Controller Resetting (Following System Fault Shutdown); Voltage Regulator And Calibration Specifications; Voltage Regulator Adjustments - Kohler 6EKOD Service Manual

7.10.2 Controller Resetting (Following
System Fault Shutdown)
Always identify and correct the cause of a fault
shutdown before resetting the controller.
following procedure to reset the generator set controller
after a fault shutdown.
1. Disconnect the generator set from the load. See
the safety precautions at the beginning of this
manual before proceeding.
2. Identify and correct the cause of the fault
shutdown. See the safety precautions at the
beginning of this manual before proceeding. Refer
to Section 6, Troubleshooting.
3. Use the Advanced
pushbutton/rotary selector dial to select the
Overview Page.
4. When the Overview page appears, press the
pushbutton/rotary selector dial to view the active
fault. Press the pushbutton/rotary selector dial
again and then use the pushbutton/rotary selector
dial to CONFIRM CLR FAULT: YES to clear the
fault.
5. Push the pushbutton/rotary selector dial.
6. Start the generator set by pressing the generator
set start/stop button to START. Test operate the
generator set to verify that the cause of the
shutdown has been corrected.
7. Shut the generator off by pressing the generator
set start/stop to the STOP position.
8. Reconnect the generator set to the load.
7.10.3 Voltage Regulator and Calibration
Specifications
The 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.
60 Section 7 Controller
Use the
Digital Control's

7.10.4 Voltage Regulator Adjustments

The descriptions of the voltage regulator adjustments
and features follow.
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.
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.
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.
Engine speed recovery depends upon characteristics
such as engine make, fuel type, load types, and
operating conditions.
setting should match the engine speed recovery
characteristics for the application.
Underfrequency Unload Slope.
determines how much the voltage drops during an
underfrequency condition. Typically, applying a large
electrical load causes a dip in engine speed and
frequency. The voltage regulator reduces voltage,
allowing engine speed recovery.
setting determines the amount of voltage drop.
Regulator Gain. Regulator gain refers to the gain of the
control system. Generally, the higher the gain the faster
the system responds to changes and the lower the gain,
the more stable the system.
If the voltage is slow to recover when loads are applied
or removed, increase the regulator gain. If the voltage is
unstable, decrease the regulator gain.
The voltage adjust
The underfrequency unload
This setting
The volts-per-Hz
TP-6774 2/14a
The