Siemens 6ES7408‑1TA01‑0XA0

Product Name: SIMATIC S7‑400 PS408‑10A Power Supply Module Product Description: Rack power‑supply module for Siemens S7‑400 PLC. Converts mains voltage into stabilized 5 VDC and 24 VDC backplane bus power, supplies power for S7‑400 CPU, signal modules and communication modules in large‑scale PLC system.

Category:
Description

Technical Specifications:

  • Input Voltage: 120 / 230 VAC universal mains input
  • Rated Back‑bus Output Current: 10 A
  • Output Rail: 5 VDC logic power, 24 VDC auxiliary output
  • Installation Slot: Slot 1 of S7‑400 UR‑type rack
  • Operating Temperature: 0 °C to +60 °C cabinet‑mount
  • Storage Temperature: −40 °C to +85 °C
  • Protection Class: IP20, cabinet‑installation only Functional Features:
  • Universal wide‑range AC mains input
  • Hardware protection against over‑current, short‑circuit and over‑voltage
  • Transmit rack power diagnostic signal to S7‑400 CPU via backplane
  • Built‑in power‑on inrush‑current limiting circuit
  • Front‑panel LED for mains input, output voltage and fault indication
  • Support STEP 7 software system diagnostic function Application Scenarios:
  • Large‑scale S7‑400 PLC automation rack
  • Metallurgical plant automation control system
  • Power station control cabinet
  • Large‑scale water‑treatment PLC installation
  • Spare‑part replacement for existing S7‑400 automation system Performance Parameters:
  • Rated maximum power delivery capacity for S7‑400 rack back‑plane
  • Input frequency adapt 50 Hz / 60 Hz
  • Fault diagnostic bit feedback to S7‑400 CPU Material Composition:
  • Module housing: Flame‑retardant reinforced plastic
  • Power circuit: Industrial switching‑mode power‑supply PCB
  • Back‑plane connector: Gold‑plated multi‑pin rack connector
  • Internal components: High‑temperature electrolytic capacitors, power semiconductors Structural Characteristics:
  • Standard S7‑400 plug‑in module for UR rack slot 1
  • Front‑panel LED indicator set
  • Mains input terminal block located on module front face
  • Rear edge connector mates with S7‑400 rack back‑plane bus Working Principle: AC mains input pass filtering and rectification. Switching power‑supply circuit generate stabilized 5 VDC logic power and auxiliary 24 VDC output for rack back‑plane. Monitoring circuit continuously detect output voltage, current and temperature. Fault status display via LED and transmit to S7‑400 CPU for system diagnosis. Installation Requirements:
  • Must install in slot 1 of S7‑400 UR rack
  • Fasten mains‑input terminal‑block screws with specified torque
  • Keep vertical ventilation clearance above module for convection heat dissipation
  • Cabinet ambient temperature must maintain within 0 °C‑60 °C
  • S7‑400 rack grounding comply with Siemens EMC specification Usage Precautions:
  • Disconnect AC mains before inserting or removing power‑supply module
  • Calculate total rack power consumption, shall not exceed 10 A rated capacity
  • Do not block cabinet ventilation openings
  • Apply ESD protection when module taken out from rack
  • Ensure STEP 7 hardware configuration matches actual power‑supply model
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