任务3 西门子V20变频器的按钮操作与运行
任务目的:
1. 熟悉变频器的用外部端子命令操作方法。
2. 熟练变频器的使用方法,学会变频器的接线方法。
3.掌握变频器参数设置
任务引入:
变频器V20系列是德国西门子公司广泛应用与工业场合的多功能标准变频器。它采用高性能的矢量控制技术,提供低速高转矩输出和良好的动态特性,同时具备超强的过载能力,以满足广泛的应用场合。对于变频器的应用,必须首先熟练对变频器的面板操作,以及根据实际应用,对变频器的各种功能参数进行设置。
任务实施 :
一、任务内容
1、通过外部端子控制电机启动/停止、正转/反转,按下按钮“SB1”电机正转启动,频率为15HZ,松开“SB1”电机停止;按下按钮“SB2”电机反转,频率为10HZ,松开按钮“SB2”电机停止。
2、运行操作面板改变电机启动的点动运行频率和加减速时间。
二、工具、材料和设备
西门子V20变频器、小型三相异步电动机、电气控制柜、电工工具(1套)、连接导线若干等。
三、操作方法和步骤
1.按要求接线
根据实训设备情况,设计变频器主、控制电路接线图,检查合格后进行实施。
2.参数设置
(1)复位设置
|
参数号 |
出厂值 |
设置值 |
说明 |
|
P0003 |
1 |
1 |
设定用户访问级为标准级 |
|
P0010 |
|||
|
P970 |
(2)设置电动机参数,为了使电动机与变频器相匹配,需要设置电动机参数。电动机参数设置见表。电动机参数设定完成后,设P0010=0,变频器当前处于准备状态,可正常运行。
|
参数号 |
出厂值 |
设置值 |
说明 |
|
P0003 |
1 |
1 |
设定用户访问级为标准级 |
|
P0010 |
0 |
1 |
快速调试 |
|
P0100 |
0 |
0 |
功率以KW表示,频率为50Hz |
|
P0304 |
|||
|
P0305 |
|||
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P0307 |
|||
|
P0310 |
|||
|
P0311 |
(3)设置面板操作控制参数。
|
参数号 |
出厂值 |
设置值 |
说明 |
四、评价
|
序号 |
主要内容 |
考核要求 |
评分标准 |
配分 |
扣分 |
得分 |
|
1 |
接线 |
能正确使用工具和仪表,按照电路图正确接线 |
1.接线按照不规范,每处扣5-10分 2.接线错误,扣20分 |
30 |
||
|
2 |
参数设置 |
能根据任务要求正确设置 变频器参数 |
1.参数设置不全,每处扣5分 2.参数设置错误,每处扣5分 |
30 |
||
|
3 |
操作调试 |
操作调试过程正确 |
1.变频器操作错误,扣10分 2.调试失败,扣20分 |
20 |
||
|
4 |
安全文明生产 |
操作安全规范、环境整洁 |
违反安全文明生产规程,扣 5-10分 |
20 |
五、问题反馈
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