Yamato PPC-300, Техническое руководство

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YCO-1126-01-08
PPC-300 & PPC-300D Technical Manual
Calibrate the Scale
Calibration can be done with pound or kilogram weights. Pound weights are the default setup, but this
can be changed through factory parameter 50 (see section IV Setup, Factory Mode.) A three point cali-
bration is also the default setup, but two and four point calibrations can be selected when beginning the
calibration using the
key. Two point calibration is not recommended, since it is less accurate than
three or four point calibration. Press the key to exit calibration mode and return to test mode.
1. With the scale in test mode, displaying internal counts, and on its
feet, place the platform back in place with the recess for the load
cell screws aligned over the screws. The platform will wobble if it
is placed on the scale 180 degrees out of alignment. Do not place
weights on the scale platform if it is not steady.
2. Press + (see note) to enter calibration mode. Press the
key if you want to change the number of calibration points. Ensure
there is nothing on the platform, then press the
key while the
stable indicator is displayed.
3. For three point calibration, place one half of the scale's full capacity
on the platform. Press the key while the stable indicator is dis-
played.
4. Place the scale's full capacity on the platform. Press the key
while the stable indicator is displayed.
5. The scale should briefly display an 'F' followed by either 20000, 22000
or 30000 counts (depending on the scale capacity and on whether
calibration was done with pound or kilogram weights.) The calibra-
tion was successful if the reading is /- 3 counts of the target
number. Press the
key for a few seconds to turn the scale off and
exit test mode.
6. If the scale displays error 103 the scale is either misconfigured, incor -
rect weights were use for the calibration, or the scale may be dam-
aged. Check that the weights are one half of capacity, and full capac-
ity. If the weights are correct, check the scale configuration using
section IV Setup, Default Parameter Tables. If the setup is correct,
follow the steps in section V Troubleshooting.
A four point calibration would use weights for one third of full capacity, two
thirds of full capacity, and full capacity. A two point calibration would only
use weights for full capacity. Two point calibration does not perform any
linearity corrections, making it less accurate.
Note: Two key icons joined by a plus sign ( + ) means to press and hold the first key, press the
second key, and then release both keys.
III Calibration
8