Kera SELENA User Manual Download

Page: 22 / 53

SELENA

Multifunctional LED Clock

USER MANUAL V32D

KERA TECHNOLOGIES INC. 2013

www.ledclocks.com

Press the

SET

key at any time during the normal clock operation.

The display will show the Weekday and the Event number for that day.

The Event number will flash rapidly to indicate that it is active for selection. Use the

and

keys to select the

event number for that day.

To move the cursor to the Weekdays press the

NXT

key.

Use the

and

keys to select the day and press the

NXT

key. The display will show:

du:xx

(or:

dxxx

)

where

“xx”

(or

“xxx”

)

is the Alarm duration period

in seconds ( 0 to 58 )

for the event being programmed.

NOTE

that when the duration is set to

59 seconds

, the Relay 1 (if enabled by function Fn37) and / or the internal

buzzer (if enabled by function Fn17) , will remain energized until the next occurring, valid event with the duration
programmed as

different

than 59 seconds.

Using the

and

keys, set the required Alarm duration period in seconds. When satisfied, press the

NXT

key.

The display will show the hour and the minute (HH:MM) of the event that day. Using the

and

keys preset the

required time of the event. To move the cursor press the

NXT

key.

The display will show:

OP zz

, where

“zz”

is an additional option that can be activated at the time of the event. This

option allows to cause the display to show a

running UP or DOWN timer

that is automatically programmed with a

time period equal to the time difference

between the CURRENT and the NEXT valid event

. Depending upon the

selected option number, the event may cause the internal Relay 2 ( if installed ) to be activated as well. In such case
the Relay 2 will remain energized until the next valid event. The Relay 2 contacts are accessible at the back panel of
the clock.

NOTE that in the 4 digit clocks the timer Count-Up or Count-Down format may be in Hrs:Min or Min:Sec depending
upon the setting of the function Fn 38. Also, if the Hrs:Min format is selected, the timer display will switch
automatically to Min:Sec whenever the current timer reading is under 1 hour,

Using the

and

keys select the required option for the event. The available options are as follows:

Option “00”

= sets this entire event as

NOT VALID

( this event will be skipped by the timer routine ).

Option “01”

= no options to perform.

Option “02”

= activate the

count DOWN

timer automatically to count DOWN the time until the next event

and

DO NOT energize

internal Relay 2.

Option “03”

= activate the

count UP

timer automatically to count UP the time until the next event

and

DO NOT energize

internal Relay 2.

Option “04”

= activate the

count DOWN

timer automatically to count DOWN the time until the next event

and

ENERGIZE

internal Relay 2.

Option “05”

= activate the

count UP

timer automatically to count UP the time until the next event

and

ENERGIZE

internal Relay 2.

Option “06”

ENERGIZE

internal Relay 2 only, no timer to run.

When satisfied with the preset data, press the

HOLD

key to store the data in memory.

MAKE SURE

that this is done

WHILE

either the

duration, the options

or the

Alarm Hours:Minutes

is on the

display. If it is not done so, the

OLD

data shall be restored in the program memory.

The display will flash the text:

“Strd“

momentarily to indicate that the Alarm data has been stored in memory.

Press the

NXT

key to go back to Step 2 in order to continue programming of other Events

Wait a few seconds for the system to return to the Normal Operating Mode. The Event Timer schedule will begin
executing automatically.

Remember,

that in order to assure the correct operation of the programmable timer, the

real

Date and Time

of the clock has to be set correctly.

NOTE

that the order in which the clock is searching for active alarms is from event “00“ thru event “31“. The search is

performed at 00 seconds of each minute of the real time. The First encountered active alarm shall be executed and further
search shall be aborted until the next minute of the real time clock reading. Therefore, if more than one event for the day is
identical with any other, only the younger (in order) event number shall be executed. This may have application in deactivating
any unused alarm events by setting them as identical to the highest used event number for the day. However, it is a good
practice to deactivate the unused events by setting their option number to 00 (OP 00 ) .
Note, that if certain events show unrecognizable characters and / or show the event hour:minute as 55:55 , these events will
be ignored by the program anyway and therefore do not need to be deactivated manually.

To be able to control the Internal Relay 1 operation during the Timer Alarm periods

, enable the function

Fn 37

(see

FUNCTION SETUP Procedure section).