The OPC-E2-PG: The OPC--PG is a Fuji Electric Interface Card for the FRENIC-Ace drive series. It is a pulse-generator option card that mounts inside the drive enclosure.
The card is listed as a Pulse Generator Input/Output type. That means it handles encoder signals — typically A/B quadrature or pulse-train feedback — so the drive can close the loop on motor speed. Without it, a FRENIC-Ace runs open-loop V/f or sensorless vector. Adding this card gives you the feedback path for tighter speed regulation, which matters on conveyors, winders, or any load where slip compensation isn't enough. Mounting is internal — the card plugs into the drive's option slot, not a separate DIN-rail enclosure. That keeps the wiring inside the drive's own EMC envelope, which is worth remembering if you're fighting noise on an encoder cable run. Overall depth is 4.7 in, height 3.5 in, sized to fit the FRENIC-Ace frame's internal bay.
This card is for ACE Drives and the FRENIC-Ace series specifically. If you're sourcing a spare for a line-down situation on a FRENIC-Ace, verify the drive's option slot compatibility — the card is application-classed as Communication, so it's the drive's way of talking to an encoder out on the motor shaft.