P S - 8 R - P O W E R C O N D I T I O N E R / S E q u E N C E R
description
The PS-8R Power Sequencer is needed whenever
various kinds of equipment must be powered up or
down in groups, rather than all simultaneously. In au-
dio systems, sequenced powering is often necessary
to allow turn-on transients from low level
amplifiers and processors to settle down before
any power amps are turned on, because simultane-
ous powering would result in a loud, annoying, and
potentially destructive “pop” reaching the
speakers. And in any large system whose com-
ponents present an inductive load to the AC
line (including electric motors, power supplies,
and power amplifiers of all kinds), sequenced
powering can avoid excessive inrush currents
that cause circuit breakers to trip even though
the steady-state currents are not excessive.
power
sequencing
features
using the PS-8R is a simple and inexpen-
sive way to apply and remove power in a con-
trolled, repeatable, foolproof 3-step sequence.
It is ideal when large installations must be
switched by inexperienced personnel.
The PS-8R provides three outlet pairs labeled Delay
1, Delay 2, and Delay 3, that receive power ap-
proximately 1/2, 5, and 10 seconds, respectively,
after the front panel switch is switched to “ON.”
When switched to “OFF,” the sequence is reversed,
with Delay 3 losing power after approximately 1/2
second, Delay 2 after 5 seconds, and Delay 1 after
10 seconds. See the rear panel illustration on page
3. The turn-on delay intervals are factory preset
at these durations, but may be altered by means
of an internal trimpot adjustment (see “Adjusting
the Delay Intervals” for details). In addition to the
features
Power-up in three delayed outlet groups
•
Power-down reverses sequence
•
Triple-mode varistor spike
•
and surge suppression
RFI / EMI filtering with multi-stage filter
•
Power Status LED’s indicate which
•
outlet groups have power
Mains Wiring indicators moni-
•
tor wiring integrity, show Nor-
mal and five kinds of faults
Rated 15 amps
•
Remote option allows turn-on and
•
turn-off at a distance simply by con-
necting a momentary or maintained-
contact switch (and LED if desired)
Multiple units may be linked to
•
handle higher currents and/or
more than three delay groups
Three pairs of switched out-
•
lets on rear panel
Three unswitched outlets
•
(one front, two rear)
Circuit breaker
•
Ten foot heavy duty A.C. cord
•
Three year limited warranty
•
Congratulations on your purchase of a Furman PS-8R Power Sequencer,
a well-designed, reliable, and simple to use product that will help you avoid
many headaches involved in installing a rack full of complex equipment.
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