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General Mach Discussion / Upgrading Benchman VMC-5000
« on: April 13, 2011, 07:33:59 AM »
Hello everybody,
We are students from the University of applied science of Amsterdam. We have been assigned a project to upgrade the Benchman VMC-5000 CNC milling machine from light machines corporation with Mach3.
The last couple of weeks we have been trying to figure out what kind of hardware changes we have to make to get the machine to work with the Mach3 software.
The ting is we sort of hit a wall in that we arent sure what our best course of action would be, at the moment we are thinking of ordering a breakoutboard from some place and put a interface print behind it that can supply a Industry standard -10V - +10V signal to the drivers. If this is the correct course of actions do you have any suggestions for a good breakoutboard and interface print.
What we have found out so far is that the machine has three servo motors from Litton Clifton precision, the specs of these motors are according to National Instruments the following:
Tc = Continuous stall torque
Ic = Continuous stall current
Vr = Rated Voltage
Tpk = Peak Torque
Kt = Torque Constant
Kv = Voltage Constant
Vmax = Maximum Rated Voltage
Series: C23
Model: C23-L50-W50
Size: N23
Max Tc (N-cm): 29,7
Max Ic (A): 1
Max Vr (V):
Tpk (N-cm) : 254,2
Kt (N-cm/A): 30,6
Kv (V/krpm): 32
Vmax (V):
Max rpm (rpm)*: 7396
They are controlled by a copley control 412 driver.
Here is a link to the datasheet:
http://www.copleycontrols.com/motion/pdf/412ce.pdf
The system is equipped with two limit switches per axis, the limit switches are normally closed.
There are also a couple of PCB's that we think provide the communication with the PC but we aren't sure about this since we don't have any schematics for these PCB's.
We got pictures from the machine if it would help I am willing to upload them.
Kind Regards
J Borst
We are students from the University of applied science of Amsterdam. We have been assigned a project to upgrade the Benchman VMC-5000 CNC milling machine from light machines corporation with Mach3.
The last couple of weeks we have been trying to figure out what kind of hardware changes we have to make to get the machine to work with the Mach3 software.
The ting is we sort of hit a wall in that we arent sure what our best course of action would be, at the moment we are thinking of ordering a breakoutboard from some place and put a interface print behind it that can supply a Industry standard -10V - +10V signal to the drivers. If this is the correct course of actions do you have any suggestions for a good breakoutboard and interface print.
What we have found out so far is that the machine has three servo motors from Litton Clifton precision, the specs of these motors are according to National Instruments the following:
Tc = Continuous stall torque
Ic = Continuous stall current
Vr = Rated Voltage
Tpk = Peak Torque
Kt = Torque Constant
Kv = Voltage Constant
Vmax = Maximum Rated Voltage
Series: C23
Model: C23-L50-W50
Size: N23
Max Tc (N-cm): 29,7
Max Ic (A): 1
Max Vr (V):
Tpk (N-cm) : 254,2
Kt (N-cm/A): 30,6
Kv (V/krpm): 32
Vmax (V):
Max rpm (rpm)*: 7396
They are controlled by a copley control 412 driver.
Here is a link to the datasheet:
http://www.copleycontrols.com/motion/pdf/412ce.pdf
The system is equipped with two limit switches per axis, the limit switches are normally closed.
There are also a couple of PCB's that we think provide the communication with the PC but we aren't sure about this since we don't have any schematics for these PCB's.
We got pictures from the machine if it would help I am willing to upload them.
Kind Regards
J Borst