HCS Optional Features User Manual
12
ChargeGuard EX Enabled HCS
ChargeGuard EX provides a simple interface to connect the
ClipperCreek HCS EVSE to an existing building access control
or other third party access control system. With ChargeGuard EX
a momentary contact closure driven by successful authentication
in an access control system can activate the HCS ChargeGuard
EX enabled station for a single charging session. Alternatively,
maintaining the contact closure will leave the station enabled for
multiple charging sessions until the connection is released.
When the Orange and Yellow control wires are shorted together,
the EVSE is “ON” and ready to charge a vehicle. When the
wires are disconnected, the station is “OFF” and requires a valid
activation through the access control system in order to begin
charging again. Refer to
Figure 3
and
Figure 4
.
ChargeGuard EX can be utilized in two ways:
1. If individual access control is desired (for each charge
session), the access control system will need to provide
a momentary short to the Orange and Yellow wires
which will activate the station for a single charge
session. In this implementation once the vehicle is
disconnected the station will require a successful
authorization through the access control system.
2. If open access is desired, connect the Orange and
Yellow wires for as long as open access is desired.
As long as the Orange and Yellow wires are shorted
together, the station will be enabled for use.
