No, PCR-LA series can only add ripple to a DC voltage; it cannot add ripple (AC signal) to an AC voltage.
However, PCR-LE series can add ripple by using an external signal source with the optional EX05-PCR-LE (analog interface). In addition, PCR-WE/WEA series can combine an external AC signal with an internal AC signal for output.
Please read the following manuals for the details:
PCR-LE series: User’s manual – chapter of Specifications – Option Specifications
PCR-WE/WEA series: User’s manual – chapter of External Control – Control Using Analog Signals
