Machine Alarms
73 entries in this category — Page 1 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.
Netstal Alarm 102: Heating Zone Temperature Out of Range - Troubleshooting Guide
Severity: High (Machine Stop) · Heating Band / Thermocouple
Netstal Alarm 102 occurs when the actual temperature of a specific heating band in the injection barrel deviates from the set-point by more than...
View Details →Arburg Error 320: Barrel Heating Control Failure - Troubleshooting Guide
Severity: Critical (Interlock) · Solid State Relay / Heating Circuit
Arburg Error 320 is a critical interlock alarm triggered when the Selogica controller detects no current flow to one or more heating zones despite...
View Details →Engel Alarm 405: Screw Recovery Time Exceeded - Diagnostics & Fix
Severity: Medium (Cycle Delay / Warning) · Screw Drive Motor / Hydraulic Pump
Engel Alarm 405 is generated by the CC300 controller when the screw recovery (plastication) time exceeds the maximum time set in the injection...
View Details →Netstal Alarm 301: Mold Protection Force Exceeded - Troubleshooting
Severity: Critical (Immediate Stop) · Mold Protection System / Clamping Unit
Netstal Alarm 301 is one of the most critical safety alarms in injection molding—it triggers when the clamping unit detects resistance forces...
View Details →Sumitomo Demag Alarm 220: Clamp Force Not Reached - Diagnostics & Troubleshooting
Severity: High (Cycle Interruption) · Clamping Unit / Hydraulic System
Sumitomo Demag Alarm 220 triggers when the NC5 (or NC5 plus) controller detects that the actual clamping force measured at the tie-bar strain...
View Details →KraussMaffei Alarm MC45: Injection Pressure Limit Exceeded - Troubleshooting Guide
Severity: High (Process Deviation / Cycle Stop) · Injection Unit / Hydraulic System
KraussMaffei Alarm MC45 is generated by the MC6 controller (KM's latest-generation control platform) when the measured injection pressure exceeds...
View Details →Wittmann Battenfeld Alarm B6: Ejector Position Fault - Diagnostics & Troubleshooting
Severity: Medium (Cycle Hold / Warning) · Ejector System / Position Transducer
Wittmann Battenfeld Alarm B6 triggers on the Unilog B8 (or B6/B6P) controller when the ejector system fails to reach the commanded position—either...
View Details →Arburg Error 290: Screw Rotation Speed Deviation - Diagnostics & Fix
Severity: Medium (Warning / Process Deviation) · Screw Drive Motor / Encoder
Arburg Error 290 is triggered by the Selogica controller when the actual screw rotation speed (measured by the screw motor encoder) deviates from...
View Details →Engel Alarm 510: Hydraulic Oil Temperature High - Diagnostics & Cooling System Check
Severity: Medium (Warning / Potential Cycle Interruption) · Hydraulic Oil Cooling System
Engel Alarm 510 is generated by the CC300 controller when the hydraulic oil temperature exceeds the user-programmed warning threshold (typically...
View Details →Fanuc Roboshot Alarm SV0300: Servo Amplifier Overload - Troubleshooting Guide
Severity: Critical (Emergency Stop) · Servo Amplifier / Servo Motor
Fanuc Roboshot Alarm SV0300 is a Fanuc CNC-level servo alarm (not a machine-level PLC alarm) generated by the Fanuc αi series servo amplifier when...
View Details →Haitian Alarm H101: Mold Close Timeout - Diagnostics & Troubleshooting
Severity: Medium (Cycle Timeout / Stop) · Clamping Unit / Safety Gate Interlock
Haitian Alarm H101 triggers on the Techmation (or KEBA, on newer Haitian Mars and Zhafir series) controller when the mold closing sequence fails...
View Details →Milacron Alarm M-305: Hydraulic Pump Motor Overload - Diagnostics & Fix
Severity: Critical (Immediate Pump Stop) · Hydraulic Pump Motor / Motor Starter
Milacron Alarm M-305 is a critical motor protection alarm triggered by the Mosaic (or XTREME, on newer machines) controller when the hydraulic...
View Details →Netstal Alarm 301: Injection Pressure Exceeded — Troubleshooting Guide
Severity: High (Cycle Interrupt) · Injection Unit / Pressure Transducer
Alarm 301 on Netstal injection molding machines indicates that the actual injection pressure has exceeded the set maximum pressure limit during...
View Details →Engel Alarm 510: Mold Protection Overtravel — Complete Diagnostic Protocol
Severity: Critical (Machine Stop — Mold Damage Risk) · Clamping Unit / Linear Transducer
Engel Alarm 510 is a critical mold protection alarm. The clamping unit's linear position transducer has detected that the moving platen traveled...
View Details →Fanuc Roboshot SV0440: Servo Overload Alarm — Troubleshooting & Preventive Maintenance
Severity: High (Axis Stop — Overheat Risk) · Servo Amplifier / Motor
Fanuc Roboshot SV0440 is a servo overload alarm indicating that the servo amplifier has detected a sustained current draw exceeding its rated...
View Details →KraussMaffei MC100: Hydraulic System Pressure Failure — Emergency Diagnostics
Severity: Critical (Machine Stop — Hydraulic Failure) · Hydraulic Pump / Pressure Relief Valve / Accumulator
KraussMaffei MC100 indicates that the main hydraulic system pressure has fallen below the minimum setpoint required for safe machine operation....
View Details →Wittmann Battenfeld Alarm B12: Temperature Deviation Zone 3 — Diagnostic Guide
Severity: High (Quality Risk — Part Inconsistency) · Barrel Heater Band / Thermocouple Zone 3
Wittmann Battenfeld Alarm B12 indicates a temperature deviation exceeding ±5°C in barrel zone 3 (metering zone). This is a quality-critical alarm...
View Details →Sumitomo Demag Alarm 350: Clamp Force Deviation — Complete Troubleshooting
Severity: Critical (Mold Protection — Immediate Stop) · Clamp Force Transducer / Tie Bar Strain Gauge
Sumitomo Demag Alarm 350 indicates that the measured clamp force deviates from the setpoint by more than the safety margin (±8% on most SD...
View Details →Milacron Alarm M-450: Injection Unit Overload — Root Cause & Repair Guide
Severity: High (Cycle Interrupt — Injection Unit Stop) · Injection Motor / Hydraulic Pump Overload
Milacron M-450 is an injection unit overload alarm indicating the injection motor (electric machines) or hydraulic pump (hydraulic machines) has...
View Details →Mold Sticking & Ejector Pin Marks: Injection Molding Troubleshooting Guide
Severity: High (Production-Stopping Defect) ·
Parts sticking in the mold cavity or ejector pin marks marring finished surfaces are among the most common and costly injection molding defects....
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