Kohler RXT User Manual

TP-6807 12/1122 Section 3 Operation
3.4 Time Delays
Time delays are factory-set to the values shown in
Figure 3-2. An authorized distributor/dealer can adjust
time delays using a personal computer and Kohlerr
SiteTecht software.
Time delays described in this section operate only when
the RDC2 or DC2 generator set controller is connected
to a Kohlerr Model RXT transfer switch.
The engine start and load transfer time delays prevent
engine start and load transfer caused by brief variations
in the utility power source.
3.5 Load Control Time Delay
The load control time delay allows delayed starting of
large motor loads (such as air conditioners), preventing
simultaneous starting of large motors after transfer to
the generator set. The load control time delay is fixed at
5 minutes. It is not adjustable.
The load must be connected to the load control output
on the interface board of the Model RXT transfer switch.
See the transfer switch operation and installation
manual for connection instructions.
Note: A separate load control module (LCM) that
provides four power relays and two HVAC relays
is available for generator sets equipped with the
RDC2 or DC2 controller. See LCM Specification
Sheet G6-120 for more information.
Time Delay Setting Description
Engine Start 3 seconds Time delay after utility source is lost until the engine start cycle begins.
Guards against starting the generator set because of a brief change in
the utility source.
Transfer, Normal to Emergency 3 seconds Time delay after emergency source becomes available until transfer to
emergency source.
Transfer, Emergency to Normal 2 minutes Time delay after the utility source returns until transfer back to normal.
Ensures that the the utility source is stable before transferring from the
emergency source.
Load Control 5 minutes Allows delayed connection of selected loads to the generator set.
Prevents simultaneous starting of large motors after transfer to the
emergency source. Recommended for delayed starting of air
conditioners.
Figure 3-2 Time Delays

Kohler RXT Specifications

General

Brand	Kohler
Model	RXT
Category	Switch
Language	English