Product Description:

The PSI63C0.637-L1 belongs to the PSI Frequency Inverters series manufactured by Bosch Rexroth Indramat. As a frequency inverter, it converts constant three-phase mains power into variable voltage and frequency outputs so that induction or synchronous motors can be speed-controlled in automated machinery. The unit is intended for cabinet installation and integrates with plant-wide controls through a native DeviceNet fieldbus so that drive status, diagnostics, and setpoints can be exchanged with a PLC in real time.

The power section is rated for a mains input of 400–480 VAC in voltage class 1, while logic circuits are energized from a separate 24 VDC control supply. Protection is limited to IP20, indicating that the housing is finger-safe but not sealed against dust or water, so a forced-air cooling path must be maintained inside the panel. Network connectivity is handled by the DeviceNet interface, and configuration parameters are stored in non-volatile Flash Memory. Analog pressure-control circuitry can source up to 20 mA, and the I/O module can deliver 2 A from its 24 VDC rail. A separate 24 VDC auxiliary bus feeds the module, and the internal 24 V distribution is presented on a 3.5 mm, 14-pin terminal strip to simplify wiring.

Non-volatile operating data are buffered by an AA 3.6 V Lithium battery, helping retain parameters during extended power loss. On the fieldbus, the device can exchange up to 72 cyclic signals in each direction, supporting sizable control word maps without additional gateways. The inverter’s auxiliary supply can back-feed sensors with up to 2.5 A, while downstream digital modules are limited to a 2 A draw. The V24/RS232 (9-pin D-Sub) service port provides direct access for diagnostics and parameter setup. Environmental suitability corresponds to climatic category 3K3 per EN 60721-3-3.