CT34002a_e.doc / Nov-15
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8.2.
Set Directions of Rotation
The direction of rotation must be defined for both, master and slave encoder. Make sure the
Reset is switched on when you do this (the softkey must show “Reset is ON”)
Move the Master encoder into forward direction (manually or by means of a remote speed
signal to the Master drive). Observe the “Counter Master” value shown in the monitor
window on the right. It must count up to positive values. Where you find it counts down or
to negative, please click to button “Master Direction” to change the counting direction.
Move the Slave encoder into forward direction (manually or by enabling the Slave drive
while the Master is moving forward). Observe the “Counter Slave” value. It must again
count up to positive values. Where you find it counts down or to negative, please click to
button “Slave Direction” to change the counting direction.
8.3.
Tuning the Analogue Output
Switch Reset to ON by clicking to the corresponding softkey on the screen.
Enable both, Master and Slave drive. Turn the speed signal for the Master to approximate
25% of the maximum speed. The Slave should now move, too. As a next step, switch the
Reset to OFF by clicking to the Reset button (showing actually “Reset On”). This will
activate the closed loop control.
Observe the color bar and the value of the differential counter. There are the following
two possibilities:
a.
The bar graph moves to the right and the differential counter shows positive values.
This indicates that the analogue output is too low. Please increase the setting of
“Gain Total” by scrolling up with the arrow key on the right, or by shifting the slider
into a more right position.
b.
The bar graph moves to the left and the differential counter shows negative values.
This indicates that the analogue output is too high. Please decrease the setting of
“Gain Total” by scrolling down with the arrow key on the left, or by shifting the
slider into a more left position.
“Gain Total” is set correctly when the bar graph remains in its centre position and the
differential counter swings around zero (e.g. +/-8 counts)
Turn speed signal for the master to approximately 80% of maximum speed. Continue to
observe the color bar and the value of the differential counter and adjust “Gain Total”
again if necessary.
You can reset the differential counter to zero at any time between, by cycling
the “Reset” command.
