Dynomotion

Group: DynoMotion Message: 1249 From: morgtod Date: 6/4/2011
Subject: Snap Amp voltage
I can get my snap amp to reset and drive the brushed servos using a 24 volt supply, but when I hook up the main 75 volt supply it will not reset( the 2nd led stays on ). I've tried voltage clamping settings with no luck, and amperage settings with no luck. The 75 volt supply has very large caps for filtering.

What am I missing???

Todd
Group: DynoMotion Message: 1250 From: Tom Kerekes Date: 6/4/2011
Subject: Re: Snap Amp voltage
Hi Todd,
 
What settings are you using?  Do not attempt to clamp the voltage below the power supply voltage.  If your supply is 75V then clamp at 80V.
 
Also post your axis configuration.  Does the SnapAmp Fault light remain off after the SnapAmp Current limits are set and then go on when the axis is enabled?  Work within KMotion.exe not Mach3 to troubleshoot hardware issues.
 
Regards
TK

--- On Sat, 6/4/11, morgtod <todmorg@...> wrote:

From: morgtod <todmorg@...>
Subject: [DynoMotion] Snap Amp voltage
To: DynoMotion@yahoogroups.com
Date: Saturday, June 4, 2011, 7:23 PM

 
I can get my snap amp to reset and drive the brushed servos using a 24 volt supply, but when I hook up the main 75 volt supply it will not reset( the 2nd led stays on ). I've tried voltage clamping settings with no luck, and amperage settings with no luck. The 75 volt supply has very large caps for filtering.

What am I missing???

Todd
Group: DynoMotion Message: 1251 From: morgtod Date: 6/4/2011
Subject: Re: Snap Amp voltage
Tom,
I set the clamp at 85, the light never goes off, even with all axis's disabled. I am using kmotion and KmotionCNC.
Todd

--- In DynoMotion@yahoogroups.com, Tom Kerekes <tk@...> wrote:
>
> Hi Todd,
>  
> What settings are you using?  Do not attempt to clamp the voltage below the power supply voltage.  If your supply is 75V then clamp at 80V.
>  
> Also post your axis configuration.  Does the SnapAmp Fault light remain off after the SnapAmp Current limits are set and then go on when the axis is enabled?  Work within KMotion.exe not Mach3 to troubleshoot hardware issues.
>  
> Regards
> TK
>
> --- On Sat, 6/4/11, morgtod <todmorg@...> wrote:
>
>
> From: morgtod <todmorg@...>
> Subject: [DynoMotion] Snap Amp voltage
> To: DynoMotion@yahoogroups.com
> Date: Saturday, June 4, 2011, 7:23 PM
>
>
>  
>
>
>
> I can get my snap amp to reset and drive the brushed servos using a 24 volt supply, but when I hook up the main 75 volt supply it will not reset( the 2nd led stays on ). I've tried voltage clamping settings with no luck, and amperage settings with no luck. The 75 volt supply has very large caps for filtering.
>
> What am I missing???
>
> Todd
>
Group: DynoMotion Message: 1253 From: Tom Kerekes Date: 6/4/2011
Subject: Re: Snap Amp voltage
Hi Todd,
 
What peak current settings have you tried?  Fault doesn't go off even with a setting of 12 on both sides?
 
TK 

--- On Sat, 6/4/11, morgtod <todmorg@...> wrote:

From: morgtod <todmorg@...>
Subject: [DynoMotion] Re: Snap Amp voltage
To: DynoMotion@yahoogroups.com
Date: Saturday, June 4, 2011, 7:43 PM

 
Tom,
I set the clamp at 85, the light never goes off, even with all axis's disabled. I am using kmotion and KmotionCNC.
Todd

--- In DynoMotion@yahoogroups.com, Tom Kerekes <tk@...> wrote:
>
> Hi Todd,
>  
> What settings are you using?  Do not attempt to clamp the voltage below the power supply voltage.  If your supply is 75V then clamp at 80V.
>  
> Also post your axis configuration.  Does the SnapAmp Fault light remain off after the SnapAmp Current limits are set and then go on when the axis is enabled?  Work within KMotion.exe not Mach3 to troubleshoot hardware issues.
>  
> Regards
> TK
>
> --- On Sat, 6/4/11, morgtod <todmorg@...> wrote:
>
>
> From: morgtod <todmorg@...>
> Subject: [DynoMotion] Snap Amp voltage
> To: DynoMotion@yahoogroups.com
> Date: Saturday, June 4, 2011, 7:23 PM
>
>
>  
>
>
>
> I can get my snap amp to reset and drive the brushed servos using a 24 volt supply, but when I hook up the main 75 volt supply it will not reset( the 2nd led stays on ). I've tried voltage clamping settings with no luck, and amperage settings with no luck. The 75 volt supply has very large caps for filtering.
>
> What am I missing???
>
> Todd
>
Group: DynoMotion Message: 1256 From: morgtod Date: 6/5/2011
Subject: Re: Snap Amp voltage
Tom,

I turned off the power to a VFD that is mounted close to the kflop/kanalog/snapamp and now I can reset the snapamp with the 75 volt supply. It looks like the VFD is going to have to be moved or shielded somehow. As a side note, I was getting a lot of usb resets with the VFD on, with it off there are none.

