Ping Binary Sensor scan_interval being ignored?

I’m trying to reduce the delta between running the ping command on ping binary sensors to something less than 5 minutes. So far I’ve tried 5 seconds, 10 seconds and 30 seconds, but none of them made a difference.

What am I missing or doing wrong?

 -  platform: ping
    host: 192.168.0.1
    name: ping_router
    scan_interval: 30
    count: 3