Wiring: Keeping the Mitsubishi Drives Powered when E-Stop

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On some older benders, the Mitsubishi drives power down when E-Stop is pressed. This approach causes the Feed and Rotate axes to loose the HOME status in the I2T modules when the E-Stop is pressed.

So with newer CNC Bender software, it is necessary to keep the Mitsubishi drivers powered - even when the E-Stop is activated.

Gear warning.jpg WARNING!

Only experienced electrical technicians should perform what we describe next.

There can be high voltages and currents of electricity flowing through the electrical panel.



STEP 1: Check the State of the Drives at E-Stop

Set MASTER POWER ON, Press the E-Stop, then examine the drives LED screens. If they are blank, then the drives are off, and you will need to perform this wiring change during a CNC Bender upgrade.

This drive is off. The screen is black.

MitsubishiDriveOffAtEStop.jpg

STEP 2: Find Three Wires

Find the three wires entering the top left side of the white fuse buse to the left of the Feed drives.

MitsubishiDriveOffAtEStop02.jpg

  • The wires will be labelled 3L1, 3L2, and 3L3.
  • Trace those wires to the M-2 contactor. (Find the other end.)

STEP 2: Attach a Power Line

Tap into power by finding wires 2432 at the terminal strip. Run a wire from the strip up to an into point 21 of the M-1 contactor

MitusubishiResetLines03.jpg
MitusubishiResetLines04.jpg

STEP 3: Run the Mitsubishi RESET Wire To M-2

  • Run wire from point 14 in the CN1B cable on the Mitsubishi drives to point 21 of the M-2 connector.
  • There is a cable running from both the Feed and Rotate drives. Point 14 from both cables must be found and used to connect to the M-2 contactor.
  • If the cable is a stock Mitsubishi cable, then there will be many wires in the cable. Wire 14 will be white with a green stripe
  • If there is no wire 14, then you will need to run a small wire (24 AWG) into the connector at the drives. The connectors use solder cups. Solder the wire into point 14 at the CN1B connector.


MitusubishiResetLines05.jpg
MitusubishiResetLines06.jpg

Finished! - Circuit Created

This is an image that shows the circuit created. Click on the image to see a closeup.
MitusubishiResetLines07.jpg

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