Thanks again,
Todd

--- In DynoMotion@yahoogroups.com, Tom Kerekes <tk@...> wrote:
>
> Hi Todd,
>  
> What peak current settings have you tried?  Fault doesn't go off even with a setting of 12 on both sides?
>  
> TK 
>
> --- On Sat, 6/4/11, morgtod <todmorg@...> wrote:
>
>
> From: morgtod <todmorg@...>
> Subject: [DynoMotion] Re: Snap Amp voltage
> To: DynoMotion@yahoogroups.com
> Date: Saturday, June 4, 2011, 7:43 PM
>
>
>  
>
>
>
> Tom,
> I set the clamp at 85, the light never goes off, even with all axis's disabled. I am using kmotion and KmotionCNC.
> Todd
>
> --- In DynoMotion@yahoogroups.com, Tom Kerekes <tk@> wrote:
> >
> > Hi Todd,
> >  
> > What settings are you using?  Do not attempt to clamp the voltage below the power supply voltage.  If your supply is 75V then clamp at 80V.
> >  
> > Also post your axis configuration.  Does the SnapAmp Fault light remain off after the SnapAmp Current limits are set and then go on when the axis is enabled?  Work within KMotion.exe not Mach3 to troubleshoot hardware issues.
> >  
> > Regards
> > TK
> >
> > --- On Sat, 6/4/11, morgtod <todmorg@> wrote:
> >
> >
> > From: morgtod <todmorg@>
> > Subject: [DynoMotion] Snap Amp voltage
> > To: DynoMotion@yahoogroups.com
> > Date: Saturday, June 4, 2011, 7:23 PM
> >
> >
> >  
> >
> >
> >
> > I can get my snap amp to reset and drive the brushed servos using a 24 volt supply, but when I hook up the main 75 volt supply it will not reset( the 2nd led stays on ). I've tried voltage clamping settings with no luck, and amperage settings with no luck. The 75 volt supply has very large caps for filtering.
> >
> > What am I missing???
> >
> > Todd
> >
>
Group: DynoMotion Message: 1268 From: carlcnc Date: 6/13/2011
Subject: Re: Snap Amp voltage
Todd
sounds like you need some filtering on the incoming power to your VFD, a line reactor is best,do a search on ebay.

is the vfd wired direct to a breaker? or do you have a contactor
for powering it on/off? I used to have a lot of issues with contactors creating emf bursts when they were cycled
even with shielding that caused lots of errors on limit switch and encoder lines,
Carl

