Product Description:

The DIGIFAS 7206 servo amplifier is manufactured by Kollmorgen as part of the DIGIFAS 7000 Servo Amplifiers series. It is a panel-mounted drive that regulates motor phase current so machine axes receive precise torque and speed commands instead of fixed mains power. The unit links PLC motion blocks to synchronous or induction motors in packaging, printing, and material-handling installations where fast response and compact control hardware are required.

The power section can sustain a continuous output of 6 A RMS and tolerate a momentary peak of 12 A RMS, allowing short acceleration bursts without saturating the transistors. A current-loop bandwidth of 1 kHz pairs with an 8.33 kHz output-stage clock so the amplifier can quickly correct load disturbances on high-speed motors. Command data enter the controller with 14-bit setpoint resolution through a 20 kΩ input, while the connected motor circuit must provide at least 6 mH of inductance for stable switching. Dynamic braking energy is shunted into a 75 Ω ballast resistor, and the drive can supply up to 1 A to an external brake coil. During operation, the copper and semiconductor path has a voltage drop of only 5 V, and the idle electronics draw 15 W, keeping cabinet heat low.

An intermediate circuit voltage of 560 VDC feeds the inverter. If regenerated energy raises this rail to the 750 V overvoltage threshold, the unit disables the IGBTs to protect the insulation. The supply section is rated for 3.5 kVA, matching mid-frame servo motors used on feeders or gantry carriages. Total power dissipation reaches 60 W at rated current, so standard enclosure airflow is adequate. The IP20 housing prevents accidental finger contact with internal components, but the unit must be installed inside a closed panel that is free of conductive dust.