Kohler EKOZD Series Service page 232

Stable Delay
The Stable Delay is the delay between the system
reaching a typical loading scenario and Generator
Management becoming active. This delay is intended to
allow any loads connected to the system to reach a
typical load level before Generator Management stops
any generators.
The Stable delay should be configured to allow the
Generator Management to become active when the
system load has reached a nominal level (all abnormal
load conditions due to a loss of power have been
removed).
Range: 0 sec - 3600 sec
Default: 300sec
Runtime Threshold
The Runtime Threshold is the maximum Runtime Hour
difference that Generator Management will allow before
starting the lower-hour generator and stopping the
higher-hour generator.
considered with the order selection mode (control
mode) set to Runtime Hours. The Threshold should be
set based on the intended start/stop frequency of the
generators (understanding that changing load may
cause additional start/stop cycles).
Range: 0.1 h - 2400.0 h
Default: 24.0 h
Fuel Level Threshold
The Fuel Level Threshold is the maximum Fuel Level
difference that Generator Management will allow before
starting the generator with more fuel and stopping the
generator with less fuel. This parameter is only
considered with the order selection mode (control
mode) set to Fuel Level. The Threshold should be set
based on the intended start/stop frequency of the
generators (understanding that changing load may
cause additional start/stop cycles).
Range: 0.5% - 50.0%
Default: 10.0%
Min Gens Online
This parameter indicates how many generators the
system will run with no load on the system. It can be
used to keep an additional generator online, but is not
intended to convert a system to N+1 Redundancy. N+1
Redundancy can be accomplished by setting the start
and stop percentages considerably lower.
Range: 1 - 2
Default: 1
232 Section 12 Paralleling System Information
This parameter is only
Min Load Shed Priority
Generator Management will be disabled any time the
load control sheds a priority below this level. Setting the
Min Load Shed Priority to 0 will disable the link between
Load Control and Generator Management. Minimum
Load Shed Priority should only be set to 0 if no Load
Control priorities are connected to interrupt a load.
If loads are shed below this threshold, Generator
Management will be disabled (resulting in all available
generators starting).
Any connected Load Control priorities should disable
Generator Management when they are shed, to avoid
Generator Management stopping generators while
loads are still adding, to allow Generator Management
to start additional generators to support shed loads, and
to allow extended underfrequency events to start
additional generators.
Range: 0 - 6
Default: 0
12.6.7 Load Management
Load Management allows the temporary removal of
loads from a paralleling generator system during startup
(as a single generator will close to the dead paralleling
bus and must be able to maintain rated voltage and
frequency so that the other node can synchronize to it). It
also removes loads in the event of a generator overload
in order to maintain power to more important loads.
All load priorities are shed on receipt of a system start
command, but no loads are shed during a local start.
Load Management has 6 priorities that add in sequence.
Priority 1 adds first and priority 6 adds last. The priorities
shed in reverse order, priority 6 sheds first and priority 1
sheds last.
The timing for a priority to add is related to the available
capacity of the generator system (more capacity will
result in quicker load adding).
The timing for a priority to shed is related to the degree of
system overload (except for initial shed, which is
instant). More overload results in quicker load shedding.
TP-6953 7/19