TP4-537A024M,直銷安士能開關
在這種情況下,一個三階段啟用開關是更好,是特別
在要求許多C標準。此開關有三個開關位置
OFF-ON-OFF)和,如果操作者握緊開關,它是致動
出允許位置(中間位置)和機被關閉
如果使用2級的按鈕,它也必須確保的是,在一個
緊急情況下,操作者是在一個位置,以激活緊急停止
enabling device and keeps it in the actuated position. The movement is
stopped again when the switch is released. This two-stage function (OFFON)
is provided by all pushbuttons and all three-stage enabling switches.
However, experience shows that the operator often clenches the enabling
device in an emergency.
In this case a three-stage enabling switch is better and is specifically
requested in many C standards. This switch has three switch positions
OFF-ON-OFF) and, if the operator clenches the switch, it is actuated
然如在圖中可以清楚地看出,啟用功能只能是
階段2實現這個功能是通過的閉幕提供
常開觸點(NO= E1和E2)。
如果按鈕被釋放,也就是從第2階段恢復階段1,
常開觸點再次打開。 2級的按鈕和
3階段啟用開關在這個功能相同。
如果,在這個例子中,3級啟用開關的按鈕被壓而
TP4-537A024M,直銷安士能開關