The ROPEX Resistron RES-402 controller utilizes microprocessor technology for sensorless, closed-loop control of impulse heating elements. The ROPEX RES-402 is designed for simple plug-in system integration.
Category: ROPEX | Impulse sealing experts
Specifications
SKU
2006100044
Details
The Ropex RES-402/400VAC is a specialized microprocessor-based Resistron temperature controller designed for sensorless, closed-loop impulse heat-sealing of plastics and packaging film. By executing a rapid measurement cycle up to 60 times per second, it monitors changes in the electrical resistance of the heat-sealing band to accurately maintain temperatures without requiring a physical thermocouple.
Core Specifications
- Operating Voltage: 400 VAC
- Temperature Range: 0 to 300 °C
- Measurement Loop: Sensorless closed-loop feedback
- Analog Interface: 0–10 VDC electrically isolated input (setpoint) and output (actual temperature)
- Control Signals: 24 VDC isolated logic signals for START, AUTOCAL, and RESET functions
- Lifecycle Status: This specific unit has been discontinued by the manufacturer but remains available through global surplus, refurbishment, and repair providers.
Key Functional Features
- AUTOCAL: Automatic zero-point calibration at the press of a button to establish a baseline element resistance.
- AUTORANGE: Automatic configuration of the secondary voltage and current ranges to match the installed heating element.
- Electrical Isolation: Control electronics and 24 VDC logic signals are physically isolated from the high-voltage power electronics to ensure high noise immunity.
- Fault Diagnosis: Built-in alarm functionality to protect against open circuits, short circuits, or calibration errors.
Availability & Support
Because the RES-402 is an legacy model, industrial facilities typically manage it through secondary channels:
- Industrial Surplus: Fully tested refurbished units or unused old-stock parts can be acquired via distributors like GEASB.
- Component Repairs: Technical repair centers like GEASB offer standard (up to 10 days) and emergency (up to 3 days) component-level repairs paired with replacement warranties.
- Upgrades: Modern direct replacements can be selected by consulting the official ROPEX Product Lineup to transition to current-generation rail-mount or display controllers.
Are you looking to replace an existing unit, troubleshoot a specific error code/alarm, or find information on wiring/commissioning your RES-402?
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