Engineering notes grounded in systems we have designed and commissioned.
On a winder or a sectional paper machine, braking energy is too valuable to waste as heat. A shared DC bus lets every drive section return that energy to the grid instead.
Our double-drum winder drives run at 1500 m/min. As the roll builds, its radius and inertia change — constant-tension control is what keeps the web stable from empty core to finished roll.
A sectional paper machine is many drives that must behave as one. Speed-chain control keeps the draw constant; master/slave load sharing keeps the torque where it belongs.
Field drives, a control core, and an operator layer — three levels, one coordinated machine. Here is how we structure drive control for a wide, high-speed line.
A big common-DC-bus line fed by one rectifier can pollute the supply with harmonics. A 12-pulse front end is our standard answer for wide, high-speed machines.
On our paper-machine drives the master/slave load-sharing ratio is not fixed — it follows grade, basis weight, speed, wire tension and vacuum automatically.
Unwind tension, rider-roll pressure, reversible control — three functions our high-speed winder drives perform to keep the roll clean.
On a double-drum rewinder the two bottom rolls do not share torque equally. The difference between them is what sets how hard the finished roll winds — and it has to track the building roll.
Every drive and MCS we deliver is engineered against the GB and IEC standards that govern electrical terminology, EMC, rotating machines and low-voltage switchgear.
Bring us a new line, a system upgrade, or a control and electrical challenge that has to work on the floor. Our engineering team will take every conversation seriously — and turn it into a result you can run.
