Product Description:

The DCPS-3 is a regulated DC power module produced by Okuma as part of the DC Power Supplies series. Installed between the facility mains and the servo amplifiers, it converts incoming power into a stable DC link that feeds multiple motion drives. This arrangement supports continuous energy delivery for coordinated machining and positioning tasks in industrial automation. Because the module serves as the central DC source, AC conversion is separated from the individual servo amplifiers.

This supply is designed for a rated line of AC 200 V and draws power from a three-phase AC network, allowing balanced loading on the plant distribution system. Its bus section can pass a continuous 60 A, so the connected drives receive adequate current during simultaneous axis acceleration. The internal converter establishes a link voltage of 300 VDC, which matches compatible servo amplifiers without additional regulation. For branch protection, a built-in breaker is calibrated at 50 A, and it isolates the cabinet when an overcurrent fault occurs. Seven indicator LEDs report operating state, alarms, and voltage conditions, while a push-button discharge switch helps bleed residual energy after shutdown. Five check terminals allow verification of critical potentials without dismantling wiring.

The unit coordinates power for up to 3 axes, so one module is sufficient for many medium-sized CNC machines. Overvoltage detection engages at 430 VDC, disabling the drive chain before component stress rises, whereas undervoltage logic activates below 220 VDC to help prevent torque loss during brownouts. A 100 kΩ bleeder resistor rated at 2 W is permanently bridged across the bus, which helps discharge stored energy after the main contactor opens. These protective and discharge functions support controlled shutdown behavior when the input supply is removed or the DC bus moves outside its intended operating window.