--- In DynoMotion@yahoogroups.com, "morgtod" <todmorg@...> wrote:
>
> Tom,
>
> I turned off the power to a VFD that is mounted close to the kflop/kanalog/snapamp and now I can reset the snapamp with the 75 volt supply. It looks like the VFD is going to have to be moved or shielded somehow. As a side note, I was getting a lot of usb resets with the VFD on, with it off there are none.
>
> Thanks again,
> Todd
>
> --- In DynoMotion@yahoogroups.com, Tom Kerekes <tk@> wrote:
> >
> > Hi Todd,
> >  
> > What peak current settings have you tried?  Fault doesn't go off even with a setting of 12 on both sides?
> >  
> > TK 
> >
> > --- On Sat, 6/4/11, morgtod <todmorg@> wrote:
> >
> >
> > From: morgtod <todmorg@>
> > Subject: [DynoMotion] Re: Snap Amp voltage
> > To: DynoMotion@yahoogroups.com
> > Date: Saturday, June 4, 2011, 7:43 PM
> >
> >
> >  
> >
> >
> >
> > Tom,
> > I set the clamp at 85, the light never goes off, even with all axis's disabled. I am using kmotion and KmotionCNC.
> > Todd
> >
> > --- In DynoMotion@yahoogroups.com, Tom Kerekes <tk@> wrote:
> > >
> > > Hi Todd,
> > >  
> > > What settings are you using?  Do not attempt to clamp the voltage below the power supply voltage.  If your supply is 75V then clamp at 80V.
> > >  
> > > Also post your axis configuration.  Does the SnapAmp Fault light remain off after the SnapAmp Current limits are set and then go on when the axis is enabled?  Work within KMotion.exe not Mach3 to troubleshoot hardware issues.
> > >  
> > > Regards
> > > TK
> > >
> > > --- On Sat, 6/4/11, morgtod <todmorg@> wrote:
> > >
> > >
> > > From: morgtod <todmorg@>
> > > Subject: [DynoMotion] Snap Amp voltage
> > > To: DynoMotion@yahoogroups.com
> > > Date: Saturday, June 4, 2011, 7:23 PM
> > >
> > >
> > >  
> > >
> > >
> > >
> > > I can get my snap amp to reset and drive the brushed servos using a 24 volt supply, but when I hook up the main 75 volt supply it will not reset( the 2nd led stays on ). I've tried voltage clamping settings with no luck, and amperage settings with no luck. The 75 volt supply has very large caps for filtering.
> > >
> > > What am I missing???
> > >
> > > Todd
> > >
> >
>
Group: DynoMotion Message: 1269 From: oxforduniv Date: 6/13/2011
Subject: Re: Snap Amp voltage
I have found more often than not, it is a grounding and bonding issue.
Remember your PC and USB port is at the same reference to your mains fed motor, the PC via the grounded P.S. and the motor feed via the grounded neutral.
Using command isolation does not remove this reference.
Industry standard bonding of motor frame and machine to the common ground point that should also have the system ground and the PC case ground connected to it has eliminated command noise problems in the past.
Al..
--- In DynoMotion@yahoogroups.com, "carlcnc" <cebcnc@...> wrote:
>
> Todd
> sounds like you need some filtering on the incoming power to your VFD, a line reactor is best,do a search on ebay.
>
> is the vfd wired direct to a breaker? or do you have a contactor
> for powering it on/off? I used to have a lot of issues with contactors creating emf bursts when they were cycled
> even with shielding that caused lots of errors on limit switch and encoder lines,
> Carl
>
> --- In DynoMotion@yahoogroups.com, "morgtod" <todmorg@> wrote:
> >
> > Tom,
> >
> > I turned off the power to a VFD that is mounted close to the kflop/kanalog/snapamp and now I can reset the snapamp with the 75 volt supply. It looks like the VFD is going to have to be moved or shielded somehow. As a side note, I was getting a lot of usb resets with the VFD on, with it off there are none.
> >
> > Thanks again,
> > Todd
> >
> > --- In DynoMotion@yahoogroups.com, Tom Kerekes <tk@> wrote:
> > >
> > > Hi Todd,
> > >  
> > > What peak current settings have you tried?  Fault doesn't go off even with a setting of 12 on both sides?
> > >  
> > > TK 
> > >
> > > --- On Sat, 6/4/11, morgtod <todmorg@> wrote:
> > >
> > >
> > > From: morgtod <todmorg@>
> > > Subject: [DynoMotion] Re: Snap Amp voltage
> > > To: DynoMotion@yahoogroups.com
> > > Date: Saturday, June 4, 2011, 7:43 PM
> > >
> > >
> > >  
> > >
> > >
> > >
> > > Tom,
> > > I set the clamp at 85, the light never goes off, even with all axis's disabled. I am using kmotion and KmotionCNC.
> > > Todd
> > >
> > > --- In DynoMotion@yahoogroups.com, Tom Kerekes <tk@> wrote:
> > > >
> > > > Hi Todd,
> > > >  
> > > > What settings are you using?  Do not attempt to clamp the voltage below the power supply voltage.  If your supply is 75V then clamp at 80V.
> > > >  
> > > > Also post your axis configuration.  Does the SnapAmp Fault light remain off after the SnapAmp Current limits are set and then go on when the axis is enabled?  Work within KMotion.exe not Mach3 to troubleshoot hardware issues.
> > > >  
> > > > Regards
> > > > TK
> > > >
> > > > --- On Sat, 6/4/11, morgtod <todmorg@> wrote:
> > > >
> > > >
> > > > From: morgtod <todmorg@>
> > > > Subject: [DynoMotion] Snap Amp voltage
> > > > To: DynoMotion@yahoogroups.com
> > > > Date: Saturday, June 4, 2011, 7:23 PM
> > > >
> > > >
> > > >  
> > > >
> > > >
> > > >
> > > > I can get my snap amp to reset and drive the brushed servos using a 24 volt supply, but when I hook up the main 75 volt supply it will not reset( the 2nd led stays on ). I've tried voltage clamping settings with no luck, and amperage settings with no luck. The 75 volt supply has very large caps for filtering.
> > > >
> > > > What am I missing???
> > > >
> > > > Todd
> > > >
> > >
> >
>
Group: DynoMotion Message: 1270 From: Tom Kerekes Date: 6/13/2011
Subject: Re: Snap Amp voltage
BTW Todd reported to me that he found a bad/intermitten +5V connection or connector to Kanalog where he was applying +5V to the system.  After fixing that a whole number of issues went away.  It doesn't really make sense to me, but I'm not one to argue with success.  :}
 
