Omron DRT2 SERIES DEVICENET SLAVES - OPERATION MANUAL 04-2008 Operation Manual page 589

Precautions with Connecting Two-wire DC Sensors
Relation between OFF Current of Slave with Transistor Inputs
and Sensor Leakage Current
≥ I
I
OFF leak
I : OFF current of a Slave with Transistor Inputs
OUT
I : Sensor's leakage current
leak
Connect a bleeder resistor if I
The bleeder resistor constant can be calculated using the following equation.
R ≤ (I × R
+ V )/(I
OFF IN F leak
Power W ≥ (V − V 2
)
CC R
568
is greater than I
leak
− V
)
OFF
/R × 4 [allowable margin]
.
OFF
Appendix F