FDM121 System Display

Display of Micrologic Measurements and Alarms

The FDM121 displays Micrologic measurements, alarms and operating information. It cannot be used to modify the protection settings. Measurements may be easily accessed via a menu. All user-defined alarms are automatically displayed.

The display mode depends on the priority level selected during alarm set-up:

• High priority: a pop-up window displays the time-stamped description of the alarm and the orange LED flashes

• Medium priority: the orange "Alarm" LED goes steady on

All faults resulting in a trip automatically produce a high-priority alarm, without any special settings required. In all cases, the alarm history is updated. Micrologic saves the information in its non-volatile memory in the event of an FDM121 power loss.

Status Indications and Remote Control

For circuit breakers equipped with the Breaker Status Module, the FDM121 display can also be used to view circuit breaker status conditions:

• O/F: ON/OFF

• SD: trip indication

• SDE: Fault-trip indication (overload, short-circuit, ground fault)

When the circuit breaker system is equipped with the IO application module, the FDM121 can monitor and control:

• cradle management

• circuit breaker operation

• light and load control

• custom application.

When the circuit breaker system is equipped with the communicating motor mechanism module, the FDM121 offers remote closing and opening control.

Main Characteristics

• 96 x 96 x 30 mm (3.8 x 3.8 x 1.2 in.) screen requiring 10 mm (0.4 in.) behind the door. Screen requires 20 mm (0.8 in.) when the 24 V power supply connector is used.

• White backlighting.

• Wide viewing angle: vertical ±60°, horizontal ±30°.

• High resolution: excellent reading of graphic symbols.

• Alarm LED: flashing orange for alarm pick-up, steady orange after operator reset if alarm condition persists.

• Operating temperature range -10°C to +55°C (14°F to 131°F).

• CE / UL / CSA marking (pending).

• 24 Vdc power supply, with tolerances -20%/+10% (19.2 Vdc to 26.4 Vdc).
  When the FDM121 is connected to the communication network, the 24 Vdc can be supplied by the communication system wiring system.

• Consumption 40 mA.

Mounting

The FDM121 is easily installed in a switchboard.

• Standard door cut-out 92 x 92 mm (3.6 x 3.6 in.).

• Attached using clips.

To avoid a cut-out in the door, an accessory is available for surface mounting by drilling only two 22 mm (0.87 in.) diameter holes.

The FDM121 degree of protection is IP54 in front. IP54 is maintained after switchboard mounting by using the supplied gasket during installation.

Connection

The FDM121 is equipped with:

• a 24 Vdc terminal block:

  • Plug-in type with two wire inputs per point for easy daisy-chaining

  • Power supply range of 24 Vdc -20%/+10% (19.2 V to 26.4 V).

A 24 Vdc type auxiliary power supply must be connected to a single point on the ULP system. The FDM121 display unit has a 2-point screw connector on the rear panel of the module for this purpose. The ULP module to which the auxiliary power supply is connected distributes the supply via the ULP cable to all the ULP modules connected to the system and therefore also to Micrologic.

• Two RJ45 jacks.

The FDM121 connects to the internal communication terminal block on the Masterpact via the breaker ULP cord. Connection to one of the RJ45 connectors on the FDM121 automatically establishes communication between the Micrologic and the FDM121 and supplies power to the Micrologic measurement functions.

When the second connector is not used, it must be fitted with a line terminator

Five buttons are used for intuitive and fast navigation.

The "Context" button may be used to select the type of display (digital, bar graph, analogue). The user can select the display language (Chinese, English, French, German, Italian, Portuguese, Spanish, etc.).

Screens

When powered up, the FDM121 screen automatically displays the ON/OFF status of the device.

When not in use, the screen is not backlit. Backlighting can be activated by pressing one of the buttons. It goes off after 3 minutes.

Fast access to essential information

• "Quick view" provides access to five screens that display a summary of essential operating information (I, V, f, P, E, THD, circuit breaker On / Off).

Access to detailed information

• "Metering" can be used to display the measurement data (I, V, f, P, Q, S, E, THD, PF) with the corresponding min/max values.

• Alarms displays active alarms and the alarm history.

• Services provides access to the operation counters, energy and maximeter reset function, maintenance indicators, identification of modules connected to the internal bus and FDM121 internal settings (language, contrast, etc.).