Machine Alarms
73 entries in this category — Page 3 of 4
Injection molding machine alarm codes and diagnostic guides for Netstal, Arburg, Engel, Sumitomo Demag, KraussMaffei, Wittmann Battenfeld, Fanuc Roboshot, Haitian, Milacron, and other precision molding equipment. Each alarm entry provides: error code definition, root cause analysis, step-by-step troubleshooting procedures, cross-reference to equivalent alarms on other machine brands, and preventive maintenance recommendations. Essential for maintenance technicians, process engineers, and production managers reducing injection molding downtime.
Haitian Alarm H303: Nozzle Touch Force Insufficient
Severity: Medium (Cycle Alarm) · Carriage Cylinder / Pressure Sensor
Haitian H303: carriage cylinder pressure below threshold during injection. Risk of molten plastic leakage at nozzle-sprue interface. Correct...
View Details →Wittmann Battenfeld B15: Hydraulic Oil Filter Clogged
Severity: Low (Maintenance Warning) · Hydraulic Filter / DP Switch
Wittmann B15: differential pressure switch detects clogged return filter. Not a stop alarm but continued operation forces oil through bypass —...
View Details →Sumitomo Demag Alarm 505: Check Ring Leakage Detected
Severity: Medium (Quality Alarm) · Check Ring / Screw Tip
Sumitomo Demag 505: ActiveLock detects check ring leakage via pressure decay analysis. Causes: worn check ring seat, polymer residue preventing...
View Details →Negri Bossi Alarm E107: Mold Open Position Not Reached
Severity: High (Cycle Stop) · Clamp Position Sensor
Negri Bossi E107: mold open position not confirmed within timeout. Monitored by magnetostrictive linear transducer. Causes: obstruction (stuck...
View Details →KraussMaffei MC120: Back Pressure Control Deviation
Severity: Medium (Cycle Alarm) · Back Pressure Valve / Transducer
KraussMaffei MC120: actual back pressure deviates >15% from setpoint. Critical for melt homogeneity. Causes: proportional valve sticking,...
View Details →Engel Alarm 701: Barrel Zone Overtemperature Shutdown
Severity: Critical (Safety Shutdown) · Barrel Heater / SSR / Thermocouple
Barrel zone >20°C over max safe temperature. Risk of polymer degradation producing toxic gases. Primary cause: SSR shorted closed. Test SSR:...
View Details →Arburg Alarm 410: Nozzle Freeze-Off Detected
Severity: Medium (Cycle Alarm) · Nozzle Heater / Thermocouple
Nozzle temp dropped below minimum threshold. Risk of frozen nozzle blocking next shot. Verify nozzle heater resistance (40-80Ω for 300-500W at...
View Details →KraussMaffei MC150: Screw Recovery Timeout
Severity: Medium (Cycle Alarm) · Screw / Feed Throat / Hopper
Screw did not reach shot size within max recovery time. Check: hopper bridging, worn screw flight-to-barrel clearance, feed throat temp (should be...
View Details →Milacron M-600: Platen Parallelism Error
Severity: High (Quality + Protection) · Tie Bar Strain Gauges / Clamp
Strain gauge readings differ >15% across tie bars. Causes uneven clamp → flash on one side, tie bar fatigue. Check: mold thickness uniformity, tie...
View Details →Sumitomo Demag Alarm 700: Robot Interface Communication Loss
Severity: High (Automation Stop) · Euromap 67 Interface / Robot
EU67/SPI robot communication lost. Machine cannot confirm robot clear of mold. Check EU67 cable continuity, loose pins, and route comm cables...
View Details →Fanuc Roboshot Alarm SV0440: Servo Heatsink Overheating — Troubleshooting Guide
Severity: High (Machine Stop) · Servo Drive / Heatsink Fan
Fanuc Roboshot Alarm SV0440 triggers when the servo drive unit's heatsink temperature sensor detects a condition exceeding the safe operating...
View Details →Haitian Alarm H102: Hydraulic Oil Overheating — Diagnostics & Troubleshooting
Severity: Medium (Warning / Cycle Slowdown) · Hydraulic Oil Cooler / Temperature Sensor
Haitian Alarm H102 triggers when the hydraulic oil temperature exceeds 55°C on Mars and Jupiter series machines. Sustained operation above this...
View Details →Husky Alarm HY500: Nozzle Contact Force Failure — Troubleshooting
Severity: Critical (Interlock) · Nozzle Contact / Carriage Cylinder
Husky Alarm HY500 is a critical interlock alarm triggered on HyPET and Hylectric machines when the nozzle contact force sensor detects that the...
View Details →Toshiba Alarm EC552: Barrel Zone Overheating — Diagnostics & SSR Troubleshooting
Severity: High (Machine Stop) · SSR / Heater Band / Thermocouple
Toshiba Alarm EC552 on EC-SX and EC-NX series machines triggers when the Injectvisor V70 controller detects a barrel heating zone temperature...
View Details →Nissei Alarm E230: Clamp Force Sensor Malfunction — Diagnostics
Severity: High (Cycle Interruption) · Clamp Force Load Cell / Strain Gauge
Nissei Alarm E230 on FV and FVX series hybrid machines triggers when the TACT controller detects an implausible reading from the clamp force...
View Details →JSW (Japan Steel Works) Alarm J310: Mold Protection Override — Critical Safety
Severity: Critical (Immediate Emergency Stop) · Mold Protection System / Linear Position Sensor
JSW (Japan Steel Works) Alarm J310 on J-ADS series machines is the most critical safety alarm — it triggers when the mold protection system...
View Details →Negri Bossi Alarm NB20: Screw Speed Deviation — Diagnostics & Troubleshooting
Severity: Medium (Cycle Delay / Warning) · Screw Drive Motor / Hydraulic Motor
Negri Bossi Alarm NB20 on Vector and EOS series machines triggers when the Amico controller detects that the actual screw speed during...
View Details →Generic Injection Molding Alarm: SSR Shorted in Heating Zone — All Brands
Severity: Critical (Fire Risk / Machine Damage) · Solid State Relay / Heater Band Circuit
A shorted SSR (Solid State Relay) is the most dangerous electrical fault in injection molding — it causes continuous, uncontrolled heating of the...
View Details →KraussMaffei Alarm MC48: Injection Pressure Transducer Failure — Troubleshooting
Severity: High (Process Stop) · Injection Pressure Transducer / Melt Pressure Sensor
KraussMaffei Alarm MC48 triggers when the MC6 controller detects an implausible signal from the injection pressure transducer — either a frozen...
View Details →Wittmann Battenfeld Alarm B10: Nozzle Temperature Deviation — Diagnostics
Severity: High (Cycle Stop) · Nozzle Heater Band / Nozzle Thermocouple
Wittmann Battenfeld Alarm B10 on EcoPower and MacroPower series machines triggers when the Unilog B8 controller detects that the nozzle zone...
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