Overview

SIMOREG DC MASTER converters can be connected in parallel to increase their power output. The following boundary conditions must be met:

The terminal expansion option (CUD2) is required for each converter in the case of parallel connection. The terminal expansion contains the hardware and plug-in connectors required for transferring the firing pulses and the higher-level communication. Up to 6 converters can be connected in parallel.

When several converters are connected in parallel, the master unit must be located in the middle to reduce signal runtime. The maximum cable length for the parallel interface cable between the master and slave units at one end of the bus is 15 m.Separate commutating reactors (u_k min. 2 %) for the SIMOREG converters are needed for correct current distribution. The difference in tolerance between the reactors determines the current distribution. To avoid derating, a tolerance of 5 % or more is recommended.

Important

Only converters with the same DC current rating may be connected in parallel!

Permissible output current for parallel connection on compliance with the boundary conditions:

I_max = n x I_N(SIMOREG)

N = number of SIMOREG units