Rockwell Automation 1397 DC Drive Firmware 2.xx - Manual (Page 160)

5–50 Programming Parameters
Publication 1397-5.0 — June, 2001
INPUT CONFIG
[Freq In Zero] — P.138
Only used if the I/O Expansion kit is installed.
Specifies the minimum input frequency. This
is the frequency that corresponds to a value
of zero. If the input frequency drops below
the frequency specified by this input
parameter, the resulting digital value remains
zero (it will not go negative).
Display/Drive Units: kHz
Parameter Type: Configurable
Group: Input Config
Factory Default: 2.0 kHz
Minimum Value: 2.0 kHz
Maximum Value: 250.0 kHz