增大输出控制）

若想实现PID反作用调节，需要把PID回路的增益设为负数。对于增益为0的积分或微分控制来说，如果指定积分时间、微分时间为负值，则是反作用回路。

A16B-1212-0250

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ABB DSQC-249B SERVO AMPLIFIER, tested, warranty

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ABB YB 560 103 BD/3 I/O BOARD DSQC 223 YB560103BD3

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