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Programming 6-37MN792
Ramps Continued
t
Minimum Speed
Drive Enabled
100%
0%
Ramp Input
X%
t
0
Ramp
Input
t
100%
0%
X%
t
0
Ramp
Output
Y%
This figure shows the effect of setting MIN. Speed
above 0.00%. When the drive is enabled, the ramp
output cannot decrease below the MIN. Speed value.
Note the ramp rates are used when changing the
output from minimum speed to zero speed. Notice also
that in this example the ramp output only increases to
X% since the ramp input signal is limited to X%.
t
Auto Reset
Drive Enabled
100%
0%
Ramp Input
X%
t
0
Ramp
Input
t
100%
0%
X%
t
0
Ramp
Output
With Auto Reset enabled, the ramp output resets to
reset value each time the drive is enabled. In this
example, reset value is 0.00%. It does not reset if the
drive is disabled.
t
External Reset
Drive Enabled
100%
0%
Ramp Input
X%
t
0
Ramp
Input
t
100%
0%
X%
t
0
Ramp
Output
The ramp input is set to X% at time t
0
. The ramp
output will increase at the ramp rate. While external
reset is enabled, the ramp output resets to reset value.
When external reset is disabled, the ramp output
continues to follow input signal.
Y%