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产品展示 》 ABB 》 OKYM175W22模块备件使用授权

OKYM175W22模块备件使用授权

型号:OKYM175W22

联系人:肖经理
公司名称:瑞昌明盛进出口贸易有限公司
公司地址:厦门市思明区吕岭路1733号创想中心2009-2010单元
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1、应遵守梯形图语言中的语法规定 2、设置中间单元在梯形图中,若多个线圈都受某一触点串并联电路的控制,为简化电路,在梯形图中可设置用该电路控制的辅助继电器,类似于继中的中间继电器。3、分离交织在一起的电路设计梯形图时以线圈为单位,分别考虑继电器电路图中每个线圈受到那些触点和电路的控制,然后画出相应的等效梯形图电路。4常闭触点提供的输入信号的处理设计输入电路时,应尽量采用常开触点,如果只能用常闭触点,梯形图中对应触点的常开/常闭类型应与继电器电路相反。5、时间继电器的瞬动触点的处理对于有瞬动触点的时间继电器,可以在梯形图中对应的定时器的线圈两端并联辅助继电器,后者的触点相当于时间继电器的瞬动触点。6、断电延时的时间电器的处理用通电后延时的定时器来实现断电延时功能。7、外部联锁电路的设计在梯形图中设置对应的输出继电器的线圈串联的常闭触点组成的软件互锁外,还应在PLC外部设置硬件互锁电路。热继电器过载信号的处理1)自动复位型热继电器,其触点提供的过载信号必须通过输入电路提供给PLC,用梯形图实现过载保护;2)手动复位型热继电器,常闭触点可以在PLC的输出电路中与控制电机的交流接触器的线圈串联。9、尽量减少PLC的输入信号和输出信号10、注意PLC输出模块的驱动能力能否满足外部负载的要求。PLC一般只能驱动额定电压在AC220V以下的负载线圈电压为380V的,应将线圈换成220V的,或者在PLC如果系统原来的交流接触器的外部设置中间继电器。OKYM175W22模块备件使用授权 OKYM175W22模块备件使用授权
1. Observe the syntax in ladder diagram language. 2. Set the intermediate unit. In the ladder diagram, if multiple coils are controlled by a series parallel circuit of a contact, in order to simplify the circuit, an auxiliary relay controlled by this circuit can be set in the ladder diagram, which is similar to the intermediate relay in the relay. 3. Separate the intertwined circuit design ladder diagram, take the coil as the unit, respectively consider the control of each coil in the relay circuit diagram by those contacts and circuits, and then draw the corresponding equivalent ladder diagram circuit. 4 processing of input signals provided by normally closed contacts when designing input circuits, normally open contacts should be used as much as possible. If only normally closed contacts can be used, the normally open / normally closed type of the corresponding contacts in the ladder diagram should be opposite to the relay circuit. 5. Processing of instantaneous contact of time relay for time relay with instantaneous contact, the auxiliary relay can be paralleled at both ends of the coil of the corresponding timer in the ladder diagram, and the contact of the latter is equivalent to the instantaneous contact of time relay. 6. The time of power-off delay the processing of electrical appliances uses the timer of power-on delay to realize the function of power-off delay. 7. For the design of external interlocking circuit, in addition to the software interlocking composed of normally closed contacts connected in series with the coil of the corresponding output relay in the ladder diagram, the hardware interlocking circuit should also be set outside the PLC. Processing of overload signal of thermal relay 1) for automatic reset thermal relay, the overload signal provided by its contact must be provided to PLC through input circuit, and the overload protection is realized by ladder diagram; 2) The normally closed contact of the manual reset thermal relay can be connected in series with the coil of the AC contactor controlling the motor in the output circuit of the PLC. 9. Minimize the input and output signals of PLC. 10. Pay attention to whether the driving capacity of PLC output module can meet the requirements of external loads. Generally, PLC can only drive loads with rated voltage below AC220V. If the coil voltage is 380V, the coil should be replaced with 220V, or an intermediate relay should be set outside the original AC contactor of the PLC system.

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