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22B-E012N104
22B-E012N104按下频率2按钮SB6,梯形图中的I0.5闭合,上升沿触发并输出,内部继电器M0.0,M0.1,M0.2复位一次,各频率输出复位,同时内部继电器M0.1得电,讲频率2赋值给了PLC的模拟量输出,输出2V的电压加在与变频器外接端子的4和5上,变频器按照频率20HZ运行。 3、按下频率3按钮SB7,梯形图中的I0.6闭合,上升沿触发并输出,内部继电器M0.0,M0.1,M0.2复位一次,各频率输出复位,同时内部继电器M0.2得电,讲频率3赋值给了PLC的模拟量输出,输出2V的电压加在与变频器外接端子的4和5上,变频器按照频率40HZ运行。 频率可以随意给定,不需要按顺序,因为不论按那个速度都回吧所有的频率复位。 按下停止输出按钮SB4,梯形图中的I0.3失电,输出继电器Q0.1失电,变频外接端子STF与SD断开,变频器按照Pr.8减速时间1减速到0HZ后电动机停止运转。变频面板运行指示熄灭。显示0.00HZ。回路中所有的Q0.4常开点断开,输出继电器M0.0 M0.1 M0.2停止输出,I0.1解除自锁。4和5端子给定的频率为停止 变频器断电 在变频器运行过程中按下变频器断电按钮SB2是无效的,只有当变频器停止运行后,按下变频断电按钮SB2,梯形图中的I0.1输出继电器Q0.0失电,PLC的输出点Q0.0与1L断开,KM接触器断电释放。变频器控制面板指示灯及信息熄灭。Q0.0常开点断开,解除自锁。 当变频故障时候,A1和C1端子接通,回路中的I0.7得电,输出继电器Q0.0和Q0.4失电,PLC输出点Q0.0,Q0.4失电;接触器断开,变频器停止输出
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