See the voltage/current fall time of PAN-A series as follows:

175 W model:
CV: Rated load: 50 ms (16-10 A: 5 ms), No load: 2000 ms (16-10 A: 500 ms)
CC: Rated load: 50 ms (16-10 A: 5 ms), Short-circuit: 1 ms

350 W model:
CV: Rated load: 20 ms, No load: 1500 ms
CC: Rated load: 20 ms, Short-circuit: 1 ms

700 W model:
CV: Rated load: 30 ms, No load: 2000 ms
CC: Rated load: 15 ms, Short-circuit: 1 ms

1K W model:
CV: Rated load: 20 ms, No load: 3000 ms
CC: Rated load: 20 ms, Short-circuit: 1 ms

Please note that these values are for reference only and not specified as the specifications.