PSR4/5A-275
by Kollmorgen
The Kollmorgen PSR4/5A-275 represents a robust solution in the PSR Servo Power Supplies lineup, engineered to deliver reliable three-phase power operation for demanding motion control systems. Manufactured by Kollmorgen, this power supply supports up to 6 BDS4s or BDS5s and operates on an input voltage range of 90 6280 VAC with a maximum main power input current of 75 Amps RMS. Designed for industrial environments, the unit requires a wire gauge for power bus of 8 AWG or larger and accommodates connector wire sizes of 22 618 AWG for signal and control and 16 AWG for power. Factory configured for RS-232 & RS-485 communication protocols, the PSR4/5A-275 ensures seamless integration with standard automation networks.
Technical performance is enhanced through an integrated Schaffner Model No. 258-75/34 filter, mitigating line disturbances and ensuring power quality. The supply employs U.L. rated time delay fuses (e.g., BUSS FRN-R series) on the main power input and includes a thermal overload relay within the regen resistor kit to protect against sustained overloads. Grounding integrity is maintained with 20 in/lb torque for ground studs, while terminal torque of 20 in/lb for main power and bus connection secures reliable electrical interfaces. Flexible installation is afforded by cable length increments available from 3 to 75 meters in 3-meter steps, and the design mandates twisted cables for AC line specification to minimize EMI.
Operational efficiency stems from the PSR4/5A-275's optimized thermal management and compact footprint. The unit's low overall heat dissipation profile reduces cabinet cooling requirements, while the stable DC output supports high-dynamic servo performance. Recommended use of 600 VAC insulated copper wires enhances system safety and meets industry wiring standards. With support for axis configuration up to six axes with BD5s, the power supply delivers consistent energy regulation across multi-axis drives, enabling synchronized motion and high-precision control.
Engineers will appreciate the versatile integration options enabled by the PSR4/5A-275's adherence to ISO and IEC power system guidelines. The module seamlessly interfaces with Kollmorgen BDS drives and higher-level controllers via RS-232/RS-485, facilitating centralized monitoring and diagnostics. Ideal for packaging machinery, robotic gantry systems, CNC automation, and process control applications, this power supply underpins scalable architectures and ensures high system uptime. Its combination of robust protections, flexible wiring accommodations, and broad compatibility make the PSR4/5A-275 a cornerstone component in advanced servo installations.
