YOKOGAWA YewSeries 80, Руководство пользователя

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4-3
IM 01B04K02-02E
Principles of Operation
1
2
3
App
1
2
3
5
6
7
8
4
4.2.1 Input Processing Functions
The following process is performed for each input.
F0403.ai
Input signal
PV1
Scaling
Bias
Input rage
Normalization
A/D conversion
RH1
RL1
SCH1
SCL1
DP
BIAS1
RTD
Burnout
BURN OUT
BURN OUT
UNIT1
Reference junction
compensation
Linearize
RJC
RJC CONST
Burnout
Temperature
unit conversion
Thermocouple
mVDC
Thermocouple, RTD
Figure 4-3 Input Processing Function Block Diagram
The alphabet codes in the figure are the names of BRAIN communication parameters.
● Explanation of Input processing block
• A/D conversion: Performs A/D conversion on input signals.
• Normalization:
Calculates the value required for each of input.
• Burnout:
SALD-xx0: Action (UP/DOWN/OFF) can be set by parameter.
SALD-xx4: Action (UP/DOWN/OFF) can be set using setting jumper on the main
board.
• Temperature unit conversion:
When input signal is thermocouple or RTD, temperature unit (°C or K) can be set.
• Input range:
When input signal is mV DC, input range can be set (See Scaling below.)
• Scaling:
When input signal is mV DC, scaling is possible for the range set at input range.
The value after scaling (or, when the bias function is used, the value obtained by
adding bias to this value) becomes PV1.
4.2 Description of Functions