Flag Calculation MANUAL or AUTO?
AUTO flag selected
So you picked MANUAL
Digital Flag Home
Testing and Maintenance
Select AUTO here unless you are an MFR wizard. This lets you pick flag
length which automatic adjusts the spacing between flags and start
positions. In MANUAL MODE the operator enters the start position of
each flag. The instrument will not perform any flag boundary or cross over
checking. Dynisco Polymer Test recommends a START position of 0.5
mm and a
STOP position not to exceed 30.0 mm. In AUTO MODE, the operator enters the
data collection START and STOP plunger positions (105 mm - 230 mm). The
instrument will then calculate all positions, flag lengths and flag separation
lengths (equal to 25% of the flag length). The instrument will perform flag
boundary crossover checking. Flag length will be decreased automatically until
all the requested numbers of flags fit between the START and STOP positions.
Minimum flag length is 1 mm.
Now that AUTO flag has been selected, enter the number of flags (Data points
collect for this loading of the barrel) and the flag length, press ENTER. Edit
the next parameter or quit edit mode and save program.
Enter the number of flags in the next prompt, 1 to 15, and press ENTER.
Select the length of the flags and press ENTER.
The next prompt will say “# ENCODER FLAGS NOT INITIALIZED”. This
means that you must enter start positions for each flag. Press EDIT an enter
start position for flag 1, press NEXT for flag 2 and so on. The instrument will
suggest positions for you, but you don’t have to accept them. EXIT when
finished editing. Dynisco Polymer Test recommends 1mm minimum flag
spaces.
Encoder Homing and Maintenance
Calibration: Digital Flag Home The Digital Encoder is calibrated at Dynisco
Polymer Test prior to shipment. Because the arm is locked into place,
calibration is rarely required.
The instrument does allow you to reset the home position of the encoder.
If calibration needs to be checked due to suspected encoder damage, then
contact Dynisco Polymer Test for assistance and the necessary tool kit.
Calibration Steps:
1. Press the SYS key and select CAL. Browse the menu and select
Digital Flag Home. The instrument prompts you to place the encoder
arm in the home position. This is the down most position that the flag
arm can go into.
2. Place the encoder arm in the down most position and press RESET
to set the encoder count to 105.00 mm at the top home position. Press
QUIT to end procedure. ESC out to main menu.
The encoder should now be set to the proper encoder settings. A digital
micrometer mounted in a special fixture is available from the factory to check
and verify accuracy of the encoder unit. Please contact your sales representative
and refer to part number 7051-59.
TEST: Digital Flag Position The instrument allows you to test the position of
the encoder arm. This procedure verifies the circuitry is working and can be
used to test calibration.
Test Steps:
Series 4000 Melt Indexer Operation Manual The Digital Encoder: Use and Calibration
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