554
Precautions with Connecting Two-wire DC Sensors
Appendix E
Relation between OFF Current of Slave Unit with DC Inputs and
Sensor Leakage Current
I
OFF
≥
I
leak
I
OUT
:
OFF current of a Slave Unit with DC Inputs
I
leak
:
Sensor's leakage current
Connect a bleeder resistor if the Sensor's leakage current is greater than the OFF current of a Slave Unit with
DC Inputs.
The bleeder resistor constant can be calculated using the following equation.
R
≤
(I
OFF
×
R
IN
+ V
F
)/(I
leak
−
V
OFF
)
Power W
≥
(V
CC
−
V
R
)
2
/R
×
4 [allowable margin]
Содержание CRT1 - 10-2008
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Страница 23: ...xxiv Conformance to EC Directives 6...
Страница 51: ...28 Slave Unit Models Section 1 2...
Страница 123: ...100 Connecting External I O for Slave Units Section 3 6...
Страница 365: ...342 Temperature Input Units Section 7 5...
Страница 381: ...358 Expansion Unit Specifications Section 8 2...
Страница 418: ...395 Repeater Unit Section 10 2 Dimensions 42 3 50 3 1 27 5 95 mm...
Страница 419: ...396 Repeater Unit Section 10 2...
Страница 424: ...401 CX Integrator Section 11 1...
Страница 575: ...552 Current Consumption Summary Appendix D 552...
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Страница 583: ...560 Revision History...