Fallback Settings Mode

Presentation

The fallback settings mode is a protection mode. It allows the standard protection functions of the circuit breaker to be maintained with fallback settings values in case of detection of one of the following events:

Unable to read sensor plug (code 0x1409)
Internal Current Power Supply (CPS) sensors malfunction. Tsd forced to 0. (code 0x1510)

Availability

The fallback settings mode is available on:

MicroLogic 2.0 X, 5.0 X, 6.0 X, and 7.0 X control units for IEC standard
MicroLogic 3.0 X, 5.0 X and 6.0 X control units for UL standard

Operating Principle

The fallback setting mode is activated automatically after detection of the following events:

Code	Event	Fallback settings
0x1409 (5129)	Unable to read sensor plug	The settings of the standard protection functions of active trip curve are replaced by fallback settings. Follow the recommended actions related to the event to come back to normal mode with application of the original active settings.
0x1510 (5392)	Internal Current Power Supply (CPS) sensors malfunction. Tsd forced to 0.	Only the short-time protection parameters of active trip curve are replaced by fallback settings: Tsd is forced to 0 and I²t to OFF. The other protection settings set by the user remain unchanged. Contact your Schneider Electric Services representative to replace the circuit breaker.

Code

Event

Fallback settings

0x1409 (5129)

Unable to read sensor plug

The settings of the standard protection functions of active trip curve are replaced by fallback settings.

Follow the recommended actions related to the event to come back to normal mode with application of the original active settings.

0x1510 (5392)

Internal Current Power Supply (CPS) sensors malfunction. Tsd forced to 0.

Only the short-time protection parameters of active trip curve are replaced by fallback settings: Tsd is forced to 0 and I²t to OFF. The other protection settings set by the user remain unchanged.

Contact your Schneider Electric Services representative to replace the circuit breaker.

When the fallback settings mode is active, only the active trip curve is replaced by fallback settings to maintain the protection efficiency. The fallback settings are fixed and cannot be modified.

NOTE: If the settings of active trip curve are the same as the fallback settings, the settings of active trip curve remain unchanged and the fallback settings mode is not active.

NOTICE
HAZARD OF UNINTENDED OPERATION When the fallback setting mode is active: Do not change the protection settings. Do not engage/disengage ERMS. Do not switch the set of protection settings Set A and Set B. Failure to follow these instructions can result in unintended operation.

When the fallback settings mode is active, the event 0x142F (5167) Last modification of protection settings has not been completely applied is generated.

Fallback Settings Mode Indication

When the fallback setting mode is active:

Fallback settings mode is displayed on the Trip curve screen of the Quick View.
EcoStruxure Power Commission software and EcoStruxure Power Device App display Fallback settings mode on the active trip curve screen.