Reliance 0-57400-A AutoMax 115V AC/DC Input Module

Short Description: Reliance 0-57400-A is a 16-point 115V AC/DC digital input module for Reliance AutoMax PLC distributed control system. This legacy rack slot module reads high-voltage field contact signals and converts them into logic signals for the AutoMax processor. The suffix -A indicates hardware revision A. It is discontinued original production hardware, widely used as spare replacement for existing AutoMax automation racks.

Product Functions

• 16 isolated input channels for 115VAC / 115VDC field signal detection
• Convert high voltage contact signals to 5V logic for AutoMax backplane bus
• Onboard surge suppression and input filtering for harsh industrial cabinet environments
• LED status indicators per channel for local signal diagnostic visualization
• Direct slot mounting into AutoMax PLC rack, communicate via backplane bus
• Designed to receive limit switch, relay contact and field device status feedback
• Support hot insertion/removal under proper safety lockout-tagout procedure

Application Scenarios

• Reliance AutoMax PLC distributed control racks
• Metal rolling mills, paper machines and heavy manufacturing production lines
• Conveyor systems, material handling and press machine automation control
• Legacy plant DCS maintenance, spare inventory and retrofit projects
• Industrial machine safety interlock and field contact status acquisition
• Existing Reliance AutoMax installation emergency spare replacement

FAQ