I just learned small detail, that even if you define a schedule in the Informatica Power Center Designer, it is not scheduled. You can check scheduling status in the Informatica Power Center Workflow Monitor. See – the status is empty.

Workflow scheduling status empty in the Workflow Monitor
And the worfklow schedule is defined as well.

Workflow schedule defined in Workflow Designer
The solution is that the workflow does not have Integration Service assigned. Once the service is assigned, it becomes Scheduled.

Assign Integration Service to the workflow
Now the status is correct – Scheduled

Workflow scheduling status “Scheduled” in the Workflow Monitor