PSI6200.650-W1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat PSI6200.650-W1 is a medium frequency inverter from the PSI Frequency Inverters series. It supports a mains voltage of 400 to 480 VAC and has a nominal current rating of 220 Amps with a maximum output current of 1200 Amps. The inverter features water cooling with a flow rate of 4 liters per minute, and provides protection class IP20.
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Product Description:
The PSI6200.650-W1 is a medium-frequency inverter produced by Bosch Rexroth Indramat as part of the PSI Frequency Inverters series. It converts fixed utility power into controlled, higher-frequency output that supplies induction heaters, plating sources, or other high-current loads found in automated manufacturing cells. Its design integrates with cabinet systems where water cooling is available, allowing the unit to deliver stable current while occupying less panel space than air-cooled converters of comparable rating. The converter is intended for applications that need repeatable energy delivery during rapid production cycles and varying load conditions.
This inverter operates from a three-phase supply of 400–480 VAC, while its control electronics draw a separate 24 V DC feed. A carrier clock of 1 kHz sets the switching pattern of the output stage, balancing electromagnetic noise and conversion efficiency. Continuous output is rated at 220 A, so process power remains steady without thermal derating within the normal operating range. The housing has an IP20 rating, so it must be mounted inside a closed electrical cabinet. Overvoltage events on the DC link are limited by an MOV network that clamps excess energy, and a DeviceNet timer interface synchronizes start and stop or dwell periods with a higher-level controller. A minimum clearance of 100 mm above and below the frame is required to allow service access and cable bend radius.
For peak process demands, the drive can produce up to 1200 A, and the associated intermediate transformer may draw a secondary surge of 54 kA. A water-cooled heat exchanger removes these losses; the circuit needs 4 L/min of flow, a maximum coolant temperature of 30 °C, and connects through an M16x1.5 threaded fitting. Cable lugs up to 95 mm² carry the output current to the bus bars. Ambient air around the cabinet may rise to 55 °C without reducing nominal output, provided the coolant parameters are maintained. Liquid cooling moves most waste heat away from the power section, which helps reduce thermal buildup inside the cabinet.
