User manual

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4 Setup
The VGM is designed to be highly configurable, in order to meet the requirements for a wide
range of applications. The following sections describe the available options and how to use them
correctly.
In order to access the setup menus, it is necessary to set the VPN access level to “user and
install”. Once configuration is complete, it is recommended that the VPN access level be set to
“user”. For more information on access levels, refer to the VPN user manual.
4.1 Generator alarms
The VGM can be configured to generate an alarm if a problem occurs with the generator. It is
also possible to have the VGM automatically stop the generator when certain faults are detected.
The actions available for each individual alarm depend on the parameter being monitored. Table
4-1 describes the available alarm actions.
Description Action taken when alarm condition occurs
pre alarm off None.
pre alarm on Alarm sent to VPN and VGM fault light illuminates.
pre shutdown on Alarm sent to VPN, VGM fault light illuminated, and generator stopped.
alarm disabled None.
alarm enabled Alarm sent to VPN and VGM fault light illuminates.
shutdown enabled Alarm sent to VPN, VGM fault light illuminates, and the generator stopped.
Table 4-1 - Alarm options
Note: Most generators have preset shutdown levels for certain types of fault. The alarms for
these faults use the “pre alarm on”, and “pre shutdown on” options. When using these alarms, the
alarm thresholds should be configured so that the VGM recognises the alarm conditions before
the generator does. This is because many generators will not identify the cause of an automatic
shutdown, so by allowing the VGM to detect the fault first, the cause can be determined later by
looking at the last alarm properties in the “gen log” menu (see chapter 3.4 - Generator logging).
For information on changing the alarm thresholds, refer to chapter 4.2 - Generator setup.
Gen alarms menu
Menu item Description Supported options Default value
Oil pressure Generates an alarm if
the oil pressure is too
low). Note: do not
enable this alarm
unless an oil pressure
sender is connected.
“pre alarm off”, “pre
alarm on”, “pre
shutdown on”
“pre alarm off”
Coolant temp Generates an alarm if
the coolant
temperature is too
high. Note: do not
enable this alarm
unless a temperature
sender is connected.
“pre alarm off”, “pre
alarm on”, “pre
shutdown on”
“pre alarm off”
Generator overload Generates an alarm if
the generator load
“pre alarm off”, “pre
alarm on”
“pre alarm on”