1-15-96 96-8100
HAAS AUTOMATION, INC.
27
TABLE OF CONTENTS
ALARMS
SERVICE
MANUAL
VF-SERIES
138 A Motor Over Heat same as 135.
139 X Motor Z Fault Encoder marker pulse count failure. This alarm usually indicates that the encoder has been
damaged and encoder position data is unreliable. This can also be caused by loose connec
tors at P1-P4.
140 Y Motor Z Fault same as 139.
141 Z Motor Z Fault same as 139.
142 A Motor Z Fault same as 139.
143 Spindle Not Locked Shot pin not fully engaged when a tool change operation is being performed.
Check air pressure and solenoid circuit breaker CB4. This can also be caused by a fault in the
sense switch that detects the position of the lock pin.
144 Time-out- Time allocated for use prior to payment exceeded. Call your dealer.
Call Your Dealer
145 X Limit Switch Axis hit limit switch or switch disconnected. This is not normally possibleas the stored stroke
limits will stop the slides before they hit the limit switches. Check the wiring to the limit switches
and connector P5 at the side of the main cabinet. Can also be caused by a loose encoder shaft
at the back of the motor or coupling of motor to the screw.
146 Y Limit Switch same as 145
147 Z Limit Switch same as 145
148 A Limit Switch Normally disabled for rotary axis.
149 Spindle Turning Spindle not at zero speed for tool change. A signal from the spindle drive indicating that the
spindle drive is stopped is not present while a tool change operation is going on.
150 Z and Tool Tool changer not at home and Z is not either at machine home or above. If RESET,
Interlocked E-STOP, or POWER OFF occurs during tool change, Z-axis motion and tool changer
motion may not be safe. Check the position of the tool changer and remove the tool
if possible. Re-initialize with the AUTO ALL AXES button but be sure that the pocket
facing the spindle afterwards does not contain a tool.
151 Low Thru Spindle For machines with Through the Spindle Coolant only. This alarm will shut off the
Coolant spindle, feed, and pump all at once. Check for low coolant tank level, any filter or
intake strainer clogging, or for any kinked or clogged coolant lines.
152 Self Test Fail Control has detected an electronics fault. All motors and solenoids are shut down. This is most
likely caused by a fault of the processor board stack at the top left of the control. Call your
dealer.
153 X-axis Z Broken wires or encoder contamination. All servos are turned off. This
Ch Missing can also be caused by loose connectors at P1-P4.
154 Y-axis Z same as 153.
Ch Missing
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