
Chapter 4
70
Connecting Current Loop Inputs
shows how to connect a current loop input to the DT740 screw terminal panel,
shows how to connect a current loop input to the STP268 screw terminal panel, and
shows how to connect a current loop input to the STP268-EC screw terminal panel.
Figure 22: Connecting Current Inputs to the DT740 (Shown for Channel 0)
Figure 23: Connecting Current Inputs to the STP268 (Shown for Channel 0)
DT740 Panel
TB1
Analog Input 0
Analog Input 0
Return
TB2
+
-
TB50
Analog Shield
Use current shunt resistor R17 to convert current
to voltage; 250
Ω
for 4 to 20 mA = 1 to 5 V. The
common side of the external loop supply must
either connect to analog ground or, if needed, to a
bias return resistor (R1 in this case).
4 to 20 mA
+V
CC
R1
R17
TB51
Analog Ground
STP268 Panel
TB1
Analog Input 0
Analog Input 0
Return
TB2
+
-
TB34
Use current shunt resistor R17 to convert current to voltage;
250
Ω
for 4 to 20 mA = 1 to 5 V. The common side of the
external loop supply must either connect to analog ground or,
if needed, to a bias return resistor (R1 in this case).
4 to 20 mA
+V
CC
R1
R17
Analog Ground
Note that the signals shown for the STP268 screw terminal
panel correspond to connector J1.
Содержание Data Translation DT3010 Series
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Страница 15: ...About this Manual 14 ...
Страница 16: ...15 1 Overview Features 16 Supported Software 18 Accessories 19 Getting Started Procedure 21 ...
Страница 23: ...Chapter 1 22 ...
Страница 24: ...Part 1 Getting Started ...
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Страница 37: ...Chapter 2 36 ...
Страница 49: ...Chapter 3 48 ...
Страница 91: ...Chapter 4 90 ...
Страница 102: ...Part 2 Using Your Board ...
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Страница 147: ...Chapter 6 146 ...
Страница 159: ...Chapter 7 158 ...
Страница 160: ...159 8 Calibration Calibrating the Analog Input Subsystem 161 Calibrating the Analog Output Subsystem 169 ...
Страница 176: ...175 9 Troubleshooting General Checklist 176 Technical Support 178 If Your Board Needs Factory Service 179 ...
Страница 181: ...Chapter 9 180 ...
Страница 193: ...Appendix A 192 ...
Страница 213: ...Appendix B 212 ...
Страница 231: ...Index 230 ...