Product Brochure

Control Unit
The control unit will integrate SAE J1772 Functions, Metering, Overload monitoring and will manage HMI and all
local monitoring.
• The SAE J1772 functions include the following:
• Energization and De-energization of the system
• Verification of vehicle connection; the DuraStation de-energizes output when the connector is uncoupled
• Continuous monitoring of ground connection between the EV and the DuraStation
• Automatic De-energization of the cable in case of rupture or separation of the cable
• Continuous monitoring of DuraStation current capacity with supply rating recognition by PWM 1kHZ signal
• Determination of ventilation requirements depending on battery type of vehicle
The GE DuraStation provides communications through the controller prompting proper cord management.
A message on the VFD screen instructs the operator to return the plug to the charger inlet, thereby reducing the
possibility of plug and cord damage. The proximity detection feature, which is part of the SAE J1772 connector,
enables the coupler to communicate the presence of the connector when it is inserted into the DuraStation coupler.
Overload monitoring is provided by the control unit which features protection above 125% nominal current. This
threshold limit will be below the breaker protecting the DuraStation’s limit to avoid local maintenance of the system
during an overload event. The control unit will include a 15-20 mA ground fault protection according to UL2231. An
integrated single phase meter will measure current and voltage in addition to calculating energy and power. The
control unit also performs monitoring of the contactor to ensure the contactor is in the correct state when charging
or not charging.
User Interface
The GE DuraStation offers a user interface that is easy to operate and guides a user through charging their vehicle.
A Vacuum Fluorescent Display (VFD) screen features greetings, instructions, and charging station messages as
well as featuring communications for the single phase metering. The LED light located at the top of the charging
station displays charger statuses as follows:
• Green = Station active
• Blinking green = Vehicle connected, not charging
• Amber = Charging
• Red = Fault occurred
Radio Frequency Identification
GE DuraStations offer the option for Radio Frequency Identification (RFID). The ISO 15693 compliant RFID can
be used with key cards provided by GE. Users will simply wave their key cards in front of the RFID reader at the
particular DuraStation intended for use and will be authorized to start charging. There are a few benefits associated
with implementing RFID:
• Ethernet network offered for RFID authorization service
• Provides security, enabling only authorized users to operate the charging station through RFID
• Secure software application offering different privilege levels for owner/operator of the DuraStation
RFID Software Application
The RFID software application is responsible for maintaining and processing authorization of users for the DuraStations
it supports. Operators will be able to control adding, removing, or suspending user authorization. The software
application also supplies reports on the DuraStation usage, enabling data collection, and monitors the status of
communication between the RFID software and DuraStation EV charger. This is a local desktop application which
runs on a Windows
®
operating system, requiring Windows XP or Windows 7. The software desktop application,
which stores data in a relational database, communicates with the DuraStation controller over TCP/IP protocol.