Torque Limit Function, Al Mode (Automatic Limiter); Torque Limit Function, As Mode (Automatic Stopper); Handpiece; Storing Various Programs - Nouvag MD11 Bedienungsanleitung

7.5

Torque limit function, AL mode (Automatic Limiter)

The AL function limits the torque applied to the instrument, for example to prevent crack initiation and
bone fracture.
The speed at the instrument remains constant until the preset torque is reached. If the applied force gets
over this limit the speed will be reduced, if necessary down to a stop, but the torque remains constant. If
the applied force is reduced the speed picks up again.
On the display this procedure is shown as a bar graph. The bars in the graph fill up to their full range as the
torque increases to its preset value. When the bar graph shows full capacity the speed will be reduced. As
soon as the force on the instrument is reduced the torque decreases and the speed starts to pick up again
as shown on the display.
The AL mode is active at all speeds, except at the speeds where the AS mode takes effect.
7.6

Torque limit function, AS mode (Automatic Stopper)

The AS function limits the torque applied to the instrument. As soon as the preconfigured torque is
reached, the electronic motor stops immediately. The electronic motor no longer generates any force. In
order to restart the electronic motor, the treadplate must be released and pressed again.
On the display, the bar graph completes up to its full range, until the maximum torque is reached, then
drops to zero.
The function "AS" is just active for certain contra angles
and only in a certain speed range.
From the minimal speed up to the speeds shown at the
right the AS-mode is activated automatically.
(refer to "7.8 Configuration Menu, Parameter level 2, AS-Zone")
The upper limit of the AS range can be adjusted in the configuration menu.
In the following speed ranges the AS-/AL-mode can also
be switched manually by pressing both torque keys
"Torque ▲ + ▼" at the same time.
7.7

Storing various programs

With the MD 11, up to 6 different settings can be set as fixed program (program 1 to program 6). Which
program is currently active is shown on the display.
At switch-off, the settings made by user are automatically saved. This includes the following parameters:
• Handpiece/Transmission ratio
• Maximal speed
• Maximal torque
In the configuration menu the number of available programs can be set from 2 to 6 (refer to "7.8
configuration menu/number of programs").
To change a program go to the specific parameter and change it. When the device is switched off all
parameters are saved in that program.
When the MD 11 is switched on, the display shows the prior used program with the prior used handpiece or
contra angle.
16

Handpiece

Speed rpm:
Handpiece
From rpm:
To rpm:
• Pump On/Off
• Pump performance
• AS/AL mode
MD 11, V2.0, Operating Instructions, REF 31665, V22/17
MD 11
16:1 20:1 32:1 70:1
20 20 20 20
16:1 20:1 32:1 70:1
20 15 10 5
45 45 45 45