Alarm Description

ERMS Alarm

For MasterPacT NT/NW circuit breakers, the ERMS (Energy Reduction Maintenance Setting) feature is limited. ERMS alarm is compatible from Panel Server only when ERMS application is configured on IO module 1. When the application switch of IO module 1 is set to position 3, you may receive a notification of ERMS activation due to electrical noise on the IO module. It does not necessarily indicate that the ERMS mode is activated. Schneider Electric recommends always confirming by checking the present alarm status from the Panel Server webpages and ERMS status indicator on the MasterPacT NT/NW circuit breaker. For more information, refer to NHA67346 Energy Reduction Maintenance Setting (ERMS) System Installation and User Guide.

Communication Loss

This alarm indicates that the gateway has lost the communication with a wireless device.

The communication loss happens if the gateway has not received packets for a period of time equal to 6 times the communication period of the device.

The alarm will automatically disappear as soon as the wireless device is connected to the RF network.

Voltage Loss

This alarm indicates that the circuit on which a wireless device is installed is no longer under voltage. The cause of the voltage loss can be a manual opening of the circuit, a mains power outage, or a circuit breaker tripping. The wireless device sends the voltage loss alarm to the gateway as soon as it happens, and before being fully de-energized, meaning that the alarm response-time does not depend on the wireless communication period. The alarm will automatically disappear as soon as the wireless device is powered again.

Overcurrent at Voltage Loss

This alarm indicates that an overcurrent occurred during the time of voltage loss. This alarm occurs only if the option is activated. The alarm is managed only if the nominal current or the breaker rating (Ir) of the associated protection device has been set.

DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION OR ARC FLASH Make sure that the cause of the overcurrent is identified and is fixed before closing the circuit. Failure to follow these instructions will result in death or serious injury.

80% of Nominal Current

This alarm indicates that the load current exceeded 80% of the nominal current or exceeded 80% of the associated circuit breaker rating (Ir). On polyphase circuits, the alarm triggers if the current of one of the phases meets the above conditions. The gateway manages the alarms based on the values of the currents sent by the wireless device. The response time of the alarm depends on the communication period set into the Panel Server wireless network (default = 5 seconds). The alarm automatically disappears when the load current remains below the threshold value for 15 minutes.

50% of Nominal Current

This alarm indicates that the load current exceeded 50% of the nominal current or exceeded 50% of the associated circuit breaker rating (Ir). On polyphase circuits, the alarm triggers if the current of one of the phases meets the above conditions. The gateway manages the alarms based on the values of the currents sent by the wireless device. The response time of the alarm depends on the communication period set into the Panel Server wireless network (default = 5 seconds). The alarm automatically disappears when the load current remains below the threshold value for 15 minutes.

45% of Nominal Current

This alarm indicates that the load current exceeded 45% of the nominal current or exceeded 45% of the associated circuit breaker rating (Ir). On polyphase circuits, the alarm triggers if the current of one of the phases meets the above conditions. The gateway manages the alarms based on the values of the currents sent by the wireless device. The response time of the alarm depends on the communication period set into the Panel Server wireless network (default = 5 seconds). The alarm automatically disappears when the load current remains below the threshold value for 15 minutes.

Zero Current

This alarm indicates that the load current value is 0 A. On polyphase circuits, the alarm happens if the current of one of the phases meets the above condition. The gateway manages the alarms based on the values of the currents sent by the wireless device. The response time of the alarm depends on the communication period set into the PowerTag system wireless network (default = 5 seconds). Zero current alarm allows the monitoring of full time running loads. The alarm automatically disappears when the load current is greater than 0 A on all phases.

Undervoltage (80%)

This alarms triggers when a phase-to-neutral voltage or a phase-to-phase voltage falls below the threshold of 80% of the nominal value. The alarm automatically disappears when the voltage remains greater than 88% of the nominal value (a hysteresis of 10% is applied).

Overvoltage (120%)

This alarms triggers when a phase-to-neutral voltage or a phase-to-phase voltage exceeds the threshold of 120% of the nominal value. The alarm automatically disappears when the voltage remains lower than 108% of the nominal value (a hysteresis of 10% is applied).