Chapter 2. Installation
30
Sentinel LNG User’s Manual
2.4.8 Wiring the Frequency Output
Figure 23 below shows sample wiring diagrams of the frequency/totalizer output circuit for open drain and push-pull
configurations. It is recommended to use 12-24 AWG (3.3 - 0.2 mm
2
) for single conductor wiring, and 16-24 AWG (1.5 -
0.2 mm
2
) for two conductors per terminal.
Figure 23: Totalizer and Frequency Output Wiring
I/O Pin #
Function
F/T1+
Freq 1/Totalizer 1 OUT
F/T1–
Freq 1/Totalizer 1 RTN
F/T2+
Freq 2/Totalizer 2 OUT
F/T2–
Freq 2/Totalizer 2 RTN
NET R (+)
MODBUS–RTU RS232 (R)/RS485 (+)
NET T (–)
MODBUS–RTU RS232 (T)/RS485 (–)
NET COM
MODBUS–RTU Common
OUT
RTN
IN
Common
Load
Volts -
(Common)
Volts +
(Int. Pwr. Sup.)
OUT
RTN
+5V
270
Frequency/Totalizer Output
Counter
Counter
Sentinel LCT
Sentinel LCT
Frequency/Totalizer Output
(Open Drain)
(Push-Pull)
Содержание Sentinel LCT
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Страница 6: ...Preface iv Sentinel LNG User s Manual...
Страница 12: ...Contents x Sentinel LNG User s Manual...
Страница 26: ...Chapter 1 Features and Capabilities Sentinel LNG User s Manual 14...
Страница 178: ...Chapter 5 Using PanaView 166 Sentinel LNG User s Manual...
Страница 184: ...Chapter 6 MODBUS Communications 172 Sentinel LNG User s Manual...
Страница 202: ...Chapter 7 HART Communications 190 Sentinel LNG User s Manual...
Страница 220: ...Chapter 9 Troubleshooting 208 Sentinel LNG User s Manual...
Страница 222: ...Appendix A Menu Maps 210 Sentinel LNG User s Manual...
Страница 230: ...Appendix A Menu Maps Sentinel LNG User s Manual 218...
Страница 232: ...Appendix B CE Mark Compliance and High Noise Areas 220 Sentinel LNG User s Manual...
Страница 236: ...Appendix C Data Records 224 Sentinel LNG User s Manual...
Страница 240: ...Appendix C Service Record 228 Sentinel LNG User s Manual...
Страница 244: ...Index 232 Sentinel LNG User s Manual...
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