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Unable to clear E-stop interlock on a 407 controller

Unablet to clear E-stop interlock on a 407 controller even with front panel E-stop button disengaged (Figure 1) and jumper plug on the back of the controller for the external E-stop out connection (Figures 2 & 3).  



Figure 1 – 407 front panel E-stop button with E-stop interlock




Figure 2 – E-stop jumper plug location on a 407 controller


Figure 3 – 407 E-stop jumper plug pin-out






Case Study:


“I was able to solve the problem by taking out the power supply and re-seating all of the connections to the back-plane and front panel.

Keary is the author of this solution article.

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