Product Description:

The digifas 7105-CAN is a servo amplifier manufactured by Kollmorgen for the DIGIFAS 7000 Servo Amplifiers series. It accepts commands over a dedicated CAN network and translates them into accurate phase currents for brushless servo motors used in automated assembly, packaging, and material-handling stations. The amplifier’s control section supervises supply, feedback, and fault channels so that the connected axis maintains commanded velocity and torque profiles throughout the full duty cycle of an industrial machine.

The power stage is energized from a DC link of 560 VDC; at this voltage the drive can deliver a continuous phase current of 5 A RMS and withstand short bursts up to 10 A RMS for rapid acceleration. An output stage clock of 8.33 kHz sets the switching period that shapes the motor current, while the current loop closes at 1 kHz to keep torque ripple low. If bus voltage climbs to 750 V, overvoltage circuitry commands a shutdown. With a power-loss figure of 70 W at rated load, cabinet ventilation can be sized predictably. Feedback commands enter with 14-bit setpoint resolution, and the resulting waveform exhibits a form factor of 1.01, indicating near-sinusoidal phase currents. A residual 5 V drop between bus and motor terminals must be considered when calculating mechanical shaft power.

An internal ballast dissipates up to 200 W of regenerative energy, provided the connected motor’s inductance is at least 8 mH so that di/dt remains within semiconductor limits. The control inputs present an impedance of 20 kΩ, minimizing loading on upstream motion controllers, and the supply side may be fused for a continuous S1 load of 3 kVA. Field wiring to the CAN interface is made through a SubD 9-pin socket, simplifying daisy-chain layouts. The enclosure has an IP20 rating, indicating finger-safe access only, so the unit is mounted inside a closed electrical cabinet where ambient heat and contaminants are managed by system-level cooling.