UMAX090600 Version 1
Preliminary Documentation – May be Subject to Change
13-48
When the control input is OFF, the output is always at zero. When the input comes ON, the profile
ALWAYS starts at position (X
0
, Y
0
) which is 0 output for 0ms.
When using the Lookup Table to drive an output based on
time
, it is mandatory that setpoints
“Ramp
Up (min to max)”
and
“Ramp Down (max to min)”
in the Output X Drive function block be set to
zero
. Otherwise, the output result will not match the profile as expected. Recall, also, that the Y-Axis
range of the table should be set to match the Output Drive range in order to get a 1:1 response of
table output versus drive output.
In a time response, the interval time between each point on the X-axis can be set anywhere from
1ms to 24 hours. [86,400,000 ms]
One final note about the Lookup Tables is that if a digital input is selected as the control source for
the X-Axis, only a 0 (Off) or 1 (On) will be measured. Ensure that the data range for the X-Axis on
the table is updated appropriately in this condition.
