Kohler 500EOZCS Operation page 32

Fuel Level. The level of the fuel in the tank supplying
this generator. This is available in the engine metering
section in SiteTecht, but not elsewhere on the User
Interface. If no fuel level sensor is connected, this
parameter will display N/A. Do not use Fuel Level as the
Generator Management Mode if there is no fuel level
sensor connected—the operation of the system is not
defined in this case.
Stable Delay. The time between the system entering a
valid generator management state and the time that
generator management becomes active.
A valid generator management state requires:
A Start Signal is present (Local start, remote start,
D
or communications start)
A least one generator is closed to the paralleling bus
D
Generator Management is enabled
D
The configuration of vital parameters of the system
D
are identical between all controllers
No generators have recently failed
D
Load control has added priorities through the Min
D
Loads Added Threshold
The generator management order is valid
D
Once active, generator management will only go
inactive if:
A generator fails (shuts down with either a fault or
D
user input)
All generators are disconnected from the bus
D
The Start Signal is removed
D
Generator Management is disabled
D
The configuration on any controller on the network
D
is changed by a user
The order becomes invalid
D
All the generators in the system must have the same
setting for the stable delay for the generator
management to operate. If this parameter is changed, it
will be updated on all the generators which are
connected to the PGEN network.
Minimum Gens Online. Generator Management will
always try to keep this many generators online (even if
they are not needed). All the generators in the system
must have the same setting for the Minimum Gens
Online for the generator management to operate. If this
parameter is changed, it will be updated on all the
generators which are connected to the PGEN network.
The purpose of this setting is to allow configuration to
support large transient loads or potential generator
failure (N+1 redundancy).
32 Section 1 Specifications
Note: Only 1 and 2 Minimum Gens Online is supported
at this time.
Min Loads Added. The Load Shed priority that must be
online before generator management will consider
stopping a generator. This is implemented so that
generators aren't stopped prematurely (before all the
available load has been applied to the system). All the
generators in the system must have the same setting for
Min Loads Added for the generator management to
operate. If this parameter is changed, it will be updated
on all the generators which are connected to the PGEN
network.
Note: Min Loads Added should be set up to support the
load control outputs which are connected to
actual loads. There is no reason to wait for a load
control output to add if no load will be added to the
system when it does. At the same time, it is
important that all load which the paralleling
system will have to support be supplied by the
system before generator management makes
the determination to stop a generator.
The load control outputs should be capable of shedding
enough load that a single generator can support what
remains (this should be handled during commissioning,
but is included for consideration as loads grow).
Stopped By Gen Mgmt. If a stop command is issued by
Gen Management, the display will indicate TRUE. This
field only changes when a stop command is issued.
Load Control
Load Control drives 6 outputs (Load Priority 1 Shed
through Load Priority 6 Shed) to remove loads from the
paralleling bus when the attached generators are
unable to support them.
Description Section following for more information.
The outputs must be tied to programmable outputs in
the configuration before they can be used, but they are
controlled internally regardless of output configuration
or external connection status.
All generators on the PGEN network initiate load control
at the same time and use the same measured values to
determine the Add and Shed timing (Bus % kW and Bus
Frequency). If the load control settings are set identically,
each load control priority will add at the same time on all
generators in the paralleling system. This allows
Priorities 1 and 2 to be connected to one generator, while
Priorities 3 and 4 can be connected to another generator.
Note: Load Control in a paralleling system operates
identically to the load control on a single
generator, except that it takes different metered
values into consideration.
See the Load Control
TP-7126 5/20