Overview
The Robotron 503-7-0324-01 is a steering module designed for the Series 400 cascade control system. This module manages SCR (silicon-controlled rectifier) firing sequences in resistive weld controllers, making it essential for tube welding and seam welding applications. The Series 400 is a self-contained, microprocessor-based control platform that coordinates multi-phase welding power delivery with high precision.
Key Features
- Single-phase SCR addressing—controls contactors on the same phase only
- Cascade mode operation with delayed firing and automatic cycle control
- Jumper-selectable group numbering for multi-module systems
- Integrated contactor selection and sequencing via instruction code #51
- Compatible with standard Series 400 backplane and power supply modules
Technical Specifications
- Manufacturer: Robotron
- Part Number: 503-7-0324-01
- Module Type: Cascade Steering Module
- Application: Resistive Weld Control (tube, seam welding)
- Phase Configuration: Single Phase
- SCR Control: Same-phase addressing only
- Mounting: Series 400 card slot (Slot 15 typical)
Typical Applications
- Tube welding and seam welding systems
- Multi-contactor sequencing in industrial welders
- AC power delivery control for resistive heating
- Automotive and sheet metal fabrication automation
- Equipment retrofit and legacy system upgrades
Compatibility & Replacements
Compatible With
- Robotron Series 400 controller platform
- Series 400 power supply modules (343-0-0142-00, 343-0-0145-00)
- Standard 19-inch industrial backplane systems
- Resistive weld controllers and AC power delivery systems
Replaces / Drop-In Replacement For
- Original equipment Series 400 cascade modules in same-phase applications
- Legacy Robotron weld control steering cards
- Note: The 503-7-0324-02 variant addresses multi-phase SCRs; verify your power configuration before ordering
Works With
- Series 400 system I/O modules
- Robotron teach pendant and control interface
- Standard AC contactor and SCR contactors
- Microprocessor-based Series 400 control logic
