The following screenshot shows the grid offset parameter group. The group number for grid offset parameters is 140 and the number that precedes it is the axis designation. For example, parameter 1.140, is the grid offset parameter for the X Axis.

This procedure tells you how to change the axes that show in the Positions box. The Positions box displays a maximum of 5 axes.

Push [POSITION].

Push [ALTER].

Select the axes you want to view in the Positions box.

You must de-select an axis if there are more than the maximum of 5 axes.

For this procedure we will remove the C axis and add the T axis.

Navigate to the C axis [1].

Push [ENTER] to remove the mark from the box.

The C axis goes away from the Positions box.

Navigate to the T axis [2].

Push [ENTER] to mark the box.

The T axis appears in the Positions box [3].

Push [ALTER] to close.

Note: This section only applies to setting the Grid offset for stand alone rotaries. For setting grid offsets for other axis refer to the next section. 

Warning: Only set a grid offset if ALARM 165 AXIS ZERO RETURN MARGIN IS TOO SMALL is generated when zero returning a rotary axis. If you have a dual axis rotary this only needs to be done for the axis that generates the alarm. 

If you zero return a rotary axis and get ALARM 165 AXIS ZERO RETURN MARGIN IS TOO SMALL. Go to Setting -> Rotary then highlight the axis that generated the alarm. Select Set Offsets [1] by pressing [ALTER]. Press 2 [2] to select Set Grid Offset to set the grid offset. 

If grid or tool changer offsets have been made they can be saved for future use or transferred to a different machine.

Press F2 [1] then you will be prompted to name the new rotary file. This text will appear in the name column of the rotary table. 

The file can be found in list program -> User data -> My Rotary. New files will have the name ROT_[name you gave the file]_[default rotary file name].

You will need a Haas Control Key.

• Refer to NGC - Make a Haas Control Key.

Push [ZERO RETURN].

Push [ALL].

Push [DIAGNOSTIC].

Navigate to the Parameters tab.

Navigate to the Factory tab.

Type GRID and then press F1.

• This shows all parameters that have the word "GRID" in the parameter name. 

Type the axis letter you are setting (for example, 'X'), and then press F4 to set the grid offset for X.

If you need to set other grid offsets, repeat Step 1 but enter the corresponding axis letter.

This changes the Grid Offset parameters. For example, the letters X, Y, and Z set these Parameters:

• 1.140 X_AXIS GRID OFFSET
• 2.140 Y_AXIS GRID OFFSET
• 3.140 Z_AXIS GRID OFFSET
• 5.140 A_AXIS GRID OFFSET
• 6.140 B_AXIS GRID OFFSET
• 7.140 C_AXIS GRID OFFSET

For the T-Axis Grid Offset refer to Next Generation Control - Servo-Driven SMTC - Grid Offset and Tool Changer Offset.

For Lathe, TT-axis Offsets refer to TL-1/2 TT4 Tool Changer Offsets NGC

Sigma-5 servo motors, non-contact encoders output serial data signal to the control. If the serial data signal is missing or becomes unreliable the control will generate a serial data communication error. Electrical noise can cause the serial data signal from the encoder to become unreliable and cause false alarms. Follow the troubleshooting guide below to help eliminate the noise in the system.

1. Incorrect machine grounding. Make sure the ground wire size is correct. Also the ground wire should run all the way back to the electrical panel.
2. Noise from other equipment. Make sure the machine does not share it's electrical service with another machine.
3. Loose encoder data connectors at PCB or at the motor encoder, can cause the serial data to become unreliable. Refer to the Main Processor / Encoder Cable section.
4. Loose ground or high voltage power connectors will induce noise into the system.
   • electrical cabinet check for loose connection at all the ground and high voltage power terminals (vector drive, wye-delta contactors, transformer..etc).
   • pendant check for loose terminal connectors.
   • spindle head check for loose ground and motor power terminals.
5. The ferrite filters suppress high frequency noise produced by the amplifiers and vector drive, when servos are on. Make sure they are installed in:
   • Encoder data cables. Make sure there is a ferrite filter P/N 64 1252 installed in all the encoder data cables.
   • Axis motor power cables. Make sure there is a ferrite filter P/N 64-1252 installed in X, Y, Z axis motor power cables [1].
   • Spindle motor cables. Make sure there is a ferrite filter installed in the motor output of the vector drive.

     For a 40HP vector with 6 wire leads [1] use ferrite P/N 64-1254.

