Operation of SDx and SDTAM Module Outputs Assigned to Alarms

Presentation

The two outputs on the SDx module can be assigned to two alarms by using EcoStruxure Power Commission software. They are activated (or deactivated) by the occurrence (or completion) of:

• An alarm associated with a measurement.

• An alarm on a trip, failure, and maintenance event.

The two outputs on the SDTAM module for motor-feeder applications cannot be configured:

• Output 1 is assigned to motor thermal fault indication

• Output 2 is used to open the contactor

For more information on the SDx and SDTAM modules, refer to DOCA0140EN ComPact NSX - Circuit Breakers and Switch-Disconnectors 100–630 A - User Guide.

Assignment of the SDx Module Outputs

All alarms on a trip, failure, and maintenance event, and all alarms associated with a measurement can be assigned to an SDx module output.

The factory setting for the SDx module output assignment depends on the type of MicroLogic trip unit installed on the module.

Both outputs are assigned by default as follows:

• MicroLogic 5 trip unit:

  • Output 1 is the thermal fault indication (SDT).

  • Output 2 is the long-time pre-alarm (PAL Ir).

• MicroLogic 6 trip unit:

  • Output 1 is the thermal fault indication (SDT) for electrical distribution applications.

    Output 1 is None for motor-feeder applications.

  • Output 2 is the ground-fault indication (SDG).

• MicroLogic 7 trip unit with integrated earth-leakage protection:

  • Output 1 is the thermal fault indication (SDT).

  • Output 2 is the earth-leakage indication (SDV).

SDx Module Output Operating Modes

Set the operating mode for the SDx module outputs as:

• Non-latching

• Latching

• Time-delayed non-latching

• Closed forced

• Open forced

Operation in Non-Latching Mode

The output (S) position follows the associated alarm (A) transitions.

A Alarm: Green when activated, white when deactivated

S Output: High position = activated, Low position = deactivated

1 Alarm activation transition

2 Alarm deactivation transition

Operation in Latching Mode

The position of the output (S) follows the active transition of the associated alarm (A) and remains latched irrespective of the alarm state.

A Alarm: Green when activated, white when deactivated

S Output: High position = activated, Low position = deactivated

1 Alarm activation transition

2 Alarm deactivation transition

Operation in Time-Delayed Non-Latching Mode

The output (S) follows the activation transition for the associated alarm (A). The output returns to the deactivated position after a time delay irrespective of the alarm state.

A Alarm: Green when activated, white when deactivated

S Output: High position = activated, Low position = deactivated

1 Alarm activation transition

2 Alarm deactivation transition

The setting range for the time delay is 1–360 s. The default time delay setting is 5 s. Set the time delay by using EcoStruxure Power Commission software.

Operation in Open or Closed Forced Mode

In Open forced mode, the output remains in the deactivated position irrespective of the alarm state.

In Closed forced mode, the output remains in the activated position irrespective of the alarm state.

Acknowledgment of Latching Mode

Acknowledge the latching mode using the MicroLogic trip unit keypad by pressing the key twice.

A Alarm: Green when activated, white when deactivated

S Output: High position = activated, Low position = deactivated

Special Features of Latching Mode

If the acknowledge request is made when the alarm is still active:

• Acknowledgment of the output active position has no effect.

• Keypad navigation is possible.

• The screensaver returns to the Out1 message.

If the two alarms associated with the two outputs in latching mode are active:

• The first alarm message Out1 (or Out2) is displayed on the screen until the alarm is actually acknowledged (the output active position is acknowledged after the alarm is deactivated).

• After acknowledgment of the first alarm, the screen displays the second alarm message Out2 (or Out1) until the second alarm is acknowledged.

• After both acknowledgments, the display returns to the screensaver.

Assignment of the SDTAM Module Outputs

Output 1 (SD2/OUT1), normally open, is assigned to motor thermal fault indication.

Output 2 (SD4/OUT2), normally closed, is used to open the contactor.

They are activated 400 ms before the circuit breaker trips in the case of:

• Long-time protection

• Phase unbalance protection

• Jam motor protection (MicroLogic 6 E-M)

• Underload protection (MicroLogic 6 E-M)