9287500991 Rev K DECS-100 BESTCOMS Software 5-5
Droop - Setpoint (%).
This setting controls the reactive droop compensation feature of the DECS-100.
The setpoint value determines the amount of change permitted in the generator voltage setpoint when the
DECS-100 responds to a reactive load. The setpoint value is adjustable from 0 to 10% in increments of
0.01%. The setpoint is based on a 0.8 power factor load.
Field Current Regulator (FCR) - FCR Setpoint (A).
This setting defines the field current setpoint when
operating in Manual mode. The FCR Setpoint field accepts a value of 0 to 7 Adc in 0.01 Adc increments.
Figure 5-7. Setting Adjustments Screen, Setpoint Tab
Reactive Power Control (VAR) - VAR Setpoint (% of rated).
The VAR Setpoint determines the level of
generator vars maintained by the DECS-100 when operating in Var Control mode. Values from -100 to
+100 percent in 1.0 percent increments may be entered in the VAR Setpoint field.
Power Factor Control (PF) - PF Setpoint.
The PF Setpoint determines the level of generator power factor
maintained by the DECS-100 when operating in Power Factor Control mode. PF Setpoint values are
adjustable from -0.6 to -1 (1) or 0.6 to +1 in 0.001 increments.
Startup Tab
The Startup-tab settings of the Setting Adjustment screen are shown in Figure 5-8. Each setting of the
Startup tab is described in the following paragraphs.
Startup Control - Gen Soft Start Time (sec).
This setting defines the time limit for the generator soft-start
voltage ramp time. The soft-start time minimizes generator voltage overshoot and can be set from 1 to
7,200 seconds in 1 second increments.
Underfrequency Setting - Corner Frequency (Hz).
The Corner Frequency setting defines the value of
frequency that causes the DECS-100 to adjust the voltage setpoint so that the generator voltage follows
the selected volts per hertz slope. A value of 40 to 65 hertz can be entered in this setting field in 0.01
increments.
Underfrequency Setting - Slope (Volts/Hz).
The slope for generator underfrequency protection is selected
with this per-unit setting. A slope setting of 0 to 3.00 can be entered in increments of 0.01.
Voltage Matching - Speed (sec).
This setting determines how quickly the generator voltage is adjusted by
the DECS-100 to match the bus voltage. The Speed setting is adjustable from 1 to 300 seconds in 0.01
increments.
Voltage Matching – Disable by Contact.
This setting selects the DECS-100 contact input used to disable
voltage matching. Selecting “52JK or 52LM” allows either the 52JK or 52LM contact input to disable
voltage matching. Selecting “52JK” allows only the 52JK contact input to disable voltage matching.
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