DESCRIPTION

The microprocessor based DECS-200 is a total excita

tion control system in one enclosure. It contains all the

functionality necessary to limit, control, and protect a

generator from operating outside of the machine’s

capability. A feature of DECS-200’s sophisticated

design allows the nonactive control mode within the

unit to follow the active mode, permitting bumpless

transfer between modes. The optional external tracking

feature also allows for unit-to-unit communication,

permitting autofollowing and transfer between DECS

200 units. It can also communicate to a PC via the front

panel RS-232 port for local programming and metering,

and it can communicate via Modbus™ protocol via the

side RS-485 port for communications up to 4000 feet

away from the DECS-200 unit. The DECS-200 has all

the features, functionality, flexibility and programmabil

ity expected from a state-of-the-art microprocessor

based product.

APPLICATIONS

The DECS-200 is an excitation control system used to control 

the output voltage, vars or power factor of a synchronous

generator by varying or controlling the amount of dc excitation

applied to the generator’s exciter field.

The DECS-200 is suitable for virtually any size machine.