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General Mach Discussion / Re: Bridgeport Discovery 308 retrofit
« on: December 31, 2007, 02:32:05 PM »
We acquired this machine in a non-working condition, so I am at the disadvantage of not having seen it in action. I am at the mercy of the Installation, Parts, and Maintenance Manual to provide the descriptions of what the machine is supposed to do and how it accomplishes those functions. Unfortunately there are some key misprints in the manual and I believe I may be hung up on one now. In the description for Parameter 18 (Analog Speed Input Scaling) of the spindle drive it states the default is "6-- rpm/volt" I read this to mean 6 rpm/volt or 60 rpm=10V and assumed it was set at this value to achieve better low speed resolution for 0-10V analog signal from the orient card (tool change positioning circuit board) and would not work for regular milling rpms. After closer inspection I see that it also states in parentheses that 6000 rpm=10V and must mean that the default setting is 600 rpm/volt.
If it can be confirmed that parameter 18 is left at its default setting of 600 for both normal run and tool change control functions then I will be off and running with it set to use the analog reference for all spindle speed control.
The serial connection was also used to monitor and set a number of the spindle drive's parameters and bit parameters, will I need to retain the ability for the serial connection to monitor and/or set any of those drive parameters in real time? I see the important ones such as enable, reset, zero speed, drive at speed, external trip, etc. are all hardwired 24V logic I/Os, is that all I will need for full control and functionality?
Thanks.
If it can be confirmed that parameter 18 is left at its default setting of 600 for both normal run and tool change control functions then I will be off and running with it set to use the analog reference for all spindle speed control.
The serial connection was also used to monitor and set a number of the spindle drive's parameters and bit parameters, will I need to retain the ability for the serial connection to monitor and/or set any of those drive parameters in real time? I see the important ones such as enable, reset, zero speed, drive at speed, external trip, etc. are all hardwired 24V logic I/Os, is that all I will need for full control and functionality?
Thanks.