PXC3.E75-100A SIEMENS Power module

Description

PXC3.E75-100A SIEMENS Power module

Product Dimensions：

Product Description

A power module acts as the primary energy source for a controller rack or a distributed I/O station. It converts the incoming supply voltage—which can be a varying industrial AC or DC source—into the precise DC voltage required by the internal electronics. Beyond simple power conversion, these modules incorporate advanced protection circuitry to shield the delicate automation hardware from fluctuations, surges, and electrical noise present in industrial power grids.

Product Parameters

The technical specifications define the capacity and input/output characteristics of the module:

• Input Voltage Range: Wide-range input capabilities, typically supporting various AC phases or standard 24V DC inputs.

• Output Voltage: Regulated DC output designed specifically for the internal backplane bus and module electronics.

• Output Current: Rated capacity (measured in Amperes) that dictates how many expansion modules or peripherals the power unit can support.

• Efficiency: High energy conversion efficiency, often exceeding 90%, to minimize heat dissipation within the control cabinet.

• Mains Buffering: Integrated electrolytic capacitors that provide short-term buffering to bridge brief power dips or millisecond-level outages.

• Isolation: Primary-to-secondary galvanic isolation to ensure that faults on the input side do not damage the PLC components.

Product Advantages

• System Stability: Delivers a constant, ripple-free voltage that prevents CPU resets and communication errors caused by unstable power.

• Integrated Protection: Built-in safeguards against short circuits, overloads, and over-voltage conditions, which protect the entire PLC investment.

• Diagnostic Feedback: Equipped with status indicators and, in advanced versions, diagnostic interfaces that report the health of the power supply to the controller.

• Uniform Design: Matches the mechanical form factor of the PLC series, allowing for seamless mounting on the same DIN rail without the need for additional wiring accessories.

• Reliability: Designed for industrial duty cycles, featuring high MTBF (Mean Time Between Failures) ratings even when operating in high-temperature environments.

Precautions for Use

• Load Calculation: It is essential to calculate the total current consumption of all modules in the rack to ensure the power module is not operating at its maximum limit for extended periods.

• Heat Dissipation: Although efficient, power modules generate heat; they should be installed with the recommended clearances to allow for natural convection or forced cooling.

• Parallel Connection: Not all power modules are designed to be connected in parallel for increased current; check the technical manual before attempting to bridge multiple units.

• Input Fusing: Proper external fusing on the input side is necessary to protect the module and the incoming supply line from catastrophic failure.

Product Applications

Siemens power modules are utilized wherever a SIMATIC controller is deployed:

• Centralized Control Cabinets: Providing the primary power for a main PLC rack containing the CPU and high-density I/O.

• Distributed I/O Stations: Powering remote interface modules and their associated sensors/actuators in field-mounted boxes.

• Critical Process Control: Used in redundant power configurations to ensure continuous operation of chemical or energy plants even if one power source fails.

• Machine Building: Serving as the localized power source for modular machine sections that require independent electrical isolation.

Shipping Port: Xiamen, China

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