9
+48Vdc, 500mA (FXM
1100/2000, 650- 48) or
+24Vdc (FXM
650-24) from the
external batteries.
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. Each contact can
only be programmed for one function at a time and cannot show multiple conditions. See "UPS
Maintenance > Relay & Load Shed" on page 41 and section 6.5.7 on page 66 for the
HyperTerminal interface.
For Contact C6, the default factory configuration is +48 Vdc output (FXM 650-24 is +24 Vdc), but
it can be factory configured as a dry contact. Figure 2 shows the contact’s layout while Figure 3
shows the +48 Vdc or +24 Vdc terminal block layout.
Figure 2 — Contact Layout (Standard for C1 to C5, Factory Option for C6)
C1:
The C1 contact is energized when line power is unqualified and the Alpha FXM
provides backup battery power to the load(s). It can be used to generate an “On Battery”
contact.
C2, C3:
These contacts are energized when the battery drops below a pre-set voltage
level. They can be used to generate a Low Battery alarm. To change the pre-programmed
level to match the batteries used and the actual operating conditions, see Low Battery
Warning in "UPS Maintenance > Battery" on page 38.
C4:
This contact is energized after the Alpha FXM has been in Inverter mode for 2 hours.
To change the pre-programmed 2 hours to match your operating conditions, see Load
Shed Timer Configuration in "UPS Maintenance > Relay & Load Shed" on page 41.
C5:
The C5 contact is energized when any alarm is generated—see "Table P — Alarm
Submenu" on page 78.
C6:
The factory default layout for the C6 contact is a relay that is energized when the
Alpha FXM is in Line or Inverter modes and is de-energized when in Standby mode. It
provides 48 Vdc (500 mA) from the external batteries to an external fan or other
equipment. C6 can be factory-configured as a dry contact.
Figure 3 — 48 Vdc Contact Layout (De-energized Shown, Factory Default for C6)
The contacts have
a maximum rating
of 1A at 250V.
Microprocessor
Normally
Open (NO)
Normally
Closed (NC)
UPS
Interior
Common (C)
Microprocessor
Contact C6
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