Haas 801 Chip Conveyor Fault triggers when the NGC control detects a malfunction in the chip conveyor system, typically through conveyor motor feedback signals or limit switch inputs. This alarm protects the conveyor drive motor and prevents damage from mechanical obstructions or electrical faults in the conveyor circuit.
HaasSystemIntermediate15-30 minutes
801
Haas Alarm 801 - Chip Conveyor Error
Chip Conveyor Fault
This alarm indicates the chip conveyor system has encountered a fault condition such as overload, jam, or the conveyor motor protection relay has tripped. The IOCON monitors the chip conveyor motor circuit and associated safety devices, and will trigger this alarm when abnormal operating conditions are detected. The conveyor will shut down to prevent motor damage or mechanical failure.
Root Cause Summary
Haas 801 Chip Conveyor Fault triggers when the NGC control detects a malfunction in the chip conveyor system, typically through conveyor motor feedback signals or limit switch inputs. This alarm protects the conveyor drive motor and prevents damage from mechanical obstructions or electrical faults in the conveyor circuit.
Safety
Chips may accumulate
Causes and Fixes
1
Check Conveyor for Physical Obstructions
Inspect the entire conveyor path for tangled chips, foreign objects, or accumulated debris blocking the conveyor belt or auger mechanism.
Ensure machine is in E-STOP and power is locked out before manual inspection
2
Test Manual Conveyor Operation
Navigate to SETTING 84 (CHIP CONVEYOR) and attempt manual conveyor operation to verify motor response and listen for unusual noises.
Normal conveyor operation should be smooth and quiet - grinding or clicking indicates mechanical issues
3
Inspect Conveyor Drive Components
Check conveyor drive belt tension, sprockets, and motor coupling for wear or damage that could cause binding or excessive load.
Proper belt tension allows 1/2 inch deflection with moderate finger pressure
4
Clear Obstruction and Reset
Remove any found obstructions, manually rotate conveyor to verify free movement, then press RESET to clear the alarm.
Do not force conveyor movement - investigate further if resistance is felt
1
Check Conveyor Cover Position
Verify all conveyor access covers are properly closed and latched, as open covers will trigger limit switches and fault the system.
Some Haas models require specific cover closing sequence - check your machine manual
2
Inspect Limit Switch Operation
Navigate to DIAGNOSTICS > INPUTS and observe limit switch states while manually actuating conveyor covers and components.
Limit switch inputs should change state cleanly when actuated - intermittent signals indicate switch problems
3
Clean and Adjust Limit Switches
Clean limit switch actuators and mounting areas of chips and coolant buildup, then adjust switch position for proper actuation.
Use only approved cleaners - avoid petroleum-based solvents on switch components
4
Test Switch Continuity
With power off, use multimeter to verify limit switch continuity and proper operation through full actuation range.
Replace switches showing intermittent continuity or requiring excessive actuation force
1
Check Conveyor Motor Connections
Inspect all electrical connections at the conveyor motor, junction boxes, and control cabinet for loose, corroded, or damaged connections.
Verify lockout/tagout procedures before accessing electrical connections
2
Test Motor Contactor Operation
Navigate to DIAGNOSTICS > OUTPUTS and manually activate conveyor output while listening for contactor engagement in the electrical cabinet.
Healthy contactors produce a distinct 'click' when energizing - weak or absent sounds indicate contactor problems
3
Measure Motor Circuit Voltages
With conveyor activated, measure voltage at motor terminals to verify proper supply voltage and phase balance.
Voltage should be within 10% of nameplate rating with less than 2% imbalance between phases
4
Check Motor Overload Settings
Verify motor overload relay settings match conveyor motor nameplate amperage and are not tripped or incorrectly adjusted.
Never increase overload settings beyond motor nameplate values
1
Check Interface Module Connections
Inspect all cable connections between the NGC control and conveyor interface module for secure seating and proper pin contact.
Gently wiggle connectors while observing alarm status - intermittent alarms indicate connection problems
2
Verify Interface Module Power
Check that the conveyor interface module has proper DC power supply and all status LEDs indicate normal operation.
Use only Haas-approved replacement modules to ensure compatibility
3
Reset Communication Link
Power cycle the NGC control to reset communication links, then navigate to SETTING 84 to verify conveyor control response.
Allow 30 seconds between power off and restart for complete system reset
4
Update Control Software
Verify NGC control software is current version and check for any conveyor-related software updates or patches.
Document current software version before any updates for rollback capability
1
Verify Conveyor Enable Parameters
Check SETTING 84 (CHIP CONVEYOR) and related parameters to ensure conveyor is properly enabled and configured for your machine model.
Factory default settings are usually optimal - document changes before making adjustments
2
Review Conveyor Timing Settings
Verify conveyor start delay and run time parameters match your application requirements and are within acceptable ranges.
Excessive conveyor run times can cause premature motor wear
3
Check Interlock Parameters
Ensure conveyor interlock settings properly coordinate with door locks, coolant system, and spindle operation per machine configuration.
Conveyor interlocks prevent operation conflicts - disable only for troubleshooting purposes
4
Restore Factory Defaults
If parameter corruption is suspected, restore conveyor-related parameters to factory defaults and reconfigure as needed.
Document all custom parameter settings before restoring defaults
