EMC INDUSTRIAL GROUP LTD Inputs
MW93A_IM_ALL_SV6.09f_en 32/59
Inputs
Basic Settings
Inputs Internal Signals Outputs
Communications & Display
Information, Resets & Final Calibration
Digital inputs
The following settings select the function of the digital inputs. The hint line shows (off) when there is
no voltage present, and (on) when voltage is applied to the input.
The UP and DOWN keys can be used to select the function from the available list.
The list is shown in the Instruction Manual in the ‘I/O Function Table’.
Q2211 IN1 function
(& state)
7
8170, g3
8
hold control=9
Q2212 IN2 function (& state) 8172, g3 acquire zero=16
Q2213 IN3 function (& state) 8174, g3 run=2
Q2214 IN4 function (& state) 8176, g3 reset total=32
Q2215 IN5 function (& state) 8178, g3 print=40
Q2216 IN6 function (& state) 8180, g3 print total=41
Q2217 IN7 function (& state) 8182, g3 run=2
Q2218 IN8 function (& state) 8184, g3 pause=3
Q2219 IN9 function (& state) 8186, g3 acquire zero=16
Q2210 IN0 function (& state) 8190, g3 no function=0
Loadcell input (vessel weight)
Input settings
Q22311 AI1 response time [0.04 to 32] 8120, g1 0.50 s
The response time for the weight signal. A larger value will help reduce variations in the weight reading
caused by vibrations or movement on the weighing system.
Q22312 lever ratio 8130, g1 1.0000
The lever ratio adjusts the weight reading during calibration. It is the ratio of calibration weight (test
weight) to displayed weight (gross weight).
Q22313 4 or 6 wire connection 8128, g1 auto=0
Selects if the loadcell has a 4 wire or 6 wire connection to the instrument. If set to auto, it will power up
in 6 wire mode, but switch to 4 wire mode if there is no sense voltage detected.
Q22314 loadcell scan 8168, g7 0
Set to 0 for normal operation. Selects the number of loadcells to be individually measured. Loadcell in-
puts P, Q, R, and S are multiplexed, measuring each one for the ‘AI response time’. The individual sig-
nals are saved in ‘AI1 signal P, Q, R & S’. The average signal is saved in ‘AI signal’.
Calibration with weights
The basic procedure is to remove all weight from the weighing system and set the zero setting to 0.
Then a known weight is applied to the weighing system and the span setting adjusted to this weight.
* Q22321 AI1 zero (remove all weight & set to zero) 8910
9
(shows weight) kg,t,g
* Q22322 AI1 span (apply weight & enter weight value) 8912
9
(shows weight) kg,t,g
Calibrate loadcell
This is often the easiest method of calibration. It is useful to detect problems with the weighing mecha-
nism which may not otherwise be shown using other calibration methods. It is also a quick method
which can be used at anytime to check the loadcell and weighing system.
1. Press the Q key to access the setup menu.
2. Key in the quick key code 22321 to select the ‘AI1 zero’ step.
3. Make sure all material and test weights are removed from the weighing system.
4. Press the EDIT key. (If editing is locked, key in the password 111 and press ENTER).
5. Press the 0 key followed by ENTER and wait while the display shows ‘Calibrating, please
wait…’
6. Press ENTER twice to move to the ‘AI1 span’ step. (Or press the DOWN key).
7. Apply the known test weight.
7
Hint line shows state as (on) or (off)
8
See I/O Function Table page 52. Use negative numbers to reverse the signal sense eg 1=stop (stop when input is on), -1=NOT stop
(stop when input is off).
9
Entering a value initiates a calibration.
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