I change the schedule in IDF file to 15min interval. as shown follows:

Schedule:Day:Interval,
  Air Velocity Schedule Default,          !- Name
  Velocity,                               !- Schedule Type Limits Name
  No,                                     !- Interpolate to Timestep
  00:15,                                  !- Time 1 {hh:mm}
  0.2,                                   !- Value Until Time 1
  00:30,                                  !- Time 2 {hh:mm}
  0.2,                                   !- Value Until Time 2

Attached is the IDF file.

When I run this model, I met an error:

   ** Severe  ** Line: 1152 Index: 3 - Error parsing "Schedule:Day:Interval". Error in following line.
   ** Severe  ** ~~~   1;

How do I solve this error?