GRAUPNER mz-24 PRO - S.limit - Swashplate Limiter

S.Limit
AdjustableLimitation and Deflection Rotation
This function acts like a circular mechanical fence lim-
iting the maximum possible tilting of the swashplate
for aileron and elevator.
To adjust these settings, from the main display press
the FUNCTION menu gear icon (blue “F”) to bring up
the FUNCTION submenu screen:
000
000
000
000
mz
000%
000%
000
000
BATT TIME 00: 01: 23
Starlet
M - 3
PHASE 1
000:00.0
000:00.0
4.2V
0:01:23
Press
From the FUNCTION submenu display, press the
S.Limit icon:
BACK
SYSTEM
BASE
FUNCTION
Phase
S.Limit
D/R,EXP
THR.CRV
Gyr/Gover
Swash
THR.HOLD
PIT.CRV
S.MIX
THR.MIX
Trainer
Prog.MIX
Logical sw
PIT>>TAIL
Sequence
Press
Swashplate Limiter
The normally square path of a control stick (marked
with a red circle):
S.Limit
BACK
SERVO
DEC
RES
INC
SET
ACT
ROLL
00°
100%
INH
NICK
Swash rotation
000%
000%
Turning the limiter ON in the ACT line limits the max-
imum control stick path to a circular area:
S.Limit
BACK
SERVO
DEC
RES
INC
SET
ACT
ROLL
00°
100%
ON
NICK
Swash rotation
000%
000%
Limiting swashplate movements is important. If the
helicopter is adjusted so that the deflections for roll
and/or elevation exploit the maximum travel mechan-
ically possible (e. g. for 3D helicopters) then the total
tilt applied to the swashplate when full roll and ele-
vation commands are applied simultaneously will be
considerably greater (141% in numerical terms). The
swashplate mechanism may then strike its endstops
and, in the worst case, the ball-heads could be dis-
engaged.
S.Limit
BACK
SERVO
DEC
RES
INC
SET
ACT
ROLL
00°
ON
NICK
Swash rotation
200%
–100%
+100%
The limitation of the overall swashplate deflection
or the swashplate tilt angle can be limited between
100% (deflection has circular limit to the value achiev-
able with roll or elevation) and 200% (no effective lim-
it). Press to highlight the value field in the SET line.
Press the INC or DEC buttons or the arrow keys
( pq ) to increase/decrease the value. The function
can be deactivated by selecting INH in the ACT line.
Press the  RES button to reset the changed value
back to the default.
Swash Rotation
With some rotor head controls, it is necessary to tilt
the swashplate in different direction than the intend-
ed rotor plane angle during cyclical control, i.e. the
point at which the rotor pitch is starting to change is
typically before the point where it actually affects the
model orientation. If a phase angle is added to a the
head, the inputs are then out of line with the desired
movement direction. This can cause banking.
For example, if a four-blade rotor is used, it may be
necessary to turn the actuation 45° to the right or left
so that the control linkage from the swashplate to the
rotor head can be exactly vertical. The blades can
now be controlled without undesirable differentiation,
and the controlling linkage then does not have to be
mechanically changed. Negative angles equate to a
virtual rotation of the rotor head to the left; positive
angles a virtual rotation to the right.
S.Limit
BACK
SERVO
DEC
RES
INC
SET
ACT
ROLL
ON
NICK
Swash rotation
+45°
140%
–099%
+099%
To save and exit, press the BACK button at the top
left of the display to return to the previous menu.
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Function menu | Helicopter model - S. Limiter