DC Bus Link Connector X3

The DC bus link can be connected in parallel so that the power returned from slowing down motors is divided between all the servo drives that are connected to the same DC bus link circuit. Every servo drive must have its own power connection to mains voltage sharing the same branch, over current protection devices, even if the DC bus link is used. Servo drives working generatively very often should be placed beside servo drives, which need energy. That reduces current flow on longer distances.

The servo drives can be destroyed if DC bus link voltages are different. Only servo drives with mains supply that share the same AC branch, over current protection devices (identical mains supply voltage) may have the DC bus links interconnected. Interconnection of DC bus links works best in systems powered by 3-phase AC or DC power. Consult Kollmorgen for DC bus linking with single phase AC power input.

Mains supply, external regen resistor, DC bus KED-6V03/KED-6V06: 7 pin, pitch 5.08mm Tightening torque for mounting screws: 0.3Nm Tightening torque for ladder screws: 0.5-0.6Nm KED-6V12: 8 pin, pitch 6.35mm No screw contacts   Mating connector data (see "Wiring")

Pin	Label	Signal	Description
7	+DC	+DC	DC Bus link positive
8	-DC	-DC	DC Bus link negative

 

DC Bus sharing between Kollmorgen Essentials Drives

All servo drives are connected to AC with the same number of phases and the same voltage.

When several units are connected to the same AC mains the units need to be able to share a common DC Bus via the X3 connector, as shown in the following table:

Further explanation:

One DC Bus can be shared by 2 KED-6V03...06 or 3 KED-6V12.

Connect the regen resistor to the servo drive with the highest current rating.