FT-111(D) Panel Weighing Indicator, Technical Manual, Rev.1.0.0, May 2019
Page
96
of
146
10 O
PTIONAL
C
OMMUNICATION
10.1 Analogue Output
IMPORTANT NOTE
:
The analogue output cable should be shielded. Connect the shield to the protective
earth as described in the installation section.
FT-111 has analogue output, which is programmable to 4
– 20 mA, 0 – 20 mA, 0 – 5 V or 0 – 10 V. Analog output is
automatically adjusted to the weighing range after the calibration. The mid value of the analogue output is set to zero load at
bipolar usage. The manual analogue output adjustment is available in parameter group 19- .
The analogue output is related with the gross load of the scale. The analogue output signal operates as described next.
Under Zero
When the gross indication drops below zero, the analogue output reduces the
analogue output to 0mA or - 4 V to indicate error on the analogue output.
Normal Range
The analogue output will reflect the gross value to the programmed analogue output
4
– 20 mA, 0 – 20 mA, 0 – 5 V or 0 – 10 V.
Over High Limit
When the gross value exceeds the high limit, the analogue signal increase to
approximately 24 mA or 11 V and remains there until the weight display is no longer
blanked or the analogue signal returns to within range.
The following table indicates the analogue output value when the gross indication is out of the range and if there is any error
indication on the display.
Condition (On Display)
4-20 mA
output
0-20 mA
output
0
– 5 V
output
0
– 10 V
output
The weight is more than the range (
)
24 mA
24 mA
5.5 V
11 V
The weight is under the zero range (
)
0 mA
0 mA
-4.0 V
-4.0 V
Error [ Err XX ]
24 mA
24 mA
5.5 V
11 V
ADC is out of operating range ( LC Err )
24 mA
24 mA
5.5 V
11 V
The error data indicated above can be used to follow the errors at PLC.
