Appendix
A:
Specifications
85
Discrete Inputs/Outputs
Quantity
up to 4 assignable/selectable
Types
status in, status out, pulse out
Maximum Voltage
± 30 VDC
Status/Pulse Out
Max. on-state current 100 mA
Maximum Pulse Output Rates
64 counts/second @ 50% duty cycle
Status Input Threshold
The following values are the guaranteed limits that the input will be detected as having a changed
state. For example, with a 2.0V selection, the input will be detected as false (off) when the input is
less than 0.5V and on when it is more than 3.5V. In typical operation, the trip transition points are
within 0.5 volts of the nominal threshold. Status input functions are user-assignable for signaling
alarms, controlling valves, interface to counters, etc.
Nominal Threshold
Maximum Low Level Signal
Minimum High Level Signal
2.0V 0.5V 3.5V
7.0V 5.0V 9.0V
10.0V 8.0V 12.0V
Contact In
2 K
Ω
200
K
Ω
Analog Output
The analog output is user-assignable to any rate function (flow rate, temperature, control etc.).
Quantity 1
Types
4-20 mA, optically isolated, externally powered
Maximum Voltage
± 40 VDC
Status/Pulse Out
Max. on-state current 100 mA
Maximum Pulse Output Rates
5 counts/second @ 50% duty cycle
Accuracy
± 0.1% of span max. error @ 25°C (77°F) (after calibration)
Temperature Effect
± 1% of span max. error over temperature
Output Load
R (ohms) = {Supply (volts) – 5.5) / 0.02
Maximum Voltage
± 30 VDC
D/A Resolution
12 Bits
Calibration
Zero and full-scale via software
Settling Time
<100 msec. to 0.1% of full-scale for a 10% step change
Supervisory circuit
On restoring analog loop power, output is 2 mA.
On loss of RTU power, jumper select analog output to go
to minimum level of 2 mA or retain last value.
Содержание NUFLO 1141C
Страница 1: ...Manual No 30165009 Rev 01 NUFLOTM Scanner 1141 RTU Hardware User Manual ...
Страница 19: ...Chapter 3 Main Circuit Board Wiring 19 Figure 2 5 Components of 1141C Figure 2 6 Components of 1141L ...
Страница 28: ...Scanner 1141 Hardware User Manual 28 Figure 3 1 Scanner 1141 main circuit board ...
Страница 39: ...Chapter 3 Main Circuit Board Wiring 39 Wiring Diagram Summary Figure 3 7 Main circuit board wiring summary ...
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Страница 67: ...Chapter 6 Parts List and Order Code 67 Chapter 6 Parts List and Order Code Scanner 1141C ...
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Страница 69: ...Chapter 6 Parts List and Order Code 69 Scanner 1141G ...
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Страница 97: ...Appendix B Control Drawings 97 Drawing 2 Power Supply ...
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Страница 99: ...Appendix B Control Drawings 99 Drawing 4 Status Pulse Inputs Outputs ...
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Страница 101: ...Appendix B Control Drawings 101 Drawing 6 Analog Outputs ...
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