Simex SWI-94, Руководство пользователя

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User manual - WEIGHT METER SWI-94
8. OUTPUT VALUE CALCULATION
Lets assume that we have active current output and its parameters are:
“modE”
=
“on”
,
“OUt LO”
= 100,
“OUt HI”
= 200,
“Lo r”
= 5.0,
“Hi r”
= 5.0
Parameters
“Lo r”
and
“Hi r”
define working range of current output to 3,8 ÷ 21 mA.
Output current will be calculated for three displayed values „D”:
a) D = „17.5”
According to formula from page
35
:
I
out
= (17.5-10.0) / (20.0-10.0) × 16 mA + 4 mA = 0.75 ·16 + 4 = 16 mA
Calculated I
out
do not exceeds the output working range (3 - 21 mA).
b) D = „20.5”
According to formula from page
35
:
I
out
= (20.5-10.0) / (20.0-10.0) × 16 mA + 4 mA = 1.05 ·16 + 4 = 20.08 mA
Calculated I
out
do not exceeds the output working range (3 - 21 mA).
c) D = „30.0”
According to formula from page
35
:
I
out
= (30.0-10.0) / (20.0-10.0) × 16 mA + 4 mA = 2 ·16 + 4 = 36 mA.
Calculated I
out
exceeds the output working range (3 - 21 mA), so current output will generate
current equal to the upper border of range defined by parameter “Lo r” and “Hi r” (it means
21 mA).
9. SIGNALISATION OF ERRORS
Some critical situations are signalised in texts or numbers format (like „
Err NN
”), where
NN denotes error number and can be one of values presented below:
NN Description Meaning
16 “ ErrC ” Dead weight calibration error
68 “Short ”
Shortcut on input or resultant impedance of input load cell(s)
(tensometer sensor) is to low
70 “ OPEn ” Break of input circuit or incorrect input voltage level
72 “OvEr V”
Exceeding of input voltage permissible range or connectors
30...35 of the tensometer sensor are not connected
73 “OvEr C”
Exceeding of current source maximum load (tensometer
sensor overloads measurement input)
74 “tr Err”
Converter (transducer) error – contact with manufacturer's
service
75 “no rEF” No reference voltage or incorrect input voltage level
96 “Lo” Exceeding of measurement range lower border
160 “Hi” Exceeding of measurement range upper border
- “mZ Err” Manual Zeroing error (function cannot be done)
- “mt Err” Manual Tare error (function cannot be done)
- “-OvEr-” measured value exceeds the display range (-99999 ÷ 999999)
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