Programming LOCON 7 and LOCON 9
Deutschmann Automation GmbH & Co. KG
34
Instruction manual LOCON 7, LOCON 9 V. 10.4
24.5.04
7.12 Teach-in programming
Instead of a manual programming of the switch-on- and switch-off values it is also possible to
use the teach-in-procedure.
Teach-in-procedure means that the machine is run at the switch-on point at first, the adequate
encoder value is taken over from LOCON, and then the same procedure is carried out at the
switch-off point, but the operator does not have to or input the real encoder value.
Whenever a value must be input, that is obvious if the LEDs "Prg.Mode" and "On" or "Off" are
flashing, the actual encoder value can be taken over instead by pressing the keys
and
at the same time.
The actual encoder value is displayed, which can be corrected however, if required.
The further procedure is the same as programming or changing cams.
7.13 Shifting all cams on one output
If all cams of one output are to be shifted by a certain number of increments, at first the desired
output has to be brought on the display, as described in chapter "The program change is also
carried out in the normal mode. The command by hardware, however, is always identified and
saved in case LOCON is not in the normal mode that moment.".
After that by pressing the key
(long) it is changed into the "shift mode".
Only the LED "Zero" flashes and "000" appears on the display.
Now the increments, by which all cams are to be shifted, can be set with the keys
and
.
If the cam switching points should be changed to a lower value it is necessary to add the encoder
resolution to the value which is to be shifted, as a negative input is not possible. This value has to
be input.
If for instance the switching points should be set earlier with 10 increments and if a 360-inc.-
encoder is connected, this is achieved by entering 350 (360 - 10).
The autorepeat-function is supported as usual.
If the right value is adjusted, the real shift of the cams can be started with
or it can be
rejected with
, that automatically leads back to the display mode in any case.
7.14 Idle time compensation (LOCON 9 only)
Idle time is defined as the time that passes from putting a cam control-output to the real reaction
of the connected instrument (e. g. opening a valve).
This idle time is normally fixed.
To compensate this idle time dynamically, a cam control must shift a programmed cam in depen-
dence on the real encoder speed; i. e. a valve that should open at the position 100, must be
opened for example at 1m/s at position 95, at 2m/s already at position 90.
This function is called dynamic cam shift or idle time compensation (ITC).
MODE
ESC