Product Description:

The P70360-PNN is a stepper drive produced by Kollmorgen and belongs to the P7000 Stepper Drives series. It is intended to energize two-phase stepper motors in automated machinery, converting low-level command signals into controlled phase currents so tables, gantries, or feeders can move in precise increments. Within an automation cell, the drive acts as the power interface between the control system and the motor, supports repeatable commanded motion when correctly sized and configured.

During operation the internal DC bus is supervised for both high and low fault thresholds. An overvoltage trip occurs at 440 VDC, protecting the power stage from excessive regenerated energy, while input is inhibited if the bus falls below 130 VDC, preventing undervoltage misfires. Regenerative energy is redirected to the bus clamp circuit when voltage rises to 420 VDC, limiting dissipation to the rated 15 W. The continuous output current of 2.5 ARMS supports steady-state motion, and its peak value of 3.5 ARMS accommodates acceleration or static holding torque for brief periods. External circuit protection is supplied with a 7 A slow-blow fuse that clears sustained overloads without nuisance trips.

At power-up the supply line sees an inrush of 30 A that lasts only 4 ms, a characteristic that must be considered when sizing front-end filters or breakers. Once energized, the drive can deliver up to 350 W of mechanical power to the motor, yet its internal loss is limited to 15 W, allowing cabinet temperatures to stay within standard ratings when normal ventilation is provided. The intermediate bus diverts excess energy into a braking resistor once voltage climbs to 420 VDC, maintaining stability during rapid deceleration or vertical load lowering without exceeding component ratings.