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338
Precautions When Connecting Two-wire DC Sensors
Appendix E
Relationship between a DC Input-type Communications Unit’s
OFF Current and a Sensor’s Leakage Current
I
OFF
≥
I
leak
I
OUT
:
OFF current of a Communications Unit with DC Inputs
I
leak
:
Sensor's leakage current
Connect a bleeder resistor if I
leak
is greater than I
OFF
.
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]
Summary of Contents for SmartSlice GRT1-Series
Page 1: ...Slice I O Units Cat No W455 E1 06 SmartSlice GRT1 Series OPERATION MANUAL ...
Page 2: ...SmartSlice GRT1 Series Slice I O Units Operation Manual Revised November 2007 ...
Page 3: ...iv ...
Page 5: ...vi ...
Page 13: ...xiv ...
Page 21: ...xxii EC Directives 6 ...
Page 63: ...42 Connecting Turnback Cables Section 3 3 ...
Page 109: ...88 Digital I O Units Section 4 6 ...
Page 251: ...230 Maintenance Information Window Section 7 3 Maintenance Information Window ...
Page 293: ...272 GRT1 CP1 L Positioning Unit Section 7 5 ...
Page 301: ...280 GRT1 END End Unit Section 8 5 Dimensions 11 9 11 9 55 7 1 5 19 5 83 5 2 9 2 9 OMRON ...
Page 323: ...302 Troubleshooting by Unit Section 9 5 ...
Page 351: ...330 Explicit Messages Appendix A ...
Page 355: ...334 Power Consumption and Weight Tables Appendix C ...
Page 357: ...336 I O Current Consumption Table Appendix D ...
Page 365: ...344 Revision History ...