Description
TOSHIBA PU662T PLC Power Supply Module
Technical Specifications Model: PU662T Input Voltage: 100~240VAC wide range AC input, 50/60Hz DC Output: Multiple regulated DC channels for backplane bus Mounting Form: Plug-in module on Toshiba PLC base rack Operating Temperature: 0℃ ~ +60℃ Storage Temperature: -20℃ ~ +75℃ Relative Humidity: 10% ~ 90% non-condensing Protection Function: Overvoltage protection, overcurrent protection, overtemperature protection Indicator: Power OK LED indicator
Functional Features Wide AC input voltage range adapts to industrial power grid voltage fluctuation. Multi-channel stable DC output supplies power to all modules on PLC rack through backplane bus. Built-in multi-protection circuit cuts off output automatically once fault condition occurs. Power OK LED directly shows normal power output state. Plug-in structure supports installation and removal on PLC rack. Low ripple DC output reduces interference to PLC logic and communication circuit. Stable output voltage under load change and input voltage fluctuation. Suitable for continuous long-time operation in industrial control cabinet.
Application Scenarios Factory production line PLC control cabinet, water treatment automatic control system, packaging machinery control rack, building automation control system, chemical auxiliary control PLC cabinet.
Performance Parameters Low voltage ripple under rated full load. Protection circuit responds rapidly to overvoltage, overcurrent and overtemperature fault. Output voltage keeps within tolerance range with AC input from 100VAC to 240VAC. Module maintains stable power output after long continuous running. Protection circuit recovers automatically after fault removal and power reset. Backplane power transmission ensures stable power supply for each rack module.
Material Composition Module housing: Black flame-retardant engineering plastic. Main PCB: FR4 multi-layer industrial printed circuit board with conformal coating. Core electronic components: AC-DC switching power chip, high frequency transformer, rectifier diode, filter capacitor, protection IC, optocoupler isolation element. Connector: Gold-plated edge connector for PLC backplane connection. Indicator: Power status light emitting diode. Fasteners: Plastic positioning buckle.
Structural Features Rectangular plug-in module matching Toshiba PLC rack slot. Front panel equipped with power OK LED indicator. Gold-plated edge connector on rear side inserts into rack backplane socket. Internal circuit separates high voltage AC input section and low voltage DC output section with isolation barrier. Natural convection heat dissipation through ventilation holes on plastic housing. Positioning buckle on module side for alignment and locking on rack slot.
Working Principle AC input power enters module through backplane connector. EMI filter suppresses power grid interference. High-frequency switching circuit converts AC power into isolated multi-channel DC voltage. Rectifier and filter circuit smooth DC ripple. Voltage feedback circuit continuously monitors output voltage and adjusts switching duty cycle to maintain stable output value. Overvoltage, overcurrent and overtemperature circuit monitors module operating state in real time. Once exceeding threshold, protection circuit shuts down switching stage to protect module and rack PLC modules. Power OK LED lights up when all DC output channels run normally.
Installation Requirements Cut off PLC rack main power before installing or removing PU662T module. Align module with empty rack slot, push inward until backplane connector fully inserts and buckle locks. Connect AC power wiring to base rack power terminal according to wiring drawing. Power on rack after installation, check power OK LED status. Reserve ventilation space around module slot to avoid heat accumulation. Measure each DC output voltage with multimeter in commissioning phase.
Usage Precautions Only compatible with matched Toshiba PLC base rack, cannot be used for other brand PLC systems. Cut off rack AC power before plugging or unplugging module. Do not exceed rated total output load of power supply module. Avoid environment with condensation, corrosive gas and conductive dust. Clean accumulated dust on ventilation holes periodically. Do not open plastic housing without professional authorization, internal high voltage circuit exists. Replace module when repeated protection shutdown occurs.
