5 configuring the frequency output, P.423), P.427) – Rockwell Automation FlexPak 3000 Digital DC Drive Version 4.3 User Manual
Page 127: P.425)
Configuring Parameters for the I/O Expansion Kit
11-11
11.5 Configuring the Frequency Output
The I/O Expansion kit has one unipolar frequency output. The output is unfiltered. The
full scale value (
FSV
) is based on the selected parameter group: load, speed, voltage,
power, field, or other.
The frequency output is read every 5msec when
FEEDBACK
SELECT
(P.200) is set to
DC
TACH
,
PULSE
TACH
, or
AC
TACH
. It is read every 10msec when
FEEDBACK
SELECT
(P.200)
is set to
ARMATURE
VOLT
.
FREQ
IN
ZERO
(P.423)
Specifies the
minimum input
frequency. This is the
frequency that
corresponds to zero.
Parameter Range:
2.0 to
FREQ
IN
FULL
SCALE
kHz
Default Setting:
2.0 kHz
Parameter Type:
Configurable
OIM Menu Path(s):
Input/Output - Frequency I/O
If the input frequency drops below the frequency specified by this parameter, the
resulting digital value remains zero (it will not go negative).
FREQ
OUT
FULL
SCALE
(P.427)
The frequency
generated when the
signal driving the
frequency output is at
full scale, as detailed
in table 11.1.
Parameter Range:
2.0 to 250.0 kHz
Default Setting:
250.0 kHz
Parameter Type:
Configurable
OIM Menu Path(s):
Input/Output - Frequency I/O
For example, if
FREQ
OUT
SELECT
(P.425) is set to
CML
FEEDBACK
, the
FREQ
OUT
FULL
SCALE
frequency value is output when armature current is at
MAXIMUM
CURRENT
(P.007). (
MAXIMUM
CURRENT
is used as the basis for current minor
loop scaling.)
FREQ
OUT
SELECT
(P.425)
Selects the signal
used to drive the
frequency output
(terminals 42,43, and
44 on the I/O
Expansion kit).
Parameter Range:
See table 11.1 for options.
Default Setting:
ZERO
Parameter Type:
Configurable
OIM Menu Path(s):
Input/Output - Frequency I/O