Machine Alarms
73 entries in this category — Page 2 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 405: Injection Pressure Limit Exceeded — Troubleshooting Guide
Severity: High (Cycle Interrupt) · Hydraulic System / Injection Unit
Netstal Alarm 405 triggers when the hydraulic injection pressure exceeds the programmed maximum limit during the injection or hold-pressure phase....
View Details →Arburg Error 290: Nozzle Temperature Deviation Beyond Tolerance — Selogica Troubleshooting
Severity: Critical (Interlock — Prevents Screw Rotation) · Nozzle Heater Band / Thermocouple / SSR
Arburg Error 290 is a critical interlock alarm on the Selogica control system that prevents screw rotation when the nozzle temperature deviates...
View Details →Engel Alarm 510: Clamp Force Below Minimum — Mold Protection & Safety Interlock
Severity: Critical (Machine Stop — Mold Safety) · Clamping Unit / Hydraulic System
Engel Alarm 510 triggers when the measured clamping force (calculated from hydraulic pressure in the clamp cylinder × cylinder area, or measured...
View Details →Sumitomo Demag E220: Ejector Forward Timeout — Hydraulic vs Electric Ejector Diagnostics
Severity: Medium (Cycle Interrupt) · Ejector System (Hydraulic or Electric Servo)
Sumitomo Demag Alarm E220 triggers when the ejector plate fails to reach the programmed forward position within the timeout period. This alarm...
View Details →KraussMaffei MC45: Screw Speed Overload — Plasticizing Unit Diagnostics
Severity: High (Cycle Interrupt) · Screw Drive Motor / Hydraulic Motor
KraussMaffei Alarm MC45 indicates the screw drive motor (electric servo or hydraulic motor, depending on machine series) has exceeded its maximum...
View Details →Wittmann Battenfeld B6: Barrel Zone 3 Temperature Deviation — Heater Band & Thermocouple Diagnostics
Severity: High (Prevents Injection) · Barrel Heater Band / Thermocouple / SSR (Zone 3 — Metering Zone)
Wittmann Battenfeld Alarm B6 specifically identifies Zone 3 (metering zone — the final barrel zone before the nozzle) as having a temperature...
View Details →Fanuc Roboshot SV0436: Servo Motor Overload — Injection Axis Diagnostics
Severity: Critical (Soft Thermal Trip — Servo Motor Protection) · Injection Axis Servo Motor / Servo Amplifier
Fanuc Roboshot Alarm SV0436 is a soft thermal overload (software thermal — the servo amplifier calculates motor winding temperature from current...
View Details →Haitian H101: Mold Close Safety Timeout — Safety Gate & Proximity Switch Diagnostics
Severity: Critical (Safety Interlock) · Safety Gate Switches / Mold Close Proximity Sensors
Haitian Alarm H101 triggers when the mold close sequence exceeds the programmed timeout period without the controller receiving confirmation that...
View Details →Toshiba EC 8502 Alarm: Injection Pressure Limit Exceeded — Troubleshooting
Severity: High (Cycle Stop) · Injection Unit / Pressure Transducer
Toshiba EC 8502 triggers when the injection pressure measured at the nozzle tip transducer exceeds the set limit value for more than 0.5 seconds....
View Details →Nissei E-20 Alarm: Mold Clamp Force Low — Troubleshooting Guide
Severity: High (Cycle Stop) · Clamp Unit / Hydraulic System
Nissei E-20 alarm indicates that the measured clamp force during mold closure is below the set minimum threshold. Nissei's hybrid clamp system...
View Details →JSW J-AD 305 Alarm: Ejector System Overload — Diagnosis & Repair
Severity: High (Ejector Stop) · Ejector Hydraulic Cylinder / Ejector Plate
JSW J-AD 305 triggers when the ejector hydraulic cylinder's pressure transducer detects resistance exceeding the set limit during the forward...
View Details →Demag D-150 Alarm: Injection Time Exceeded — Troubleshooting
Severity: Medium (Cycle Abort) · Injection Unit / Screw & Barrel
Sumitomo Demag D-150 alarm indicates that the injection time — the time from injection start to reaching the switchover point (typically by screw...
View Details →Wittmann Battenfeld B8: Barrel Zone 3 Temperature Deviation — Fix
Severity: Medium (Cycle Pause) · Barrel Heating Zone 3 / Thermocouple
Wittmann Battenfeld B8 alarm indicates that barrel zone 3 (the metering zone, closest to the nozzle) has deviated from the set temperature by more...
View Details →Husky H-401: Hot Runner Manifold Temperature Deviation — PET Preform Guide
Severity: Critical (System Stop) · Hot Runner Manifold / Heater Zones
Husky H-401 is specific to PET preform molding systems and indicates that one or more hot runner manifold zones have deviated from setpoint beyond...
View Details →Sumitomo SHI 610: Nozzle Contact Force Loss — Alarm & Fix
Severity: High (Cycle Stop) · Injection Carriage / Nozzle Touch
Sumitomo SHI 610 alarm triggers when the nozzle contact force sensor detects loss of contact between the machine nozzle and the mold sprue bushing...
View Details →Toyo T-205 Servo Drive Overcurrent Alarm: Diagnosis
Severity: Critical (Emergency Stop) · Servo Drive Amplifier / Motor
Toyo T-205 is a servo drive overcurrent alarm — the servo amplifier has detected current exceeding the safe operating limit in one of the...
View Details →Netstal Alarm 201: Screw Speed Deviation During Recovery
Severity: Medium (Cycle Alarm) · Screw Drive Motor / Encoder
Netstal 201: actual screw speed deviates >±10% from setpoint during plasticating. Causes: worn screw/barrel clearance, material bridging in feed...
View Details →Arburg Alarm 330: Nozzle Guard Open Safety Interlock
Severity: High (Safety Stop) · Nozzle Guard / Safety Switch
Arburg 330: nozzle guard detected open during injection. Category 3 safety per ISO 13849. NEVER bypass — risk of severe burn from molten plastic...
View Details →Engel Alarm 601: Cavity Pressure Sensor Signal Failure
Severity: Medium (Quality Alarm) · Cavity Pressure Sensor / Charge Amp
Engel 601: cavity pressure sensor (Kistler/RJG) not providing valid signal. Causes: cable damage from mold cycles, sensor overload, connector...
View Details →Fanuc Roboshot SV0601: DC Link Overvoltage During Deceleration
Severity: High (Emergency Stop) · Servo Amplifier DC Link
Fanuc SV0601: DC link voltage >400V during rapid deceleration. Regenerative energy exceeds discharge resistor capacity. Reduce deceleration rate...
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