Schneider TSXPSY8500MC Power Supply

The Schneider TSXPSY8500MC delivers reliable DC power for Modicon Premium PLC systems. This module converts 100-240 VAC input into a stable 24 VDC output. You will find it in main racks and expansion chassis. It supplies 20 watts of continuous power for I/O and processor modules. Therefore, this unit ensures stable operation of your entire control system.

This module measures 130 mm in height and 40 mm in width. Its depth reaches 100 mm for standard rack mounting. The unit weighs approximately 0.48 kilograms. It contains one main switching transformer and six electrolytic capacitors. Four bridge rectifiers convert AC to DC for filtering. Additionally, you get three status LEDs on the front panel.

Key Technical Specifications

Parameter	Value
Manufacturer	Schneider Electric (Telemecanique)
Model	TSXPSY8500MC
Product Type	Power Supply Module
Input Voltage	100-240 VAC (50/60 Hz)
Output Voltage	24 VDC
Output Power	20 W
Output Current	0.83 A
Efficiency	85% typical
Hold-up Time	20 ms at full load
Height	130 mm
Width	40 mm
Depth	100 mm
Weight	0.48 kg
Transformer Count	1 (main)
Capacitors	6 (electrolytic)
Bridge Rectifiers	4
Energy Storage	≈ 1100 µF
Status LEDs	3 (PWR, OK, OVLD)
Protection	Overvoltage, short circuit
Operating Temperature	0°C to +60°C

Internal Architecture and Energy Storage

The Schneider TSXPSY8500MC stores moderate energy in its capacitor bank. Six electrolytic capacitors hold approximately 1100 microfarads of total capacitance. This storage allows the supply to ride through 20 ms AC line drops. A switching regulator operates at 65 kHz for high efficiency. The main transformer provides 1500 VAC isolation between input and output. An optocoupler feeds back output voltage for precise regulation. The module includes automatic overvoltage shutdown protection. A green LED confirms normal output voltage status.

Connection Interfaces and Wiring Details

You will find a 4-terminal AC input block on the bottom edge. Connect live, neutral, and ground wires to the first three terminals. Use 14 AWG copper wire for all AC connections. The Schneider TSXPSY8500MC also includes a dedicated 2-pin DC output connector. This connector supplies 24 VDC to the Premium backplane. Two additional terminals provide auxiliary 24 VDC for field devices. Always connect the protective earth terminal before applying power. A red LED indicates overload or short circuit condition. The power supply automatically recovers after removing the fault.

Installation and Mounting Steps

You slide this power supply into the leftmost slot of the Premium rack. First, align the module with the backplane guides carefully. Then, push it firmly until the connector seats completely. Secure the front panel with the integrated locking screw. Connect the AC input wires to the proper terminals. The Schneider TSXPSY8500MC automatically detects 100-240 VAC input. Verify that the voltage selector switch matches your local supply. Do not exceed 20 watts total output power continuously. The module draws no power from the backplane itself. It supplies all necessary power to adjacent I/O modules. Power on the system and check the green OK LED before proceeding.