Digital Outputs
Definition
An IO module has three digital outputs (bistable relay). The digital outputs assigned to a predefined application are pre-configured and cannot be modified.
The other available outputs can be configured separately using the EcoStruxure Power Commission software.
Digital Output Contact Type
The outputs used in the user-defined application can be configured as NO or NC contacts:
-
Normally open contact (NO)
-
Normally closed contact (NC)
Digital Output Forcing
For maintenance reasons, it is possible to force the state of the digital outputs.
This action can be performed with:
-
FDM121 display
-
EcoStruxure Power Commission software
Output Operating Mode
The operating mode of the digital outputs is assigned by the EcoStruxure Power Commission software, and can be set to:
-
Non-latching operating mode (factory setting)
-
Latching operating mode
-
Time-delayed operating mode
|
Operating Mode |
Alarm Status |
Output Status |
|---|---|---|
|
Non-latching |
Activated |
Activated |
|
Deactivated |
Deactivated |
|
|
Latching |
Activated |
Activated |
|
Deactivated |
Activate as long as the output has not been acknowledged. |
|
|
Time delayed non-latching |
Activated |
Activated for the time set with the the EcoStruxure Power Commission software. |
|
Deactivated |
Deactivated immediately after time delay set by using the EcoStruxure Power Commission software is over. |
-
If the output contact type is configured as NO (normally open):
-
Status is activated when the output state is HIGH.
-
Status is deactivated when the output state is LOW.
-
-
If the output contact type is configured as NC (normally close):
-
Status is activated when the output state is LOW.
-
Status is deactivated when the output state is HIGH.
-
Digital Output Counters
A counter is linked to each digital output. The counter is incremented for each change in the output.
The digital output counters have the following properties:
-
The counters are saved in non-volatile memory to prevent data loss in case of power loss.
-
The counters can be reset from the IFE or EIFE webpages.
-
The counter stops counting after reaching 4294967294.
-
A threshold is associated to each counter. A threshold can be set to any value from 1 to 429467294. The factory setting is 5000.
-
An alarm is generated when a counter reaches the threshold.
Digital Output Events
The following events are generated by the digital outputs. For more information on IO module events, refer to Events and Alarms.
|
Code IO1 |
Code IO2 |
Description |
Type |
Priority |
Reset |
|---|---|---|---|---|---|
|
1552 (0x0610) |
1808 (0x0710) |
Output 1 rising edge (NO contact) or falling edge (NC contact) |
Event |
NA |
NA |
|
1553 (0x0611) |
1809 (0x0711) |
Output 2 rising edge (NO contact) or falling edge (NC contact) |
Event |
NA |
NA |
|
1554 (0x0612) |
1810 (0x0712) |
Output 3 rising edge (NO contact) or falling edge (NC contact) |
Event |
NA |
NA |
|
1567 (0x061F) |
1823 (0x071F) |
Threshold overrun on output 1 counter |
Alarm |
Medium |
Manual or remote |
|
1568 (0x0620) |
1824 (0x0720) |
Threshold overrun on output 2 counter |
Alarm |
Medium |
Manual or remote |
|
1569 (0x0621) |
1825 (0x0721) |
Threshold overrun on output 3 counter |
Alarm |
Medium |
Manual or remote |
|
1576 (0x0628) |
1832 (0x0728) |
Output 1 not forced or forced change |
Event |
NA |
NA |
|
1577 (0x0629) |
1833 (0x0729) |
Output 2 not forced or forced change |
Event |
NA |
NA |
|
1578 (0x062A) |
1834 (0x072A) |
Output 3 not forced or forced change |
Event |
NA |
NA |
Fallback Positions
The digital bistable relay output is configured to a predefined fallback position after the detection of a specific operating event.
The different fallback positions are:
-
OFF: the relay output turns OFF
-
ON: the relay output turns ON
-
Freeze: the relay output stays in the same position
The fallback position of each digital output is configured using the EcoStruxure Power Commission software.
The fallback position is initiated as soon as the IO module detects one of the specific operating events listed below:
-
IO module watchdog
-
ULP communication interruption
-
24 Vdc power loss
-
Firmware upgrade
For the applications listed in the below table, the fallback position of the digital outputs assigned to the application cannot be modified.
|
Application |
Fallback Position |
|---|---|
|
ERMS |
OFF |
|
Breaker operation |
OFF |
|
Light control |
Freeze |
|
Load control |
OFF |
|
User-defined output |
OFF |