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Emergency Stop problem
Posted: Wed 22 Feb , 2012 8:54 am
by jeremiahbadana
Hi,
i have been using the Denford Micromill for quite some time, but just yesterday, i encounter a problem on emergency stop. i cannot connect to the machine since it always indicate that it is in emergency stop. i try checking the button but i dont see any problem. may i know where is the ESR (relay) on the board so that i can check on the connection. or if you can suggest other possible source of the problem. thanks. hope you can help me.
JAB
Re: Emergency Stop problem
Posted: Wed 22 Feb , 2012 10:04 am
by bradders
What letter or number does the 7 segment display on the drive board ?
Re: Emergency Stop problem
Posted: Wed 22 Feb , 2012 10:29 am
by Denford Admin
Can you also supply serial number so we know what type of electrical circuit it has.
We've had problems with some of the contact block on the emergency stop button - can you remove it and test it is switching ok with a multi-meter ?
Re: Emergency Stop problem
Posted: Thu 23 Feb , 2012 4:56 am
by jeremiahbadana
the body serial no. E00616 and electric serial no. 00411290041. i clean the contact block of the ES Button by injecting compressed air hoping that it is just a loose contact but still the problem persist. by the way, how can i detach the black contact block so that i can inspect it.
Re: Emergency Stop problem
Posted: Thu 23 Feb , 2012 10:54 am
by Martin
Can you post a photograph of the block?
Re: Emergency Stop problem
Posted: Thu 23 Feb , 2012 11:10 am
by Denford Admin
That machine was made January 2005 - Micromill 2000 CE, shipped with a Nextmove control, Sprint 400 spindle drive and VR Milling version 5.5
You should be able to find the electrical diagrams here:
viewtopic.php?f=36&t=2929
Re: Emergency Stop problem
Posted: Mon 27 Feb , 2012 8:36 am
by jeremiahbadana
i am posting pictures of the circuit board.
Re: Emergency Stop problem
Posted: Mon 27 Feb , 2012 8:40 am
by Martin
Have you checked the Emergency Stop Push Button?
Re: Emergency Stop problem
Posted: Mon 27 Feb , 2012 10:27 am
by Steve
The relay you point out is the E-Stop relay. This should energise as you release the E-stop and drop out as you press the E-stop. Can you check if this happens?
I have highlighted the E-Stop circuit. The E-Stop will release provided the EStop is released (contact closed) and the reset key is also closed.
You can check this by dabbing a link wire from Pins 3 to pin 6 on Conn 6 This is shown in the diagram in red and will cause the E-stop relay to energise. If it drops out as the link is removed then the EStop contact is faulty.
Yopu can also check with a meter from pins 3 - 4 for continuity. There should be continuity when the E-Stop button is released.
I would try and vacuum the E-Stop contact block while pressing and releasing it.