Furman Sound PS-PRO II - Manual (Page 9)

P S - P R O I I - 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
contact switch, the RS-1 is not an appropriate
remote switch for the PS-PRO II when it is in
momentary mode. The Furman RS-2 is the
proper choice. Please contact Furman for RS-2
wiring diagrams.
MULTIPLE UNITS
you can use more than one PS-PRO II to handle
loads that exceed 20 amps (16 amps PRO-E). To
control them remotely with one or more remote
switches, connect (in parallel) the REM, +12V
(and optionally GND) terminals of all units. Be
sure that the mode (momentary or maintained) of
all units is set the same. Set all key lock switches
to REM. Connect a single maintained switch or
one or more momentary switches to the nearest
PS-PRO II, as discussed in the sections above.
To avoid tripping house breakers, the power
input for each PS-PRO II should come from a
separate 20 amp AC circuit. If you are unsure
whether your building’s wiring can accommodate
multiple fully-loaded PS-PRO II’s or PS-PRO
IIE’s, consult a qualified electrician.
If multiple PS-PRO II’s are controlled by one
or more momentary remote switches, all of the
PS-PRO II’s will change state (from on to off or
vice versa) on each rising edge of the voltage
on the REM IN terminal. All remote switches or
START ON-OFF SEQUENCE pushbuttons on
any unit’s front panel will toggle all of the units.
The key lock switches on each unit’s front panel
will turn off an individual unit that is currently on
without affecting the other units.
The STATUS lines work the same in either
mode. Each reflects the true state of the unit’s
outlets and is affected by both the “memorized”
state and by the key lock switch. A separate
LED must be used to indicate the status of each
PS-PRO II.
To address the unusual (hopefully rare) instance
when several PS-PRO II’s in parallel fall out of
sync, resulting in some units turning on and
others turning off when a remote button is
pushed, the remote signal line has a special
feature:
Holding the REM line high for at least 4 seconds
(whether by an actual remote switch or by any
unit’s START ON-OFF SEQUENCE switch) will
force all units to the OFF state, putting them
back in sync. This is the only way to re-sync
units other than disconnecting AC power to all
units. Remember: turning any key lock switch
to OFF does not affect the stored state, even
though it will temporarily turn the output of that
unit off. If it is turned back to REM, the PS-PRO
II will sequence back to ON because the stored
state is still ON.
STATUS TERMINAL
The STATUS terminal is an output that may be
used to illuminate an LED at the remote location
indicating that the power is available at the PS-
PRO II’s outlets. If it is high (+5V), the unit is ON
(or at least in the process of sequencing ON); if
low, the unit is OFF (or sequencing OFF). Simply
connect the indicator LED between STATUS
and ground (do not use a series resistor). If the
LED does not light when the switch is in the ON
position, check the polarity and reverse the LED
leads if needed.
CLASS 1
WIRING
+12V
STATUS
REM
GND
OPTIONAL
STATUS
LED
MOMENTARy MODE
8