2-22 Human-Machine Interface DECS-200
FRONT PANEL OPERATION
The following paragraphs describe the settings and adjustments that are available via the DECS-200 front
panel. They are grouped into eight main categories which include: operating modes, setpoints, loop gains,
metering, protection, limiters, system parameters, and general settings.
Front panel settings and adjustments are listed and described in the following paragraphs. Settings are
organized by category and by screen.
Operating Modes
Screen: \OPER\OPERATE_1 (1.1)
START/STOP - starts and stops the regulator
AVR OR FCR - selects the regulator mode: AVR for automatic voltage regulator, FCR for field current
regulator (also known as MANUAL mode)
PF OR var - selects the controller mode: OFF for none, var for var control, PF for power factor control
LOAD COMP - selects the load compensation type: OFF for none, DROOP for voltage droop.
PRE-POSITION - enables/disables the pre-position function: OFF to disable, ON to enable
Screen: \OPER\OPERATE_2 (1.2)
VOLT MATCH - turns the voltage matching function on and off (Internal tracking between modes)
INT TRACK - turns the internal tracking function on and off
EXT TRACK - turns the external tracking function on and off
UF OR V/HZ - selects either underfrequency or volts-per-hertz limiting
Setpoints
Screen: \SETPT\MODE_SET (2.1)
AVR MODE - the automatic voltage regulation setpoint in actual generator voltage
FCR MODE - the field current regulation setpoint in Amps
DROOP - the amount of voltage droop as a % of rated generator voltage when the kvar load numerically
equals the rated kW
Var MODE - the var controller regulation setpoint in var
PF MODE - the power factor controller regulation setpoint
Screen: \SETPT\MODES\RANGE_1 (2.1.1)
FINE V BD - the adjustable voltage band (var volt band) around the generator's output voltage as a % of
rated generator voltage when var/PF mode is active
AVR MIN - the minimum automatic voltage regulator setpoint as a % of rated generator voltage
AVR MAX - the maximum automatic voltage regulator setpoint as a % of rated generator voltage
FCR MIN - the minimum field current regulator setpoint as a % of rated field current
FCR MAX - the maximum field current regulator setpoint as a % of rated field current
Screen: \SETPT\MODES\RANGE_2 (2.1.2)
MIN var OUT - the minimum generated var setpoint as a numerical % of rated generator kW (negative for
absorbing)
MAX var OUT - the maximum generated var setpoint as a numerical % of rated generator kW (negative
for absorbing)
MAX LAG PF - maximum lagging power factor setpoint
MAX LEAD PF - maximum leading power factor setpoint
V MATCH BD - the adjustable voltage band allows the voltage matching function to activate if the bus
voltage is within this band. This setting is a numerical % of rated generator voltage.
V MATCH REF - (Gen to Bus PT Match Level) the bus voltage setpoint for the voltage matching function
as a numerical % of bus voltage
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