Lighting Controls Blue Box LT Series Installation, Operation & Maintenance Manual page 108

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: Q What should you be careful never to do with MAIN-
TAIN + TIMER or MAINTAIN + BLINK groups?
: A Never have the same relay in more than one MAIN-
TAIN + TIMER or MAINTAIN + BLINK group .
: Q What does the "NO AUTOMATIC ON" setting in
a MAINTAIN+TIMER or MAINTAIN+BLINK group
do?
: A It makes it so that when you turn ON the group, the
relays don't come on – only the group status changes
to ON and the relay timers are disabled .
: Q Why would someone want to use "NO AUTOMAT-
IC ON"?
: A So they can take disable relay-timers without actually
turning the relays on . For example, if the customer
wants to turn lights on with a switch early in the
morning, and not have them automatically shut off
after an hour (timer mode), they would need to turn
the MAINTAIN + TIMER group on with a schedule .
However, if they don't want the actual lights to turn
on until they use a switch, they would set the group
to "No Auto On" . This would take the relays out of
Timer mode, but not turn them on with the sched-
ule . This saves energy until someone enters the room
and switches the lights on .
: Q When must a switch button be programmed to op-
erate a group instead of just operating the relays di-
rectly?
: A When you want the switch to operate more than 8
relays, the system will require you to make them into
a group .
: Q How do you toggle a group on and off using a single
switch button?
: A You can't . Groups cannot be toggled . If you want to
turn more than 8 relays on and off with a switch, you
need to use two buttons and two groups: one MO-
MENTARY On and one MOMENTARY OFF .
: Q What kind of group would you normally NOT assign
to a momentary switch?
: A You normally do NOT assign any of the maintain-
THE BLUE BOX LT FREQUENTLY ASKED QUESTIONS
type groups (MAINTAIN,
MAINTAIN+BLINK) to a switch . The reason for this
is that switch buttons turn maintain groups ON when
the button is held down and OFF when the button
is released .
Having to hold the button down to keep lights on is
not generally useful!
: Q If you are having a photocell control more than 8
relays, what type of group would you assign to the
photocell?
: A You would normally use a maintain-type group . Re-
member that only maintain-type groups can be turned
on AND off . If you want the photocell to turn lights
ON when it is dark and OFF when it is bright, the
easiest way is to use a maintain group .
: Q When would you use a momentary-type group with
a photocell?
: A When you only want the photocell to turn the relays
OFF, or only want it to turn relays ON .
Even when using a schedule to turn the lights off (for
example at 11:00pm), one would usually program the
Photocell as "Maintain" . This ensures the lights turn
off at dawn in the event that an override "ON" com-
mand switched the lights on during the night .
MAINTAIN+TIMER,