The French racer joined Caterham after spending his rookie season with rivals Marussia.
"It was very good to get back on track and for my first day with the team it’s been pretty good. We had a technical issue late in the morning session that stopped the car on track but the team did a good job to fix it and give me enough time in the afternoon session to complete 57 laps in total," he said.
Marussia did not use KERS in 2012, although Pic insists this isn't hindering his current progress.
"The important thing for the first day was starting to get used to the car, particularly working with KERS and my new team," he said.
"Everyone’s been very helpful since I first went to the factory and I’ve already spent time in the simulator there, and with my engineers and mechanics, so nothing was completely new to me. Obviously it’s important for me to feel comfortable in the car as quickly as possible and we’ve worked through a lot of the normal procedures today so I’m pleased with what we’ve achieved."
"Tomorrow we’ll keep working through a similar program, as well as some aero tests, and just keep adding to the mileage."