EnerSys Alpha FXM HP 1100, Technical Manual

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0170022-J0 Rev A Page 13
4.3 Dry Contact Description
Contacts C1 to C5 allow the unit to be connected to an external monitoring panel or to traffic control
equipment.
Figure 3: Dry Contact Overview
Output Terminal Block The unit’s AC power output.
USB-A input The USB input connector connects USB memory stick for system
backup, restore and download of logs and configuration files.
Table 5: Feature Description (Continued) (Sheet 2 of 2)
Feature Description
Table 6: C1 to C5 Dry Contacts (Sheet 1 of 2)
Feature Description
C1 (On Battery) The C1 contact is energized when line power is unqualified and the
unit provides backup battery power to the load(s). It can be used to
generate an On Battery contact.
C2, C3 (Low B No
Line_LOBAT NOLIN)
These contacts are energized when the battery drops below a pre-set
voltage level and line is not present. 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”.
C4 (Timer) This contact is energized after the unit has been in Inverter mode for
two hours. To change the pre-programmed two hours to match your
operating conditions, see
Load Shedding Relays
.
C5 (Alarm) The C5 contact is energized when any alarm is generated.
The contacts have a
maximum rating of
1A at 240V.
Microprocessor
UPS
Interior
Normally
Closed (NC) Normally
Open (NO)
Common(C)