
GEH-6641E
—————— Function Description ——————
54
Ch.1
1.4.5.2 Manual Tuning of the Current Regulator
The manual tuning procedure below, can be used to change the standard response time of current
regulator.
The following procedure is recomended after executing Current Regulator autotune .
Use a 2 channel digital scope.
Connect the probe of the scope, channel 1(CH1), on the XY4/XY5 test points of the regulation card (see Hard-
ware manual, chapter 5.3.1).
Disable the drive: press [O] key (red key) for 2 seconds.
In the
REG PARAMETERS/Test generator
menu set the following parameters:
Test gen mode
=
Magn curr ref
Gen hi ref
=
3000
Gen low ref
=
0
Gen period
=
0.1 s
N
OTE
!
Gen hi ref
value is approximate; it depends on the drive size. The setting must corre-
spond to 20% of the Output current (This value can be verified in the
STATUS
menu).
Enable the drive:
terminal 12 should be active (+24V) and press [I] key (green key). Verify and adjust the step response of the
current regulator looking the leading edge of the
Output current
(see figure: 1.4.5.2.1).
For tuning, follow the steps below:
-
In the
REGULATION PARAM/Curr regulator
menu, adjust the values of CurrP gain % and CurrI
gain % until the response of current is approximatly 1 ms, without overshoot (see figure: 1.4.5.2.2); optimal
response time of current regulator.
-
Disable the drive: press O key (red key) for 2 seconds.
-
Set Test gen mode = Off
-
In the
REG PARAMETERS
menu save the settings done via the
SAVE PARAMETERS
command.
Figure 1.4.5.2.1: Output Current (Reaction Time @ 3ms) Displaying
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