Product Manual
Table Of Contents
- Safety Precautions and Instructions
- Introduction
- Service Assistance
- Section 1. Descriptions and Service Views
- Section 2. Generator Set Operation
- Section 3. VSC Controller Operation
- 3.1 VSC Generator Set Controller
- 3.2 Control and Indicators
- 3.3 Controller Power
- 3.4 Battery Charging
- 3.5 Changing Settings
- 3.6 Setting the Exerciser
- 3.7 VSC Controller Menus
- 3.8 Main Menu
- 3.9 Overview Menu
- 3.10 Engine Metering Menu
- 3.11 Generator Metering Menu
- 3.12 Generator Set Information Menu
- 3.13 Genset Run Time Menu
- 3.14 Genset System Menu
- 3.15 Date and Time Menu
- 3.16 Networking Information Menus
- 3.17 Programmable Interface Module (PIM) Status Menu
- 3.18 Event Log
- Section 4. Scheduled Maintenance
- Section 5. Troubleshooting
- Appendix A. Abbreviations
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3.14.1 Adjusting the Display Contrast
To adjust the display contrast, use the down arrow button to step to the Contrast menu. Press the Select button, and then use
the up and down arrow buttons to adjust the contrast. Press the Select button to save the contrast setting.
3.14.2 System Parameters for Battery Bank Charging
The following system parameters can be viewed in the Genset System menu on the user interface on the generator set’s VSC
controller.
• System Voltage
• Auto Start Voltage
• Auto Stop Load (%)
• Load Limit
Note:
Changing these settings can damage your generator set and batteries. Always refer to the information provided by the battery
bank manufacturer for the correct voltage and charge current limits for your batteries. Contact an authorized Kohler distributor
or dealer for assistance if the default settings are not appropriate for the battery bank.
System Voltage: The system voltage is the output voltage of the generator set. Default values are shown in Figure 26. The
system voltage is set to the required output voltage to properly support the load and charge the battery. Do not confuse this
value with the voltage designation of the battery stack. For example, four 12V batteries in series results in a 48V battery stack,
but the output voltage needed to charge the battery stack is 54V.
Nominal Voltage
24V
36V
48V
Default System Voltage, VDC
27
40.5
54
Figure 26 System Voltage Default Settings
Refer to the battery manufacturer’s documentation for the recommended charging voltage. If the system voltage needs to be
changed, contact an authorized Kohler distributor or dealer.
Note:
Setting the system voltage to a higher value than the factory default setting will decrease the power output of the generator set.
A 6VSG set at the system voltage shown in Figure 26 will have an output of 6 kW. If the system voltage is set to a higher value,
the output current decreases. The available power output also decreases below 6 kW due to the limits on the engine speed. The
graphs in Figure 27 illustrate the effect of changing the system voltage.