     For a 40HP vector with 3 wire leads [2] use ferrite P/N 64-1252.

     For a 20HP vector drive with 6 or 3 wire leads [3, 4] use ferrite P/N 64-1252.

6. Cable routing. Make sure that the encoder cable is separated from high power spindle/axis/pump cables.

Corrective Action:

Examine the connector [1] on the Maincon. Make sure it is not damaged.

Examine the cable. Look for signs of damage or stiffness. The connector [4] has two housings [2,3] for the cable pins.

If the pins have been pushed into the motor, you must replace the motor and cable together.

Make sure the cable is firmly connected at both ends. Reseat both connections. Make sure the cable is installed in the correct connector at the Maincon or MOCON PCB.

Look for signs of damage and stiffness on the cable and connector. Disconnect the power cable from the amplifier and motor. Measure the resistance from leg to leg (red, white, black wires), and from leg to ground (green/yellow wire). Make sure the measurements result in an open connection. Refer to the table below as a reference. 

NOTE: If the machine is experiencing intermittent short circuit alarms move the axis to the location where the cable would be most bent before performing this test. This may improve the likeliness of finding an intermittent  short.

Perform a continuity test between the ground wire and the braided shield. If it fails the continuity test fails the cable shield is compromised. 

NOTE: If the machine is experiencing intermittent short circuit alarms move the axis to the location where the cable would be most bent before performing this test. This may improve the likeliness of finding an intermittent  short.

Check each leg from one end of the cable to the corresponding leg on the other end of the cable for continuity. Refer to the table above for wiring reference. If there is an open connection, there is a problem with the cable. 

NOTE: If the machine is experiencing intermittent short circuit alarms move the axis to the location where the cable would be most bent before performing this test. This may improve the likeliness of finding an intermittent  short.

Use the following troubleshooting chart to determine whether the motor, amp, or cable is defective.

When Alarm 993 SHORT CIRCUIT occurs disconnect the axis power cable from the motor. Press [RESET] and jog the axis.

If Alarm 103 AXIS SERVO ERROR TOO LARGE occurs then the motor is defective. If another Alarm 993 SHORT CIRCUIT occurs then the cable or amp is defective.

To determine if the cable or amp is defective disconnect the axis power cable from the motor and amp. Press [RESET] and jog the axis.

If Alarm 993 SHORT CIRCUIT generates then the amplifier is defective. If Alarm 103 AXIS SERVO ERROR TOO LARGE generates the cable is defective. 

Corrective Action:

Disconnect and inspect the power cable at the motor side. Verify the motor connectors are not contaminated, coolant contamination can generate drive fault alarms and damage the amplifier. Verify that the cable is connected to the corresponding amplifier as well. 

For VMC machines, new servo motor cables can be ordered to mitigate coolant intrusion. See HBC-N 03-13-25.

Measure the resistance from the pins Labeled A, B, and C at the motor connector to the chassis ground.

• The reading must show an open circuit 
• If the reading does not show an open circuit, the motor is at fault

Conduct a continuity test from the ground pin and chassis ground. The multimeter should beep or read less than 1 ohm resistance for continuity, otherwise then there is a short in the motor. Measure the resistance between the pins labeled A, B and C, refer to the table below for the resistance values.

NOTE: Nominal winding resistance has been added to the table for the 4-wire test method, when using a multimeter use the typical resistance value column for the expected values.

DC-1 30 Taper - Tool Carousel Motor without Brake

Important: Machines built before 3/1/2025 will have the motor without the brake.

The DC-1 tool carousel motor is a sigma7 size 04 motor. The pinout for the phases looks different than other axis motors.

This image shows the pins on the motor connector:

1. Gnd
2. Phase A 
3. Phase B 
4. Phase C

NOTE: The Gnd pin [1] should be longer than the other pins as shown in the image.

NOTE: Nominal winding resistance has been added to the table for the 4-wire test method, when using a multimeter use the typical resistance value column for the expected values.

Corrective Action:

Reseat the the connection for connectors P3, P4, or P5 on the I/O PCB.

Measure the voltage across the red and black cables.

Press [EMERGENCY STOP]. There should be no voltage.

Press [RESET] to clear the alarms. The voltage should be between 20-30 VDC.

Examine the connection at the motor's brake [2] and power connectors [3] for contamination. Reseat the connections.

If no voltage is present, refer to:

• Next Generation Control - I/O PCB -Troubleshooting Guide