
DISOCONT® Tersus (DT-9) Configuration and Operations Manual
©Schenck Process Group
24
4.4.5 TC: Span Calibration
This operation performs a chain calibration using the values in P10.07 Simulation Travel (Belt Rev.)
and P10.09 Test Chain weight. The results are used to update the following parameter.
•
P10.04 Range Correction TC.
Note:
The calibration results are not saved to the parameter table until the operator accepts them
buy pressing <Apply> in EasyServe, <SAVE> on the (optional) Touch Screen HMI or <ENTER> on
the 196NT display.
Note:
The calibration probes are not used during this operation and do not need to be installed.
Requirements:
•
The weigh span must be level prior calibration. If the weigh roller height has been adjusted, a
complete calibration (Basic (Cal 1) and Span (Cal 2)) must be performed.
•
The feeder must NOT be in volumetric mode.
•
The feeder must be in OFF/Maint mode.
•
The feeder belt must be empty.
•
The calibrated test chains must be installed.
Calibration Procedure:
1) Before starting the calibration, record the value of parameter P10.04 Range Correction TC.
This will be used later to verify that the calibration results are consistent.
2) If the calibration is being performed using EasyServe, navigate to the calibration window
using the
Tools
|
Calibration Programs
menu items. If the (optional) touch screen HMI is
being used, first log in, then go to the calibration display by pressing the <Setup> and
<Calibration> buttons.
3) Select TC: Span Calibration.
4) Initiate the TC: Span Calibration process by pressing the <Start> button in EasyServe or the
(optional) Touch Screen HMI. This process cannot be performed using the 196NT display.
5) The screen will prompt to add the calibration weight (test chain). The top line of the display
will show the value entered in P 10.09 and the bottom line show what the load cells are
measuring based on the current calibration parameters. Press the <Start> button to proceed
with calibration.
6) The feeder will begin to run and go through a stabilization process
o
The motor will run at the value specified in P02.16 Maintenance Speed.
7) After Stabilizing the feeder will run for the number of belt revolutions specified in P10.07.
o
The percentage complete will be displayed on the screen
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