Basler Electric BE1-11d DC Power Protection System

Select Control Switch and Operate Control Switch pushbuttons provide a means to control the logic

switches.

The LCD has automatic priority logic to govern which metering values are displayed on the screen so that

when an operator approaches, the metering data of most interest is automatically displayed without

having to navigate the menu structure. Scrollable metering parameters are selected on the General

Settings, Front Panel HMI settings screen in BESTCOMSPlus.

Device Information

The version of the embedded software (firmware), serial number, and style number are available from the

front panel or the communication ports.

Three free-form fields (Device ID, Station ID, and User ID) can be used to enter information to identify the

BE1-11d. These fields are used by many of the reporting functions to identify the BE1-11d reporting the

information. Examples of BE1-11d identification field uses include station name, circuit number, relay

system, and purchase order.

Device Security

Security settings affect read and write access. Passwords provide access security for six distinct

functional access areas: Read, Control, Operator, Settings, Design, and Administrator. Each

username/password is assigned an access area with access to that area and each area below it. An

administrator password provides access to all six of the functional areas.

A second dimension of security is provided by the ability to restrict access for any of the access areas to

only specific communication ports. For example, you could set up security to deny access to control

commands through the Ethernet port.

Setting Groups

Four setting groups allow adaptive relaying to be implemented to optimize BE1-11d settings for various

operating conditions. Automatic and external logic can be employed to select the active setting group.

Clock

The clock is used by the logging functions to timestamp events. BE1-11d timekeeping can be self

managed by the internal clock or coordinated with an external source through a network or IRIG device.

A backup capacitor and additional battery backup are provided for the clock. During a loss of operating

power, the backup capacitor maintains timekeeping for up to 24 hours depending on conditions. As the

capacitor nears depletion, the backup battery takes over and maintains timekeeping. The backup battery

has a life expectancy of greater than five years depending on conditions.

IRIG

A standard unmodulated IRIG-B input receives time synchronization signals from a master clock.

Automatic daylight saving time compensation can be enabled and set for floating or fixed dates.

NTP (Network Time Protocol)

NTP synchronizes the real-time clock to network time servers through the Ethernet port. BESTCOMSPlus

is used to establish the priority of time reference sources available to the BE1-11d, IRIG-B, NTP, DNP,

and RTC (real-time clock). The NTP address is set using BESTCOMSPlus.

Communications

Three independent communication ports provide access to all BE1-11d functions. A USB (universal serial

bus) port is located on the front panel, a two-wire RS-485 port is located on the rear panel, and an

optional Ethernet port is located on the rear panel. The RS-485 and Ethernet ports are electrically

isolated.

Modbus® and DNP3 protocols are optionally available for the RS-485 or Ethernet communication port.

The IEC 61850 protocol is optionally available for the Ethernet port when RS-485 option is N (None).

Separate instruction manuals cover each available protocol. Consult the product bulletin or Basler Electric

for availability of these options and instruction manuals. Modbus sessions can be operated

simultaneously over the Ethernet and RS-485 ports.

System Parameters

All sensing is performed using an IT-D isolation module. Each IT-D isolation module includes two

channels that are capable of sensing either dc current or dc voltage. The dc system current is sensed

using an appropriately scaled 25. 50. 75. or 100-millivolt nominal metering shunt. DC voltages are sensed

by direct connection for nominal levels up to 1.500 Vdc. The BE1-11d can utilize two IT-D modules to

sense a single dc current and up to three dc voltages.