SELENA
Multifunctional LED Clock
USER MANUAL V32D
KERA TECHNOLOGIES INC. 2013
www.ledclocks.com
41
Fn11
Fn12
OPERATION
OFF
OFF
58th or 59th Minute reference for 2- or 3-Wire system .
Pulse at 58th second of the minute will sync the clock.
ON
OFF
58th or 59th Minute BODET reference for 2-or 3-Wire system .
Pulse at 00th second of the minute will sync the clock.
OFF
ON
1 or 1/2 Minute Reverse Polarity. Pulse at 00th second of the minute will sync the clock.
Additional Special sync Feature:
Independent of the Fn 11 and Fn 12 settings, the functions
Fn 23
and
Fn 13
may also be enabled. This will cause the Selena
clock to respond to a Positive Sync signal presented on a separate low or high voltage input. The protocol will be similar as in
the Power Line Carrier Sync mode ( see Power Line Carrier sync description ), except that a
Positive DC Signal or an AC
signal ( 50/60Hz )
is used rather than a specific Frequency. This may allow the user to independently sync all Selena clocks in
the network to the closest hour (58th minute) and/or to 5:58 if the function
Fn 14
is enabled and also to 17:58 if
Fn 14
is not
enabled.
NOTE, that the above feature is optional and requires that the appropriate signal inputs be installed on the clock back
panel. Specify the required features when ordering.
BCD Time Code synchronization Slave / Receiver ( SIMPLEX compatible )
( Optional Feature )
The BCD Time Code Synchronization slave mode may be activated by enabling the Function
Fn 21
.
SELENA clocks will respond to the signal within the range of + 5 to + 35 VDC presented at the appropriate inputs.
The current load requirements are very low and are equivalent to an Input Resistance of 4.7 to 10 Kohm.
The input is electrically isolated from all internal electronics via high isolation opto-coupler that can withstand high voltage
differences of over 1,500V.
This Sync option can receive BCD Time Code at either 50Hz or 60Hz clock speed and it detects the correct clock
automatically.
MULTI-ZONE Clock Systems
( Optional Feature )
The SELENA Multi-Zone clock ( V25 and later ) configurations are based on the ability of the clocks to be
synchronized to
the Second only or the Minute-Units only
or to an absolute time
hours and minutes Offset.
All methods allow the zones to differ by
as little as 1 minute
from each other.
The internal timekeeping by each zone clock allows it to display the zone time and the zone date as well.
In clocks with the
TEXT display, the ZONE names
as well as the
zone dates
may be stored and displayed electronically and
they may be made to alternate between several different screens per each zone (
see Fn 64, 65, 66, 80, 85, 86
).
The ZONE Master clock and each of the ZONE Slave clocks in the Multi-zone configuration should be setup separately with
the zone time and date or the zone offset. Each zone can be setup to any time and/or date.
In practice, the Master is usually set to the GMT ( or UTC ) or the Local time / date.
An
external Master clock
may be used to synchronize the entire system with, for instance, the
Atomic clock
time or the
building network time. This external Master may be a PC or any other Master clock that has a compatible serial data output.
NOTE:
To prevent unauthorized access to the clock programming, the function
Fn 62
may be enabled,
ALL
COMMUNICATION
with the clock via the remote control is then
DISABLED
. To regain the remote control access
remove the power momentarily and disable
Fn 62
within the first 33 seconds
Similarly, the function
Fn 63
can me used to
Partly Disable
the access via the remote control. Here, only a limited
timer and dimming operation will be allowed.
NOTE
that the above functions may be also used when setting up the time zones to prevent the master or other
zones from being altered accidently while operating the remote control. Usually however, one clock at a time only
should be powered up when redefinig the zone clocks settings or, when several multi-zone clocks are housed in the
same enclosure, a dedicated switch on the side of the enclosure will alllow to select the zone that is to communicate
with the remote control.
There are two possible configurations that may be used in the Multi-Zone system:
NOTE:
The DEDICATED MULTI-ZONE NETWORK with the Seconds SYNC FUNCTION Enabled
( Fn 50, Fn 51 )
Option # 741 has been discontinued
in Firmware Versions 25 and higher.
Type “A”
MULTI-ZONE NETWORK with ABSOLUTE ZONE OFFSET
( Fn 50 )
This configuration requires at least one of the following wired or wire-less serial communication
options installed:
# 725, 725RF, 725ETH, 725NTP, 725GPS, 725232, 724RS.
