Description

GE IC695PSA140

The GE IC695PSA140 is a supporting power supply module for the RX3i series PLCs. Specifically designed to provide stable DC power supply for industrial automation control systems, its core function is to convert AC input into precise DC power required by PLC main units, I/O modules and peripheral equipment. It is widely used in key scenarios such as intelligent manufacturing production lines, chemical DCS systems and power equipment monitoring platforms. As the central hub of the system's power supply, its stability directly determines the operational reliability of the entire control system, making it a core component that requires key attention in industrial operation and maintenance.

I. Technical Parameters

1. Input and Output Parameters: Supports wide AC voltage input of 85-265V, compatible with global power grids; outputs DC 5V/10A, with an output voltage accuracy of ±0.5% and a load regulation rate of ≤±1% to ensure power supply stability; ripple and noise ≤50mVp-p to avoid interference with precision control circuits.
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3. Electrical Performance: Conversion efficiency ≥90% (at rated load), power factor ≥0.95; equipped with four-fold protection against overcurrent, overvoltage, overtemperature and short circuit. The overcurrent protection threshold ranges from 110% to 150% of the rated current, and the overtemperature protection trigger temperature is 85℃±5℃.
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5. Environmental and Physical Parameters: Operating temperature ranges from 0℃ to 60℃, storage temperature ranges from -40℃ to 85℃; relative humidity is 5%-95% (non-condensing), and electromagnetic interference resistance complies with the IEC 61000-4-2/3 standard; dimensions are 140mm×100mm×75mm, suitable for standard DIN rail mounting and compatible with RX3i series racks.

II. Functional Features

1. Wide Voltage Adaptability and Precise Power Supply: The wide AC input design of 85-265V can handle industrial power grid fluctuations and unstable power supply in remote areas; the DC 5V output accuracy reaches ±0.5%, and even when the load fluctuates within the range of 10%-100%, the output voltage fluctuation is still controlled within a very small range, providing pure power for the PLC core circuit.
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3. Multiple Protections and High Reliability: Built-in overcurrent, overvoltage and short-circuit protection circuits, which can respond quickly within 100μs in case of faults and protect equipment by limiting current or shutting down output; the overtemperature protection adopts an intelligent cooling fan for heat dissipation. The fan stops running when the load is ≤50%, balancing heat dissipation and energy saving, with a mean time between failures (MTBF) of ≥100,000 hours.
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5. Convenient Operation and Maintenance, and Integration: Equipped with three-color LED indicators for PWR (power supply), FAULT (fault) and OUT (output) to intuitively display the operating status; supports hot swapping (requires RX3i system firmware V4.0 or above), no need to shut down the machine during replacement; parameters such as output current and module temperature can be read through PLC diagnostic software to achieve remote monitoring.

III. Working Principle

1. Rectification and Filtering: After the AC input is filtered to remove interference by the EMC filter circuit, it is converted into pulsating DC power by the rectifier bridge, and then smooth high-voltage DC power is obtained through capacitor filtering.
2. Regulated Conversion: The high-voltage DC power is converted into high-frequency pulses by the power switch tube driven by the PWM controller. After being stepped down by the transformer, low-voltage DC power is obtained through rectification and filtering. The feedback circuit samples the output voltage in real time and dynamically adjusts the PWM pulse width to achieve voltage stabilization.
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4. Protection and Feedback: It monitors parameters such as output current and module temperature in real time, and triggers protection in case of abnormalities; at the same time, it feeds back the operating status to the PLC through the bus to realize fault early warning.

IV. Common Faults and Troubleshooting Methods

1. Fault 1: No output, FAULT light is onCauses: Mostly abnormal input voltage, load short circuit or overtemperature.Troubleshooting: Measure the input voltage with a multimeter; disconnect the load and restart to check for short-circuited equipment; clean the heat dissipation holes to improve ventilation.

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3. Fault 2: Low output voltage, abnormal load operationCauses: Low input voltage, load overload or faulty feedback circuit.Troubleshooting: Detect the input voltage and install a voltage stabilizer if necessary; calculate the load current, reduce the load or connect modules in parallel; contact after-sales service to repair the feedback circuit.

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5. Fault 3: Fan makes abnormal noise or does not rotateCauses: Fan dust accumulation or aging.Troubleshooting: Turn off the power and clean the dust on the fan; if the fan does not rotate, replace it with a fan of the same specification to avoid triggering overtemperature protection.