Basler Electric DECS-250N - Manual (Page 133)

9440500990 Rev D 117
DECS-250N Terminals and Connectors
Table 5. Left Side Terminal and Connector Descriptions
Locator Description
A These terminals accept three-phase operating power for the excitation power stage of
the DECS-250N. A ground for the operating power connections is provided at terminal
GND.
B Excitation power is supplied to the field through the terminals labeled F+ and F–. The
GND terminal serves as the chassis ground for the DECS-250N.
C These terminals connect to user-supplied current transformers (CTs) providing three
phases of generator sensing current and a cross-current compensation signal.
D These terminals accept ac and/or dc control power to enable DECS-250N operation.
A ground terminal is also provided.
E Three-phase generator and bus sensing voltage, obtained from user-supplied voltage
transformers (VTs), connect to these terminals.
F A portion of this terminal block accepts an external analog control signal for auxiliary
control of the regulation setpoint. Terminals I+, I–, V+, and V– are used for external
control of the regulation setpoint with the GND terminal serving as a cable shield
connection.
The remaining terminal block pins serve as connections for the Watchdog and
programmable relay outputs 1 through 4.
G Relay contact outputs for programmable relay outputs 4 through 11 connect to these
terminals.
H Contact inputs for the Start and Stop functions and programmable contact inputs 1
through 4 are applied to these terminals.
I Programmable contact inputs 5 through 10 are applied to these terminals.
J A portion of these terminal block pins accept connections for programmable contact
inputs 11 through 14.
The remaining terminal block pins serve as connections for RS-485 communication.