Avidyne IFD550 - Negative Climb Rate; Altitude Lost after Takeoff

IFD500 Series Pilot Guide
4-52 Map Subsystem
The EDR “Sink Rate” alert can trigger as low as -1250 fpm, while the
“Pull Up” alert can trigger as low as -1500 fpm. EDR “Pull Up”
warnings are the highest priority of all TAWS alerts, even higher than
FLTA warnings.
NEGATIVE CLIMB RATE / ALTITUDE LOST AFTER TAKEOFF
The final function of the TAWS system is the alert for a negative
climb rate (NCR) or excessive altitude lost after takeoff/go-around.
Therefore, NCR is enabled only between 50 and 600 feet AGL.
When enabled, this function triggers a “Don’t Sink” caution with an
associated aural message if there is excessive negative vertical
speed or if there is excessive altitude loss (approximately 10% of
altitude). The alerts will clear if the CAS message is acknowledged,
the aircraft AGL altitude increases past the previous highest value, or
the aircraft reaches 600 feet AGL.