General
Within the EnergyAxis
®
System, the EA_Gatekeeper is the intelligent interface between the EnergyAxis
Management System (EA_MS) and the local area network created by the gatekeeper (referred to as the
EA_LAN). As the interface, gatekeepers are equipped with WAN and LAN communication capabilities.
Depending on the need, utilities have options when choosing how to deploy the EA_Gatekeeper into
service. For example, the EA_Gatekeeper module can be installed in an A3 ALPHA
®
meter if revenue
metering is required at a particular site. If deploying meter-based gatekeepers is neither feasible nor
desired, the EA_Gatekeeper can be enclosure mounted in different form factors.
This leaflet explains how to install the gatekeeper model 2120.
This model of EA_Gatekeeper is configured for 120VAC operation only and uses a battery for backup
gatekeeper operation if AC power fails at site. The EA_Gatekeeper model 2120 uses a NEMA-4 rated
polycarbonate enclosure. The EA_Gatekeeper supports different mounting options, including mounting
on 18-foot (5-meter) to 35-foot (11-meter) utility poles and telephone poles. Instructions on preparing the
EA_Gatekeeper model 2120 for pole mounting are provided in the instructional leaflet IL42-5019.
Figure 1 shows the major components of the EA_Gatekeeper model 2120. Figure 2 shows an illustration
of an assembled gatekeeper.
Because of the self discharge rate of the system backup battery, this product must be powered up
within 60 days of receiving. If the battery drops below 11.25 VDC for an extended period, the battery
may need to be charged with a shop charger or be replaced.
EA_Gatekeeper model 2120
Installation instructions
IL42-5037A
