Super Systems 7EK 31082 - Manual (Page 22)

17 GB
FEEDBACK POTENTIOMETER LIMITS
SETTING
NOTE: this function is available only if the manual mode is
enabled (P38 = On) and a closed loop servomotor control
(P5 = "Sñ.CL")or a servomotor control open loop with
feedback indication (P5="Sñ.OL" and P6 = "Fb.")has been
selected during configuration procedure.
When it is desired to calibrate the feedback potentiometer,
proceed as follow:
1) Connect the specific servomotor to the instrument.
2) Switch On the instrument.
3) Push the MAN pushbutton for more than 1 s.
The instrument will go in MANUAL mode and the MAN
indicator will lit.
4) Keep pushing the FUNC pushbutton until the "F.CAL"
parameter is shown on the lower display.
5) Pushing s or t select the "ON" indication and then
push the FUNC pushbutton.
The instrument will show on the upper display the
actual valve position in percent and, on the lower
display the "POS.L" message.
6) Pushing continuously s or t pushbutton, drive the
servomotor to the beginning of its stroke.
7) Push the FUNC pushbutton.
The display will show "Fb.LC" (feedback low limit
calibration).
8) Pushing s or t select the "ON" indication and push
the FUNC pushbutton.
The instrument will show on the upper display the actual
valve position in percent and, on the lower display the
"POS.H" message.
9) Pushing continuously s or t pushbutton, drive the
servomotor to the end of its stroke.
10) Push the FUNC pushbutton.
The display will show "Fb.HC" (feedback high limit
calibration).
11)Pushing s or t select the "ON" indication and push
the FUNC pushbutton.
The instrument memorizes the new feedback
potentiometer calibration and return in MANUAL mode.
NOTES:
1) The minimum span (Fb.LC - FbHC) acceptable for the
instrument is equal to 20 % of the potentiometer
stroke.
Pushbutton functionality during operating mode .
FUNC = o when the instrument is in "normal display
mode"
1) with a brief pressure (<3s) it starts the
parameter modification procedure.
2) with a pressure longer than 3s but briefer
than 10 s it changes the indication on the
lower display (see "display function").
3) with a long pressure (>10 s) it starts the
lamp test.
o During parameter modification, it allows to
memorize the new value of the selected
parameter and go to the next parameter
(increasing order).
MAN = pressed for more than 1 s, it allows to enable
or disable the manual function and, during
parameter modification, to scroll back the
parameters without memorizing the new
setting.
s = o when the instrument is in AUTO mode, it
allows to increase the value of the selected
parameter.
o when the instrument is in MANUAL mode, it
allows to close OUT 1 ( s) relay contact.
t = o when the instrument is in AUTO mode, it
allows to decrease the value of the selected
parameter.
o when the instrument is in MANUAL mode, it
allows to close OUT 2 ( t) relay contact.
s+MAN = During parameter modification they allow to
jump to the maximum programmable value.
t+MAN = During parameter modification they allow to
jump to the minimum programmable value.
"FUNC"+"MAN" = during operative mode they allows to
start the configuration mode.
NOTE: during run time mode a 10 or 30 seconds time out
(see P46) is applied to parameter modification procedure.
If, during operative parameter modification, no pushbutton
is pressed for more than 10 (30) seconds, the instrument
goes automatically to the “normal display mode” and the
eventual modification of the last parameter will be lost.
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