Is it possible to monitor the output voltage and current of PBZ series?

Yes, you can monitor them through the CV MONITOR or the CC MONITOR pin of the J1 connector, which generate a ±2 V voltage.
Additionally, for current monitoring, you can use the front panel I MON terminal, which generates a ±2 V voltage proportional to the rated current.
For example, in the case of PBZ20-20, if the output current is +20 A, a voltage of +2 V will be generated, and if the output current is -20 A, a voltage of -2 V will be generated.
For the details, read the user’s manual – chapter of External Control, Parallel Operation, and Synchronization – Signal Output or chapter of Basic Features – Measurement Feature and Current Monitor Output.