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PSI6300.356-L1 Bosch Rexroth Indramat

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Internal Product Review

The PSI6300.356-L1 is a medium frequency inverter built for dependable industrial drive service, with 400-480 VAC mains input and 50/60 Hz operation. Air-cooled construction and IP20 protection support clean cabinet integration and stable thermal management in controlled environments. A 24 VDC integrated power supply rated to 2 A adds practical system support and rounds out a well-engineered inverter package.

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Product Description:

The PSI6300.356-L1 is a medium-frequency inverter manufactured by Bosch Rexroth Indramat for the PSI Frequency Inverters series. It converts fixed-frequency mains power into a variable, higher-frequency output suited for induction heating, high-speed spindles, and other motion tasks that require precise frequency control during automated production. An integrated auxiliary supply and an INTERBUS timer interface allow the unit to exchange status information and gating commands with PLC hardware. Rated for climatic category 3K3, the inverter is intended for clean, ventilated control cabinets rather than exposed process areas.

The power stage accepts three-phase 400 to 480 VAC at 50 or 60 Hz, allowing operation with the 415 V and 460 V power grids used in many plants. An IP20 housing protects against accidental contact with live parts while permitting the free convection required by its air-cooled design. The built-in converter supplies the control electronics with 24 V DC and provides a continuous output current of 2 A, eliminating the need for a separate DIN-rail power supply. This auxiliary output can support peripheral sensors, relays, and fieldbus transceivers when the main inverter section is disabled during a machine safety stop. The accepted voltage and frequency ranges must be considered when selecting upstream protection and connecting the unit to the plant power system.

Heat dissipation from the switching devices is limited to 360 W, and cabinet airflow or ducting must remove this heat to keep semiconductor junction temperatures within their permitted limits. The inverter can operate when the ambient temperature remains between +10 and +55 °C. When powered down, the unit can be stored at temperatures from -25 to +70 °C without damage. Installation is manageable because the inverter weighs 20 kg and uses standard mounting holes on its backplane. INTERBUS timing supports synchronized frequency ramps, while the air-cooled design avoids liquid circuits and external heat exchangers that would otherwise complicate the control-panel layout.

Climatic category
3K3 according to EN 60721-3-3
Cooling Method
Air Cooled
Degree of protection
IP 20
Integrated power supply unit Output current
max. 2 A
Integrated power supply unit Output voltage
24 VDC
Mains frequency
50 or 60 Hz
Mains Voltage
400 - 480 VAC
Max. cooling losses
360 W
Product Type
Medium Frequency Inverter
Temperature range Operation
+10 -+55 ºC
Temperature range Storage / transport
-25 - +70 ºC
Timer Type
INTERBUS
Weight
approx. 20 kg

Frequently Asked Questions about PSI6300.356-L1:

Q: What mains voltage does the PSI6300.356-L1 frequency inverter support?

A: The PSI6300.356-L1 frequency inverter operates at a mains voltage range of 400 to 480 VAC, accommodating standard industrial power supplies.

Q: What cooling method does the PSI6300.356-L1 frequency inverter utilize?

A: This inverter uses an air cooled method to maintain suitable operating temperatures during use.

Q: What is the maximum output current of the integrated power supply unit in the PSI6300.356-L1?

A: The PSI6300.356-L1 provides an integrated power supply unit delivering up to a maximum output current of 2 A.

Q: What is the degree of protection for the PSI6300.356-L1 frequency inverter?

A: This model has an IP20 degree of protection, offering basic enclosure protection from solid objects greater than 12.5 mm but not from water.

Q: What is the operational temperature range of the PSI6300.356-L1?

A: The operational temperature range for the PSI6300.356-L1 is between +10°C and +55°C, ensuring reliable function in typical industrial settings.

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