What is the performance when two PBZ series units are connected in parallel?

If you use the optional parallel operation kit and perform the master-slave parallel operation setting, the performance will not be significantly different from that of the stand-alone unit.
If you want to connect three or more units in parallel, please consider PBZ SR series.
To set the master unit, go to the CONFIG settings and choose PARALLEL > OPERATION > MASTER, and specify the total number of units in parallel operation in UNIT.
To set the slave unit, go to the CONFIG settings and choose PARALLEL > OPERATION > SLAVE.
For the details, read the user’s manual – chapter of Memory, Response, and Configuration – CONFIG[5]: Master or Slave Unit in Parallel Operation.