ChronTrol
XT Series Timers
User's Guide
19
Circuits and other Control Assignments
A
circuit
is an output that supplies switched 120V AC (Table Top AC Outlet
models) or a dry contact switch closure (all other models). Circuits are
numbered from 1 to 16 depending on your ChronTrol model.
Any circuit or circuits that are controlled by a given program are kept in a list
of Control Assignments with the program. Assignments can be made or
deleted in any order. They are stored in numerical order.
Programs
and
inputs
can also be controlled by programs. They are assigned
and deleted in the same way as circuits.
Day Omission
The
Day Omission
feature is used to omit (skip) the execution of a program
on any days of the week, and on the holidays specified in the
Holiday List
.
The
Holiday List
is a list of dates. You decide which programs, if any,
should be omitted from the days in the Holiday List. Programs can also be set
to run
only
on holidays (by omitting Days 1 through 7).
Cycle Length
By using the
Cycle Length
feature, programs can be set to repeat at a rate as
short as every two seconds (one second ON and one second OFF) or as long
as every 365 days.
The Cycle Length feature is used to set an
On/Off Program
to repeat at a rate
other than every day, or to set an
Interval Program
to occur more than one
time. Cycle Length settings are made in hours, minutes, seconds, and days, to
a maximum of 365 days, if necessary. For example, a program with a 15
hour and 40 minute cycle repeats its operation every 15 hours and 40
minutes.
Calendar Feature
The Turn-On time and Turn-Off time in any of ChronTrol’s 20 or 40
programs can be set to occur on specific dates within the next 12 months. In
this case, the program repeats at the same time every year, unless the Day
Omission or Cycle Length features are used. You could use this feature to
set a window of operation around a daily schedule that changes every month
or every season, for example.
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