MC22LV SERIES
– MASTER CLOCKS
REV 3/17/15
APPLIED TECHNICAL SYSTEMS
PAGE 17
Key in the number(s) of the relay(s) that you would like to manually control. The numbers of the
relays chosen will be seen on the bottom line of the display. To remove a relay from the bottom
line, press its number again.
After selecting the relays, press [ENTER]. The output relays chosen will be energized and the
Master Clock will return to the time display. The relays will remain on for the duration of their
respective pulse length, or until the next program step instructs them to turn off, or until they are
manually operated again.
7.2 MANUAL SELECTION OF ALTERNATE PLANS
[2] [1] [ENTER]
Alternate Plans can be selected from the keyboard in addition to being selected by the ANNUAL
PROGRAM.
To select an Alternate Plan type [2] [1] [ENTER]. The display will respond with:
Enter the desired Basic Plan number, then press [ENTER]. The master clock will now run the
Basic Plan you have selected. The master clock will automatically go back to Basic Plan 0 after
12:00 AM. Also, if any of the following changes are made, the master clock will return to Basic
Plan 0:
Entering a new time.
A power failure of any duration.
Entering a new date.
Modifying the Annual programs.
Clearing the Annual programs.
Use special function 90 (See STATUS Section 7.5) to verify which plan is running.
7.3 SETTING THE MAXIMUM NUMBER OF STEPS PER PLAN
[3] [1]
[ENTER]
The master clock has a default setup of 10 Basic Plans with 20 Program Steps each for a total of
200 steps. These plans are numbered Plan 0 through Plan 9. Plan 0 is the main Plan that will
repeat itself every 7 days. Plans 1 through 9 are Alternate Plans that can be scheduled by the
Annual Program, or they can be called up manually using the MANUAL SELECTION function as
described above.
The master clock can be reconfigured to allow more than 20 Steps per Plan. Special function
Command 31 is used to adjust the number of Steps per Plan from 20 to 100. The number of
Alternate Plans will automatically be adjusted to fit the maximum number of 200 Steps available.
Changing the maximum number of Steps per Plan should be done prior to entering your
program.
To set the number of Steps type [3] [1] [ENTER]. The display will read:
Select
New Basic: 0
Max. Step No: 19
(0-99), ENTER
Manual Control
Relays: 12
