Air pressure proving switch on Bridgeport V2XT or Boss

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Beagle Beagle
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Air pressure proving switch on Bridgeport V2XT or Boss

Post by Beagle Beagle »

Got another mind blowing question for you guys. On a Bridgeport V2XT or Boss. Your spindle speed and brake are pneumatically controlled. There is a air pressure proving switch which originally prevented the machine from going forward if somebody forgot to turn the air on. What circuit can I use for this puppy on a All In One. Thanks in advance. Bob L
Bridgeport V2XT, All In One DC #A900779. Using existing SEM motors 112 Volt. Spindle to be controlled by Lenze AC Tech VFD mod #ESV222N02YXB. Machine is being run on 208 3Phase power.
tblough
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Re: Air pressure proving switch on Bridgeport V2XT or Boss

Post by tblough »

Add it to the spindle fault?
Cheers,

Tom
Confidence is the feeling you have before you fully understand the situation.
I have CDO. It's like OCD, but the letters are where they should be.
Beagle Beagle
Posts: 77
Joined: Sat Oct 19, 2019 3:53 pm
Acorn CNC Controller: No
Allin1DC CNC Controller: Yes
Oak CNC controller: No
CNC Control System Serial Number: A900779
DC3IOB: No
CNC12: Yes
CNC11: No
CPU10 or CPU7: No
Location: Hoboken, NJ
Contact:

Re: Air pressure proving switch on Bridgeport V2XT or Boss

Post by Beagle Beagle »

You wouldn't like to explain that in English would ya?
Bridgeport V2XT, All In One DC #A900779. Using existing SEM motors 112 Volt. Spindle to be controlled by Lenze AC Tech VFD mod #ESV222N02YXB. Machine is being run on 208 3Phase power.
cncsnw
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Re: Air pressure proving switch on Bridgeport V2XT or Boss

Post by cncsnw »

That would mean to wire the air pressure switch in series with your normally-closed spindle drive fault signal, so that either a spindle drive fault or lack of air pressure would open INP10, and cause a spindle fault to be reported.

If you would prefer to have a distinct message for low air pressure, then just wire it to an unused input (e.g. INP14, INP15 or INP16) and add a custom error or fault condition and message as described here:
http://www.cncsnw.com/PLCApplicationsMPU11.htm
Beagle Beagle
Posts: 77
Joined: Sat Oct 19, 2019 3:53 pm
Acorn CNC Controller: No
Allin1DC CNC Controller: Yes
Oak CNC controller: No
CNC Control System Serial Number: A900779
DC3IOB: No
CNC12: Yes
CNC11: No
CPU10 or CPU7: No
Location: Hoboken, NJ
Contact:

Re: Air pressure proving switch on Bridgeport V2XT or Boss

Post by Beagle Beagle »

Now were talking! Thanks
Bridgeport V2XT, All In One DC #A900779. Using existing SEM motors 112 Volt. Spindle to be controlled by Lenze AC Tech VFD mod #ESV222N02YXB. Machine is being run on 208 3Phase power.
Beagle Beagle
Posts: 77
Joined: Sat Oct 19, 2019 3:53 pm
Acorn CNC Controller: No
Allin1DC CNC Controller: Yes
Oak CNC controller: No
CNC Control System Serial Number: A900779
DC3IOB: No
CNC12: Yes
CNC11: No
CPU10 or CPU7: No
Location: Hoboken, NJ
Contact:

Re: Air pressure proving switch on Bridgeport V2XT or Boss

Post by Beagle Beagle »

Let me ask a question. What exactly is a spindle fault? I mean as far as I know it just turns. So what exactly could go wrong with the spindle? Thanks, Bob L
Bridgeport V2XT, All In One DC #A900779. Using existing SEM motors 112 Volt. Spindle to be controlled by Lenze AC Tech VFD mod #ESV222N02YXB. Machine is being run on 208 3Phase power.
cncsnw
Posts: 3763
Joined: Wed Mar 24, 2010 5:48 pm

Re: Air pressure proving switch on Bridgeport V2XT or Boss

Post by cncsnw »

That is short for "spindle drive fault". The spindle drive is a component -- either a VFD or a reversing motor starter with an overload relay -- that controls the power going to the spindle motor.

Usually, the spindle "just turns". But what if you ask your 3HP spindle to take a 10HP cut? What if one of the three power leads going to the motor gets broken, so the motor cannot start turning? What if you ask your VFD to actively decelerate a 6" fly cutter from 1000RPM in two seconds, and the VFD is unable to absorb and dissipate the energy fast enough? What if there is a short-circuit in the motor windings? What if the spindle bearings seize up so the motor cannot start?

All of those things would generally cause a VFD to shut off and report a fault condition; or would cause the overload relay on a motor starter to trip. That is what "spindle fault" should mean.
Beagle Beagle
Posts: 77
Joined: Sat Oct 19, 2019 3:53 pm
Acorn CNC Controller: No
Allin1DC CNC Controller: Yes
Oak CNC controller: No
CNC Control System Serial Number: A900779
DC3IOB: No
CNC12: Yes
CNC11: No
CPU10 or CPU7: No
Location: Hoboken, NJ
Contact:

Re: Air pressure proving switch on Bridgeport V2XT or Boss

Post by Beagle Beagle »

Got the picture. Thanks
Bridgeport V2XT, All In One DC #A900779. Using existing SEM motors 112 Volt. Spindle to be controlled by Lenze AC Tech VFD mod #ESV222N02YXB. Machine is being run on 208 3Phase power.
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