Why Retrofit your Minijector Machine?
Maximize your equipment ROI with Minijector retrofit services that replace obsolete components with modern Siemens PLC and HMI controls. Our engineering team specializes in injection molding machine modernization, transforming legacy Model 55, 55E, and 70 units into high-precision, data-driven production assets.
Cost Efficiency
Extend machine life without the capital expense of new hardware.
Modernize Control
Upgrade to high-resolution Siemens HMIs and PLCs
Date & Recipes
Save and load mold setups instantly (no more manual pot adjustments).
Serviceability
Replace obsolete components with off-the-shelf, modern parts
Model-Specific Retrofit Solutions: Upgrades for Minijector 55, 55E, and 70
Upgrade your production floor and increase the longevity of your machine with our model-specific retrofits. Our experienced team is capable of restoring Minijector machines of 20+ years—restoring precision, adding new recipe management, and eliminating the risk of obsolete hardware.
Key Retrofit Upgrades
- Enhanced Interface: Upgrades the legacy 3-color 8.4″ interface to a new 9″ KP Comfort Panel with multicolor display.
- Superior Safety: Incorporates two-hand start controls and updated guarding to ensure significantly better operator safety.
- Pressure Monitoring: Features a new pressure switch that delivers better system pressure feedback than old analog gauges.
- Program Security: Replaces Mitsubishi battery-backed systems with Siemens hardware to eliminate the risk of program loss.
Key Retrofit Upgrades
- Modernized Servos: Installs new Siemens S210 Servos featuring a single cable design to replace older multi-cable versions.
- High-End Processing: Replaces legacy controllers with a Siemens S7-1500 CPU for more powerful machine logic and data handling.
- Expanded Recipe Storage: Increases internal recipe storage capacity and adds support for expandable SIMATIC memory cards
- Responsive Display: Replaces the current 8.4″ screen with a 12″ Multicolor Comfort Panel that is 50% larger for better visibility.
Key Retrofit Upgrades
- Advanced Control: Replace legacy relay logic with a Siemens S7-1200 PLC for faster cycle times.
- Touchscreen Interface: The Model 70 upgrade replaces the current 8.4″ interface with a 12″ Multicolor Comfort Panel.
- Precision Pressure: New proportional relief valves and transducers provide superior system feedback and control.
- Data Protection: Eliminates battery backups to prevent total loss of machine programming and critical data.
The Electro-Matic Advantage
Siemens Specialists
As a top Siemens distributor, Electro-Matic provides specialists focused entirely on Siemens products and software
Decades of Minijector Expertise
Our dedicated support teams bring over 100 years of combined electrical and automation control experience
National Reach
With local support across Michigan, Ohio, Tennessee, and Florida, we provide technical assistance wherever your facility is located
Minijector Retrofit Frequently Asked Questions
How long does a typical retrofit installation take?
The standard installation timeframe for these upgrade packages is one week.
What components are replaced during the upgrade?
The process involves replacing legacy controllers with modern Siemens S7-1200 or S7-1500 PLCs, upgrading the touchscreen interface, and updating obsolete valves or switches as required.
Can we still save our existing mold configurations?
Yes, the upgrade increases recipe storage capacity and allows for data logging via a SIMATIC Memory Card.
Will I lose my current machine logic if the battery fails?
No, the new Siemens system eliminates the need for battery backups, which prevents the total loss of programming and data common in older Mitsubishi systems.
What kind of technical support is available after the install?
Electro-Matic provides access to dedicated support teams with over 100 years of combined electrical and automation control experience.