Factory-Defined Settings

 

 

 

 

 

Relay

 

 

 

 

 

Inhibit

 

Status Event

Refer

 

 

Driver

Alarm

 

 

 

Default

Time

Time

to

 

 

Output

 

 

 

Delay

Delay

or Fault

Menu

Digital Display

 

(RDO)

Horn

Lamp

 

Range Setting

Selection

(sec.)

(sec.)

 

 

 

 

 

 

 

 

 

 

 

 

Voltage Raise

 

 

 

 

 

 

 

 

 

 

 

(see D19)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Weak Battery

10

WEAK

 

 

Off

Warning

 

 

60% of

 

2

 

 

 

BATTERY

 

 

 

 

 

 

nominal

 

 

 

 

 

 

 

 

 

 

 

 

 

 

*

All models, except Waukesha-powered models.

 

 

** NFPA applications

 

 

 

[

Non-paralleling applications

 

 

 

 

[[ DDC/MTU engine with MDEC/ADEC

 

 

]

Waukesha-powered models

 

 

 

 

]] FAA only

 

 

 

 

w

Paralleling applications

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Refer to

 

 

Calibration

Menu

Digital Display

Range Setting

 

 

 

 

Voltage Adjustment

11

VOLT ADJ

±10% of system voltage—

 

 

 

Version 2.10

 

 

 

±20% of system voltage—

 

 

 

Version 2.11 or higher

 

 

 

 

Underfrequency Unload

11

FREQUENCY

40 to 70 Hz

Frequency Setpoint

 

SETPOINT

 

 

 

 

 

Underfrequency Unload

11

SLOPE

0--10% of rated voltage

Slope

 

 

volts per cycle

 

 

 

 

Reactive Droop

11

VOLTAGE

0--10% of system voltage

 

 

DROOP

 

 

 

 

 

VAR Control

11

KVAR ADJ

0 to rated kVAR generating

 

 

 

0 to 35% of rated kVAR absorbing

 

 

 

 

Power Factor (PF) Adjust

11

PF ADJ

0.7 to 1.0 leading

Control

 

 

0.6 to 1.0 lagging

 

 

 

 

Controller Gain

11

REGULATOR

1--10000

 

 

GAIN

 

 

 

 

 

VAR/PF Gain or Utility

11

VAR/PF GAIN

1--10000

Stability

 

 

 

 

 

 

 

Figure 1-13 Settings for Controller Internal Voltage Regulation

Default Selection

System voltage

1 Hz below system frequency (ECM)

2 Hz below system frequency (non-ECM)

3.1% of system voltage

4% of system voltage

0

0.8lagging

100

100

1.3.2Voltage Regulator and Calibration Specifications

The 550 controller has a voltage regulation function that is internal to the processor. This means that no external voltage regulator is necessary. The voltage regulation of the controller uses root mean square (rms) sensing for fast response to changes in indicated and regulated voltages resulting in excellent regulation accuracy.

RMS voltage regulation is available for both paralleling and utility application to control changes in the reactive loads due to load changes, prime mover speed variation, thermal drift, and other variations. See Figure 1-13 for data on the 550 controller voltage regulation. Refer to Appendix C to customize adjustments for specific applications.

1.3.3Voltage Regulator Adjustments

The descriptions of the voltage regulator adjustments and features follow. See Appendix C, Voltage Regulator Definitions and Adjustments, for additional information.

Voltage Adjustment. The voltage adjustment allows the user to enter the desired generator set output level. This regulated level setting is the average of the three line-to-line voltages in three-phase configurations or L1-to-L2 in single phase configurations.

Submenus display the individual line-to-line voltages. These voltages are for reference only and are relevant in unbalanced load conditions. The voltage adjust setpoint can be changed to accommodate an important phase in an unbalanced system.

Underfrequency Unload Frequency Setpoint. This adjustment affects the voltage droop (volts per Hz) when load is applied and underfrequency occurs. The underfrequency unload setting defines the setpoint where underfrequency starts. Any frequency below the setpoint causes the voltage to drop thus reducing the load allowing the engine speed to recover according to the underfrequency unload slope setting.

30 Section 1 Specifications and Features

TP-6200 10/12

Page 30
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Kohler 20-3250 kW manual Voltage Regulator and Calibration Specifications, Voltage Regulator Adjustments