Ogden ETR-8300, Инструкция по эксплуатации

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4 9 Analog Retransmission 4 9 Analog Retransmission
The Analog Retransmission is available for model number ETR-8300-XXXXXXN
Where N 3,4 or 5. See Ordering Code in
= section 1-2.
The Analog Retransmission is available for model number ETR-8300-XXXXXXN
Where N 3,4 or 5. See Ordering Code in
= section 1-2.
Setup
Select FULL for FUNC in the setup menu.
COMM selects the correct output signal which should be accordant with the
retransmission option used. Five types of retransmission output are available.
These are : 4-20 mA, 0-20mA, 0-5V, 1-5V and 0-10V. There are 8 types of
parameters that can be retransmitted according to the Analog Function ( AOFN )
selected. These are : PV1, PV2, PV1 PV2, PV2 PV1, SV, MV1, MV2 and PV
SV. Refer to
for a complete description. AOLO selects a value
corresponding to output zero and AOHI selects a value corresponding to
output SPAN.
Table 1.4
Select FULL for FUNC in the setup menu.
COMM selects the correct output signal which should be accordant with the
retransmission option used. Five types of retransmission output are available.
These are : 4-20 mA, 0-20mA, 0-5V, 1-5V and 0-10V. There are 8 types of
parameters that can be retransmitted according to the Analog Function ( AOFN )
selected. These are : PV1, PV2, PV1 PV2, PV2 PV1, SV, MV1, MV2 and PV
SV. Refer to
for a complete description. AOLO selects a value
corresponding to output zero and AOHI selects a value corresponding to
output SPAN.
Table 1.4
Setup Menu Setup Menu
FUNC
COMM
AOFN
AOLO
AOHI
FUNC
COMM
AOFN
AOLO
AOHI
Terminals
13
14
AO+ AO+
AO
How to Determine Output Signal: How to Determine Output Signal:
AOLO and AOHI are set to proportion the output signal LOW SL (e.g. 4mA)
and output signal High SH (e.g. 20mA) respectively. The analog output signal
AOS corresponding to an arbitrary value of parameter AOV is determined by
the following curve. AOLO and AOHI are set to proportion the output signal LOW SL (e.g. 4mA)
and output signal High SH (e.g. 20mA) respectively. The analog output signal
AOS corresponding to an arbitrary value of parameter AOV is determined by
the following curve.
Parameter Value Parameter Value
Output
Signal Output
Signal
SH
AOS
SL
AOLO AOV AOHI
Figure 4.6
Conversion Curve
for Retransmission Figure 4.6
Conversion Curve
for Retransmission
Formula:
AOS=SL ( AOV AOLO ) + AOS=SL ( AOV AOLO ) +
SH SL SH SL
AOHI AOLO AOHI AOLO
AOV=AOLO ( AOS SL ) + AOV=AOLO ( AOS SL ) +
SH SL SH SL
AOHI AOLO AOHI AOLO
Notes:
Example
NOTES
The setup values used for AOHI and AOLO must not be equal. However,
AOHI can be set either higher or lower than AOLO. If AOHI is set higher than
AOLO it could result in a direct conversion. If AOHI is set lower than AOLO it
could result in a reverse conversion. The setup values used for AOHI and AOLO must not be equal. However,
AOHI can be set either higher or lower than AOLO. If AOHI is set higher than
AOLO it could result in a direct conversion. If AOHI is set lower than AOLO it
could result in a reverse conversion.
AOHI AOLO:
Reverse Conversion < AOHI AOLO:
Reverse Conversion <
AOHI AOLO
AOHI AOLO:
Direct Conversion =
> AOHI AOLO
AOHI AOLO:
Direct Conversion =
>
A control uses 4-20 mA analog output to retransmit the difference value
between input 1 and input 2 ( Pv1 PV2 ). It is required that if the difference
value is -100, 4mA will be exported, and if the difference value is 100, 20mA
will be exported. Make the following Setup for ETR-8300:
IN1U PU, DP1 NODP, IN2U PU, DP2 NODP, FUNC FULL, COMM 4-20,
AOFN P1-2, AOLO -100, AOHI 100
= = = = = =
= = =
A control uses 4-20 mA analog output to retransmit the difference value
between input 1 and input 2 ( Pv1 PV2 ). It is required that if the difference
value is -100, 4mA will be exported, and if the difference value is 100, 20mA
will be exported. Make the following Setup for ETR-8300:
IN1U PU, DP1 NODP, IN2U PU, DP2 NODP, FUNC FULL, COMM 4-20,
AOFN P1-2, AOLO -100, AOHI 100
= = = = = =
= = =