TK

--- On Mon, 6/13/11, oxforduniv <oxforduniv@...> wrote:

From: oxforduniv <oxforduniv@...>
Subject: [DynoMotion] Re: Snap Amp voltage
To: DynoMotion@yahoogroups.com
Date: Monday, June 13, 2011, 8:20 AM

 

I have found more often than not, it is a grounding and bonding issue.
Remember your PC and USB port is at the same reference to your mains fed motor, the PC via the grounded P.S. and the motor feed via the grounded neutral.
Using command isolation does not remove this reference.
Industry standard bonding of motor frame and machine to the common ground point that should also have the system ground and the PC case ground connected to it has eliminated command noise problems in the past.
Al..
--- In DynoMotion@yahoogroups.com, "carlcnc" <cebcnc@...> wrote:
>
> Todd
> sounds like you need some filtering on the incoming power to your VFD, a line reactor is best,do a search on ebay.
>
> is the vfd wired direct to a breaker? or do you have a contactor
> for powering it on/off? I used to have a lot of issues with contactors creating emf bursts when they were cycled
> even with shielding that caused lots of errors on limit switch and encoder lines,
> Carl
>
> --- In DynoMotion@yahoogroups.com, "morgtod" <todmorg@> wrote:
> >
> > Tom,
> >
> > I turned off the power to a VFD that is mounted close to the kflop/kanalog/snapamp and now I can reset the snapamp with the 75 volt supply. It looks like the VFD is going to have to be moved or shielded somehow. As a side note, I was getting a lot of usb resets with the VFD on, with it off there are none.
> >
> > Thanks again,
> > Todd
> >
> > --- In DynoMotion@yahoogroups.com, Tom Kerekes <tk@> wrote:
> > >
> > > Hi Todd,
> > >  
> > > What peak current settings have you tried?  Fault doesn't go off even with a setting of 12 on both sides?
> > >  
> > > TK 
> > >
> > > --- On Sat, 6/4/11, morgtod <todmorg@> wrote:
> > >
> > >
> > > From: morgtod <todmorg@>
> > > Subject: [DynoMotion] Re: Snap Amp voltage
> > > To: DynoMotion@yahoogroups.com
> > > Date: Saturday, June 4, 2011, 7:43 PM
> > >
> > >
> > >  
> > >
> > >
> > >
> > > Tom,
> > > I set the clamp at 85, the light never goes off, even with all axis's disabled. I am using kmotion and KmotionCNC.
> > > Todd
> > >
> > > --- In DynoMotion@yahoogroups.com, Tom Kerekes <tk@> wrote:
> > > >
> > > > Hi Todd,
> > > >  
> > > > What settings are you using?  Do not attempt to clamp the voltage below the power supply voltage.  If your supply is 75V then clamp at 80V.
> > > >  
> > > > Also post your axis configuration.  Does the SnapAmp Fault light remain off after the SnapAmp Current limits are set and then go on when the axis is enabled?  Work within KMotion.exe not Mach3 to troubleshoot hardware issues.
> > > >  
> > > > Regards
> > > > TK
> > > >
> > > > --- On Sat, 6/4/11, morgtod <todmorg@> wrote:
> > > >
> > > >
> > > > From: morgtod <todmorg@>
> > > > Subject: [DynoMotion] Snap Amp voltage
> > > > To: DynoMotion@yahoogroups.com
> > > > Date: Saturday, June 4, 2011, 7:23 PM
> > > >
> > > >
> > > >  
> > > >
> > > >
> > > >
> > > > I can get my snap amp to reset and drive the brushed servos using a 24 volt supply, but when I hook up the main 75 volt supply it will not reset( the 2nd led stays on ). I've tried voltage clamping settings with no luck, and amperage settings with no luck. The 75 volt supply has very large caps for filtering.
> > > >
> > > > What am I missing???
> > > >
> > > > Todd
> > > >
> > >
> >
>
Group: DynoMotion Message: 1272 From: carlcnc Date: 6/13/2011
Subject: Re: Snap Amp voltage
hmmm
a marginal 5v supply?
I had a 24v supply that inexplicably,occasionally would just crap out, or
suffer a voltage drop of several volts,then recover
intermittent really sucks!
it was a lambda switcher. and the only bad one out about 20 of the same model


