Milacron Elektron 400/500/600 Full Electric Injection Molding Machine On site Maintenance and Troubleshooting Complete Guide

Fault 2: Severe temperature fluctuations (above ± 10 ℃)

Reason: Improper PID parameters; The power of the heating belt is too high; The thermocouple insertion depth is insufficient.

handle:

Enter the advanced temperature control menu, execute "PID adaptive", and let the system automatically tune.

Check if the thermocouple tip is in contact with the metal casing of the heating strip (which may cause ground circuit interference).

Ensure that the heating belt fastening strap is not loose and that the heat conduction is good.

6.3 Heating Belt Replacement Guide

When the original heating belt is discontinued, it is necessary to choose a substitute with the same or slightly smaller size, voltage, and power (the power cannot exceed 15% of the original value, otherwise it may burn out the SSR). During installation:

Clean the surface of the material cylinder and apply thermal conductive silicone grease.

The heating belt joint should face downwards or sideways to avoid liquid dripping in.

After re tightening, use an infrared thermal imaging device to check the surface temperature uniformity.

Chapter 7: Top out System and Automation Interface

7.1 Top out design

Elektron adopts central ejection (SPI ejection hole standard), driven by servo motors for ball screws and synchronous belts. The ejection speed, force, and ejection times can all be set on the screen. The maximum ejection stroke is 150 mm (depending on the model).

7.2 Common Problems

Squeezing or crawling:

Check the tension of the synchronous belt (as before).

Apply special lubricating grease (Kl ü berplex GE 11-462) to the ejector screw.

If the guide copper sleeve of the ejector plate is worn, it needs to be replaced (can be ordered from Milacron).

Improper ejection or excessive travel:

Re calibrate the ejection zero point: manually retract the ejection plate to the mechanical stop position and press the "zero point setting".

Check the encoder connection.

Attention: Exceeding the stroke may damage the mold ejector pin plate, so be careful.

Chapter 8 Preventive Maintenance Plan

Based on the design characteristics of Elektron, the following maintenance cycle is recommended:

Periodic maintenance project notes

Clean the feeding area daily, check the heating strip indicator light, observe the oil level in the grease tank, and use a non-metallic scraper

Clean the fan filter (electrical control cabinet) weekly, check for visible cracks on the synchronous belt, and maintain positive pressure in the electrical control cabinet

Check the tightening marks of each axis bolt (injection seat, locking rod nut) and torque according to the instruction manual every month

Clean the servo motor cooling fan quarterly and measure the insulation resistance (≥ 10M Ω) with a 500V megohmmeter to ground

Replace the lubricating grease distributor filter element every six months, check the Powerlink network cable crystal head, and use original spare parts

Annual recalibration of locking force and zero point calibration of injection load sensors require specialized weights or pressure sensors

Check the wear of the screw and check ring every 2000 hours, and replace the synchronous belt according to the actual situation, which can be extended to 4000 hours

Chapter 9: Replacement Strategy for Discontinued Spare Parts

Some early models of spare parts in the Elektron series, such as B&R PLC modules, specific model servo drives, and older touch screens, may have been discontinued. The following are practical and feasible replacement options:

9.1 Control system spare parts

Touch screen: The original 15 inch B&R Power Panel PP420 or PP450 has been EOL and can be upgraded to the PP700 or PP800 series, but the operating system image and HMI project files need to be updated. Suggest contacting Milacron to obtain the migration toolkit.

I/O modules: X20 series modules are still in mass production and have good compatibility. If the original 16 input module is damaged, it can be replaced with X20DI9371 (with slight wiring changes required).

Powerlink network card: It is recommended to replace it with the latest POWERLINK V2.0 compatible card and match it with the drive firmware.

9.2 Servo motors and drivers

If the original motor model (such as B&R 8LSA or 8LVA) is discontinued, the B&R 8LSE series can be used as a replacement, but it should be noted that:

Flange size and inertia matching.

The encoder type must be consistent (e.g. both are EnDat 2.1).

After replacement, the motor automatic recognition program and gain optimization must be executed.

9.3 Mechanical spare parts

Ball screw: supplied by Rexroth, THK or NSK. Users can measure the diameter, lead, and end machining dimensions of the original screw and place orders with professional screw manufacturers without relying on Milacron's original factory.

Synchronous belt: The brands are mostly ContiTech or Optibelt. You can purchase them separately by reading the surface model of the belt (such as AT10-810-25).

Linear guide rail: usually HIWIN or THK, purchase standard parts after measuring the slider size.

Key reminder: After installing all replacement mechanical parts, it is necessary to perform mechanical zero calibration and software limit settings for each axis again, otherwise collisions may occur.