Fs340_02b_oi_e.docx / Nov-21
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Set Directions of Rotation without PC
If there is no PC or Laptop available, the direction of rotation of the master and slave encoder
can be adjusted alternatively by observing the differential counter.
First of all the position error (differential counter) must be shown on the display of the device
(see chapter 7.3); with factory settings the default display value is the differential counter.
Then you must move each drive solely (while the other drive is at standstill):
•
First move the master encoder into forward direction (manually or by means of a remote
speed signal to the master drive) while the slave drive is stopped. The differential counter
thereby must count up, i. e. the position error must increase. If the differential counter
counts down, please reverse the counting direction by parameter F04.034 “Counting
Direction”.
•
Then move the slave encoder to forward direction (this is the direction to which the drive
moves with a positive speed set-point) while the master drive is stopped. The differential
counter thereby must count downwards, i. e. the position error must decrement.If the
differential counter counts upwards, please reverse the counting direction by parameter
F04.034 “Counting Direction”.
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 differential counter value and oscillogram. There are the following two
possibilities:
o
The differential counter value is positive (oscillogram curve moves upwards).
This indicates that the analog output value is too low. Please increase the setting of
“Gain
Total
” by turning the rotary control knob clockwise or by scrolli
ng up with the
corresponding arrow key.
o
The differential counter value is negative (oscillogram curve moves downwards).
This indicates that the analog output value is too high. Please decrease the setting of
“Gain
Total
” by turning the rotary control knob
counterclockwise or by scrolling down
with the corresponding arrow key.
“Gain Total” is set correctly when the oscillogram curve remains in its center position and the
differential counter swings around zero (e.g. +/-8 counts).
Now increase the master speed step-by-step until you reach the maximum speed of the
application. Continue to observe the oscillogram curve 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.
