The round connector on the side,
Pin A = Terminal Block 8, pin 5
Pin B = Terminal Block 9, pin 2
Pin C = AR relay pin 11 (Common)
Pin D = AR relay pin 14 (Normally Open)
We have had no luck with any of the Serial to USB adapters.
You will need a computer with a serial port.
Look at the 3 large transistors mounted to the heat sink on the left hand side of the control card - the black aluminum piece that sticks up 90 degrees from the card. Check for any cracks, holes or burned marks-not good.
If the transistors look good, you can only do some voltage tests to check the Control Card without VR Milling.
Turn the machine on, turn the key and release the E-Stop button.
Check for any smoke, or arcing from the 3 transistors - real bad.
Terminal block 11,
Voltage across pins 1 & 2 (drives) = 24VAC (20 to 30 OK)
Voltage across pins 4 & 5 (logic) = 24VAC (20 to 30 OK)
The fuse on the control card is a 6.3 amp.
Open and close the Guard, the GR (guard relay) should open and close.
Press the E-Stop button, the ESR (emergency stop relay) should open. Release the E-Stop button, the ESR should close.
If this checks out, the machine should be OK.
Micromill 2000 year 2002
Moderators: Martin, Steve, Mr Magoo
I am not sure why you have another relay unless the unit was wired to work in a CIM?
The Guard input would have to be made if the machine is to work.
If you linked the two terminals marked red the machine would work.
You should however reinstate a guard switch link between the terminals as the guard opens the link should be broken.
The Guard input would have to be made if the machine is to work.
If you linked the two terminals marked red the machine would work.
You should however reinstate a guard switch link between the terminals as the guard opens the link should be broken.