--- In DynoMotion@yahoogroups.com, Tom Kerekes <tk@...> wrote:
>
> BTW Todd reported to me that he found a bad/intermitten +5V connection or connector to Kanalog where he was applying +5V to the system.  After fixing that a whole number of issues went away.  It doesn't really make sense to me, but I'm not one to argue with success.  :}
>  
> TK
>
> --- On Mon, 6/13/11, oxforduniv <oxforduniv@...> wrote:
>
>
> From: oxforduniv <oxforduniv@...>
> Subject: [DynoMotion] Re: Snap Amp voltage
> To: DynoMotion@yahoogroups.com
> Date: Monday, June 13, 2011, 8:20 AM
>
>
>  
>
>
>
>
> I have found more often than not, it is a grounding and bonding issue.
> Remember your PC and USB port is at the same reference to your mains fed motor, the PC via the grounded P.S. and the motor feed via the grounded neutral.
> Using command isolation does not remove this reference.
> Industry standard bonding of motor frame and machine to the common ground point that should also have the system ground and the PC case ground connected to it has eliminated command noise problems in the past.
> Al..
> --- In DynoMotion@yahoogroups.com, "carlcnc" <cebcnc@> wrote:
> >
> > Todd
> > sounds like you need some filtering on the incoming power to your VFD, a line reactor is best,do a search on ebay.
> >
> > is the vfd wired direct to a breaker? or do you have a contactor
> > for powering it on/off? I used to have a lot of issues with contactors creating emf bursts when they were cycled
> > even with shielding that caused lots of errors on limit switch and encoder lines,
> > Carl
> >
> > --- In DynoMotion@yahoogroups.com, "morgtod" <todmorg@> wrote:
> > >
> > > Tom,
> > >
> > > I turned off the power to a VFD that is mounted close to the kflop/kanalog/snapamp and now I can reset the snapamp with the 75 volt supply. It looks like the VFD is going to have to be moved or shielded somehow. As a side note, I was getting a lot of usb resets with the VFD on, with it off there are none.
> > >
> > > Thanks again,
> > > Todd
> > >
> > > --- In DynoMotion@yahoogroups.com, Tom Kerekes <tk@> wrote:
> > > >
> > > > Hi Todd,
> > > >  
> > > > What peak current settings have you tried?  Fault doesn't go off even with a setting of 12 on both sides?
> > > >  
> > > > TK 
> > > >
> > > > --- On Sat, 6/4/11, morgtod <todmorg@> wrote:
> > > >
> > > >
> > > > From: morgtod <todmorg@>
> > > > Subject: [DynoMotion] Re: Snap Amp voltage
> > > > To: DynoMotion@yahoogroups.com
> > > > Date: Saturday, June 4, 2011, 7:43 PM
> > > >
> > > >
> > > >  
> > > >
> > > >
> > > >
> > > > Tom,
> > > > I set the clamp at 85, the light never goes off, even with all axis's disabled. I am using kmotion and KmotionCNC.
> > > > Todd
> > > >
> > > > --- In DynoMotion@yahoogroups.com, Tom Kerekes <tk@> wrote:
> > > > >
> > > > > Hi Todd,
> > > > >  
> > > > > What settings are you using?  Do not attempt to clamp the voltage below the power supply voltage.  If your supply is 75V then clamp at 80V.
> > > > >  
> > > > > Also post your axis configuration.  Does the SnapAmp Fault light remain off after the SnapAmp Current limits are set and then go on when the axis is enabled?  Work within KMotion.exe not Mach3 to troubleshoot hardware issues.
> > > > >  
> > > > > Regards
> > > > > TK
> > > > >
> > > > > --- On Sat, 6/4/11, morgtod <todmorg@> wrote:
> > > > >
> > > > >
> > > > > From: morgtod <todmorg@>
> > > > > Subject: [DynoMotion] Snap Amp voltage
> > > > > To: DynoMotion@yahoogroups.com
> > > > > Date: Saturday, June 4, 2011, 7:23 PM
> > > > >
> > > > >
> > > > >  
> > > > >
> > > > >
> > > > >
> > > > > I can get my snap amp to reset and drive the brushed servos using a 24 volt supply, but when I hook up the main 75 volt supply it will not reset( the 2nd led stays on ). I've tried voltage clamping settings with no luck, and amperage settings with no luck. The 75 volt supply has very large caps for filtering.
> > > > >
> > > > > What am I missing???
> > > > >
> > > > > Todd
> > > > >
> > > >
> > >
> >
>