PSI62C0.780-W1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat PSI62C0.780-W1 is part of the PSI Frequency Inverters series. It features a rated mains current of 220 Amps with a maximum primary current of 1200 Amps and operates at a maximum altitude of 2000 meters. The device is rated IP20 for degree of protection and requires a minimum cooling water flow of 4 liters per minute.
Internal Product Review
The PSI62C0.780-W1 is a Bosch Rexroth Indramat PSI frequency inverter with IP20 protection for installation in an IP54 cabinet. Rated for 220 A mains current and 1200 A max primary current, the design offers impressive current-handling capability for demanding drive applications. Efficient water cooling with a 4 l/min minimum flow makes this inverter a well-engineered choice for stable high-load operation.
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Product Description:
Bosch Rexroth Indramat’s PSI62C0.780-W1 frequency inverter belongs to the PSI Frequency Inverters series and is intended for cabinet-mounted motor control in automated machinery. The unit converts fixed three-phase mains into a variable output that regulates speed and torque, enabling precise acceleration profiles, energy savings, and dynamic stopping without mechanical throttles. Its liquid-cooled design allows the inverter to be fitted in high-density cabinets without raising ambient temperature even when multiple drives are installed side by side on a single panel.
The inverter introduces several electrical and thermal figures that set its integration boundaries. Cabinet power dissipation rises to 210 W under maximum utilization, while external heat exchangers must be able to remove an additional 700 W of cooling losses from the water circuit. For short-duration surges, the DC link can draw a primary current of 1200 A, and continuous operation is supported at a mains current of 220 A. Because the housing carries an ingress rating of IP20, it must be installed inside a suitable control enclosure rather than exposed on the machine frame. These numbers guide the sizing of feeder conductors, circuit protection, and cooling plates so that semiconductors remain within their junction temperature limits during heavy regenerative or braking cycles.
Environmental limitations complete the installation profile. The drive can be mounted at altitudes up to 2000 m without derating, yet the surrounding cabinet still releases only 69 W of basic standby heat when the power stage is idle. Liquid cooling must circulate at least 4 l/min through the internal heat sink; at that flow, the pressure drop is 0.6 bar, so pump selection must account for the added head. The cabinet or rack that houses the inverter must itself meet an IP54 protection requirement, ensuring splash and dust protection even though the device’s own terminals are accessible inside the bay.
