
Two-wire sensor
I/O connector
V
R
V
CC
R
2
1
3
4
Relation between OFF Current of the IO-Link I/O Hubs and Sensor
Leakage Current
The IO-Link I/O Hubs cannot detect sensor output OFF without the following conditions met:
I
OFF
≥ I
leak
I
OFF
: OFF current to the input of the IO-Link I/O Hub
I
leak
: Sensor leakage current
When I
leak
is greater than I
OFF
, connect a bleeder resistor R.
The bleeder resistor constant can be calculated as follows:
Select an appropriate bleeder resistor R so that both equations can be satisfied.
R ≤ (V
OFF
/ I
OFF
) × V
OFF
/ (I
leak
× (V
OFF
/ I
OFF
) - V
OFF
)
Rated power W of bleeder resistor ≥ (V
CC
- V
R
)
2
/ R × 4 [allowable margin]
V
OFF
: OFF voltage at the input of the IO-Link I/O Hub
Appendices
A-4
NXR-series IO-Link I/O Hub User’s Manual (W620)
Содержание NXR Series
Страница 6: ...Manual Structure 4 NXR series IO Link I O Hub User s Manual W620 ...
Страница 26: ...Revision History 24 NXR series IO Link I O Hub User s Manual W620 ...
Страница 34: ...1 Features and System Configuration 1 8 NXR series IO Link I O Hub User s Manual W620 ...
Страница 90: ...6 Process Data and Service Data 6 12 NXR series IO Link I O Hub User s Manual W620 ...
Страница 108: ...7 Functions of IO Link I O Hubs 7 18 NXR series IO Link I O Hub User s Manual W620 ...
Страница 131: ...I Index I 1 NXR series IO Link I O Hub User s Manual W620 I ...
Страница 133: ......