Specifications

017-230-B0 Rev 0810

Battery Breaker

This circuit breaker provides over-current protection and is uses as an on/off switch for the battery power. It must

be switched on for proper Alpha FXM operation.

Battery C onnector

The battery connector connects the external batteries to the Alpha FXM.

Internal Fan

This microprocessor-controlled fan regulates the Alpha FXM’s internal temperature for optimum performance. It

must not be blocked. If the fan fails, an Alarm is generated.

LAN

This optional RJ-45 connector is the Alpha FXM’s Ethernet connector.

LCD Cont rol Panel

The LCD control panel together with the cancel, scroll and select buttons are used to monitor and control the

Alpha FXM.

Battery Voltage Test Points

These let you measure the battery voltage. They accept 2 mm diameter test probe tips. The battery circuit

breaker must be on to measure the voltage.

The battery voltage test points are not and should not be used as a power outlet.

RS-232

This DE-9 connector allows a straight-through DE-9 to DE-9 connector cable to be used to connect the

Alpha FXM to a computer for remote control and monitoring.

Battery Temp

The Battery Temp connector attaches the battery temperature sensor to the Alpha FXM to monitor the battery

temperature. The charging voltage is temperature dependant. The Alpha FXM’s microprocessor adjusts the

charging voltage for optimum charging.

The sensor MUST be attached to the Alpha FXM for normal operation. Firmly attach the sensor end to the centre

battery’s case with high-strength ﬂameproof tape such as duct tape as shown in “Wiring the External Batteries”

section. If the sensor isn't attached, a “Temperature Probe Unplugged” alarm will appear on the LCD.

Contacts C1 to C6

Contacts C1 to C5 allow the Alpha FXM to be connected to an external monitoring panel or to trafﬁc control

equipment.

The factory default settings can be reprogrammed to meet your requirements. See “Programming the Dry Con-

tacts and the Clock” and “Alpha UPS Monitor, Operations, Relay and Load Shed”.

For Contact C6, the default factory conﬁguration is +48 VDC output (FXM 650-24 is +24 VDC), but it can be fac-

tory conﬁgured as a dry contact. Figure 4 shows the contact’s layout while Figure 5 shows the +48 VDC or +24

VDC terminal block layout.