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Transcript
Installation inputs. The counter is shown as a millivolt input with a direct connection to a turbine meter sensor. J 9 and J11 are in the internal turbine meter amplifier or top positions. The use of shielded wiring and that the shield is connected at one end only. When connecting to a turbine meter amplifier the manufacturer may have a specific current requirement to power the pre-amplifier. The SCADAPack 100 does not include the necessary resistor for this application. J11 jumper would be removed. Wire the amplifier as per the manufacturers recommendations with an external resistor. The counter can be used with conventional sources such as open collector transistors and contacts. The SCADAPack 100 includes a 4700-ohm resistor from the counter input to the DC input power source. This resistor can be used when the SCADAPack 100 is powered from 12 or 24V. Both J9 and J11 would be in the Dry Contact or top positions. A wiring example showing an open collector transistor is shown in Figure 3: Digital Input/Output and Counter Wiring. Example jumper settings are shown below. J9. Turbine meter sensor uses internal amplifier. J11. Turbine meter sensor uses internal amplifier. J9. Open collector, dry contact or turbine meter with external amplifier. J11. Open collector or dry contact. Internal pullup resistor is used. J11. Open collector, dry contact or turbine meter with external amplifier. User must supply external resistor from input to suitable power source. Document (Version 2.24.1.84) 5/19/2011 17