PSR4/5A-112-0400
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The PSR4/5A-112-0400 is a Kollmorgen single-phase servo power supply designed for industrial automation applications. It accepts a 115VAC input and provides a 140VDC output at 7A, with a peak current of 42A for 50ms. This unit also features an internal regeneration shunt resistor and is compatible with a control AC line input voltage of 90-132 VAC.
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Product Description:
The PSR4/5A-112-0400 is a single-phase servo power supply from Kollmorgen, a well-known industrial motion control company. This power supply converts standard AC line voltage into the DC voltage required by servo drives, which are the heart of industrial automation equipment. It takes a 115VAC input at 12A and produces 140VDC at 7A. It’s essential to have this conversion for controlled power in applications like robotics, CNC machining and material handling. The single-phase design makes it easier to install compared to 3 phase systems, so it’s perfect for many industrial applications. A key feature is it can handle a peak current of 42A for 50 milliseconds. Without this peak current capability, the power supply will trip or not deliver the power required and cause downtime.
The PSR4/5A-112-0400 also has an internal regeneration shunt resistor of 15 ohms. During deceleration or braking, servo motors can act as generators and feed energy back into the power supply. If not managed, this regenerative energy can cause voltage spikes and damage components. The shunt resistor dissipates this excess energy as heat to protect the power supply and other connected devices. The peak shunt regulator current is 15.3A, and the unit can handle 3.5kW of peak power during regeneration braking. The continuous power dissipation is 40 watts, and internal heat dissipation is 120 watts. These thermal characteristics are important for the long-term reliability and stability of the power supply. The minimum external regeneration shunt resistor is 5.5 ohms for design flexibility.
It also has a separate control AC line input voltage range of 90-132 VAC. This allows the control circuitry of the power supply to operate reliably even if the main AC input voltage is within this range. This is important in an industrial environment where voltage stability is an issue. The main DC bus output voltage when the unit is fed with 230 VAC is 160 VDC at 1.1A RMS. This is important to know the behavior of the power supply under different input conditions.
Frequently Asked Questions about PSR4/5A-112-0400:
Q: What are the key electrical specifications of this power supply?
A: This unit operates with a 115VAC input and delivers a 140VDC output with a continuous current of 7A. It also provides a peak current of 42A for up to 50 milliseconds, ensuring high-performance operation under demanding conditions.
Q: How does the internal regeneration shunt resistor contribute to performance?
A: The internal 15-ohm regeneration shunt resistor helps dissipate excess energy generated during braking or rapid deceleration of servo motors. This prevents power surges, improves system efficiency, and protects connected components from voltage spikes.
Q: What is the significance of the control AC line input voltage range?
A: The control AC line input voltage range of 90-132 VAC ensures operational flexibility, allowing the power supply to function in various industrial environments where voltage fluctuations may occur. This enhances reliability and reduces downtime risks.
Q: Can this power supply handle high peak currents, and why is this important?
A: Yes, the PSR4/5A-112-0400 can handle peak currents up to 42A for 50 milliseconds. This is crucial for applications requiring sudden power surges, such as rapid acceleration or load changes in servo motors, ensuring uninterrupted performance.
Q: What are the heat dissipation capabilities of this power supply?
A: The unit features an internal heat dissipation of 120 watts, with a continuous power dissipation of 40 watts and a peak power dissipation of 3.5 kW. These specifications help maintain thermal stability, preventing overheating and ensuring long-term reliability.
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