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The zero return sequence follows as such:

1. Z-axis
2. X and Y Axis
3. C (5th), TC Arm, Carousel
4. B (4th)

WARNING: The zero return sequence will ignore safe zones, if there is a tool present in the tool holder it can crash on the sheet metal, table or double arm. 

If there is an obstacle above the B/C axis assembly, such as the tool changer double arm, when the machines is commanded to zero return all axes, the B/C axis assembly will collide the double arm because the Z-Axis is always zeroed first.

To avoid this collision press [Handle jog] when the Zero Return popup appears. This will temporarily enable Jog Without Zero Return. Jog the machine to a safe position, shown in Figure 1, and zero return all axes.

If a tool is in the spindle that is six inches or longer press [Handle jog] when the Zero Return Popup appears and jog the B axis to the vertical position before initiating the full zero return sequence.

The GM-2-5AX is equipped with safety edge sensors, located on the X-axis gantry.

The safety edge sensors are triggered by pressure from a collision with an obstacle.

When a safety edge sensor is triggered while the machine is running a program, the machine will feed hold and decelerate to a stop before the obstacle can be pushed by the gantry.

DANGER: The safety edge sensors are not active when the machine is in handle jog mode. If the X-axis gantry is handle jogged into an obstacle the collision will not be detected by the safety edge sensors.

When safe zones are active there are limitations to certain axis movements to prevent crashes from occuring. The message box "RESTRICTED ZONE REACHED" will appear any time a user reaches these limits. 

If this message box appears in an area it should not, please re-calibrate Safe Zones.

If this issue persists please contact the Haas Service department. 

GM-2-5AX software defines safe zones between the permanent elements of the machine.

Permanent elements of the machine include:

1. B/C-axis AssemblyTable
2. X-axis Gantry Assembly
3. Tool Changer

The following are not permanent elements of the machine:

1. Table Splash Guards
2. WIPS Tool Probe

The GM-2-5AX uses HSK63F tool holders. All tools must be balanced to 20,000 RPM. Refer to the maintenance section for correct tool holder maintenance.

CAUTION: Never operate the spindle without a tool holder. The machine will generate Alarm 973 - FIXTURE CLAMP FAILURE.

CAUTION: Never leave a dirty or hot tool holder in the spindle overnight. This can cause the mating surfaces between the tool holder and the spindle to stick. Put a clean tool holder in the spindle at the end of the work day. The tool holder must be at room temperature, or it must be the HSK 63F Protective cone supplied by HSD.

Press [MDI] and type [T] and the number of the tool you want to load. Press [ATC FWD] .

The second home feature can be used to quickly put the spindle into position to load tools.

To set the second home position jog the machine to the position shown in the figure below. Press [settings] and navigate to the User Positions tab. Select Second Home Position and press [F2] on each axis second home position setting.

Press the [Second home button] on the side a the pendant to send the spindle to the tool load position.

CAUTION: Second Home can crash the machine if there is an obstruction between the current spindle position and the second home position.

With the tool in your hand press and hold the [tool release] button located on the Z-Axis cover or pendant. Insert the tool into the spindle and release the [tool release] button.

CAUTION: Make sure the tool is fully seated into the spindle so that the face of the tool holder mates flush with the spindle face. If the spindle clamps the tool holder prematurely there will be a gap between face of the tool holder and the spindle face. The spindle will not rotate, but a tool change can be commanded which will cause a tool change failure or the tool to be dropped.

Cycle the tool into the tool changer and repeat this process until all the tools necessary for your application are loaded.

The Vector Jog feature allows the operator to jog the machine along the vector of the current spindle orientation. Vector jogging can be used at any time. It is especially useful for recovering a tool if the machine loses power while machining a part.

To recover a tool after power loss during machining press [power up] . The Zero Return popup will appear.

Type VJ and press [HANDLE JOG] . Jogging in the positive direction will move the tool away from the part along the current spindle vector. Jogging in the negative direction will move the tool towards the part along the current spindle vector.

The Tap Recovery feature will automatically make use of vector jogging to recover taps form non vertical holes.

The Wireless Intuitive Probing System (WIPS) comes standard with the GM-2-5AX. This system is used to set work and tool offsets and also includes special probe routines specific to the GM-2-5AX. These special probe routines use the calibration sphere assembly.

To probe work and tool offsets using WIPS the B and C axes must both be at zero.

If a WIPS tool or work offset probing routine is run while the B and C axes are not at zero Alarm 1005/1006 JOG TO A SAFE PLACE AND ZERO B/C AXIS will be generated.