SMAR FI303, Руководство по эксплуатации, техническому обслуживанию и инструкциям

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FI303 - Operation and Maintenance Instruction Manual
3.2
It starts at one channel (1) for transducer number one until channel three (3) for transducer number
three.
The channel number of the AO block is related to the transducer’s terminal number. Channel
number 1, 2, 3 corresponds bi-univocally to the terminal block with the same number. Therefore, all
the user has to do is to select combinations: (1.1), (2.2), (3.3) for (CHANNEL, BLOCK).
Functional Diagram of the Profibus PA to Current Transducer Block
T
e
r
m
i
n
a
l
s
1
2
3
g
TERMINAL_NUMBER
[1,2 or 3]
EU 0%
EU 100% 100%
0%
OUTPUT_SCALE:
EU 0% and EU
100%
LINEARIZATION
CURVE Parameters
LINEARIZA-
TION CURVE
LIN_TYPE
[no linear., linear
table
From: ANALOG OUTPUT: CHANNEL
H
A
R
D
W
A
R
E
% %
CURRENT VALUE
In mA
STATUS
PROCESSING
FEEDBACK_VALUE
To Analog Output
Block: READBACK
Calibration Procedures based on
Manufacturer-Specific and
CAL_POINT_HI,
CAL_POINT_LO and
CAL_MIN_SPAN parameters
EU 0%
EU 100%
FINAL VALUE
SCALE
EU 0% and EU 100%
100
%
0%
mA
CURRENT
TRIM
=> FINAL_VALUE
Figure 3.1 - Functional Diagram of the Profibus PA to Current Transducer Block
PROFIBUS to Current Converter Transducer Block - Parameters Description
PARAMETERS DESCRIPTION
FINAL_VALUE
The actual value variable for the final control element in units of OUT_SCALE. Status
BAD will indicate a hardware problem.
FINAL_VALUE_SCALE
This is the output conversion of the linearisated value using the high and low scale.
The engineering unit is mA (1211).
CAL_POINT_HI
This parameter contains the highest calibrated value. This parameter indicates where
the converter should be when the setpoint is 100%. The engineering unit used by this
calibration is mA.
CAL_POINT_LO
This parameter contains the lowest calibrated value. This parameter indicates where
the converter should be when the setpoint is 0%. The engineering unit used by
calibration is mA.
CAL_MIN_SPAN
This parameter contains the minimum calibration span value allowed. This minimum
span information is necessary to ensure that when calibration is done, the two
calibrated points (high and low) are not too close together. The engineering unit used
by calibration is mA.
CONVERTER_SER_NUM This parameter contains the converter serial number.
CONVERTER_MAN Name of converter-manufacturer
CONVERTER_MAINT_DATE The date of last maintenance.
FEEDBACK_VALUE The actual final value of the final control element in units of OUT_SCALE.
TERMINAL_NUMBER
The terminal number, which references a channel value, which is sent via internal,
manufacturer-specific from AO function block to the specified transducer. It starts at
one (1) for transducer number one until three (3) for transducer number three.