The connection of the REM terminal to the GND terminal initiates an ON sequence. Disconnecting initiates an OFF sequence.
Momentary Mode
In Momentary Mode (jumper plug installed on JMP2) the PS-PRO HT has “memory” — it only needs a momentary signal from the remote switch to change its state from ON to OFF. When first plugged in (or after power is lost and reapplied for any reason) the stored state is OFF. The unit will stay off until sequenced ON by a momentary connection of the REM IN terminal to +12V (the key switch must be in the REM position). The sequence
starts on the rising edge of the signal.
One or more remote momentary switches that may be connected to the terminal strip in the rear.
The “memory” is independent of the key switch. This means that even if the unit is sequenced off by turning the key lock switch to OFF, when the key lock switch is turned back to REM, the unit will sequence back on. The unit “remembers” its state until the incoming power is lost, in which case it would default back to OFF.
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The front-panel key lock switch is not the primary means of control in the momentary mode and should normally be left in REM. It may be a useful secondary means of control in the rare case of having several PS-PRO HT’s in parallel if there is some reason to shut down one unit without affecting the others.
Because it is a maintained-contact switch, the RS-1 is not an appropriate remote switch for the PS-PRO HT 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 HT to handle loads that exceed 20 amps. To control them remotely with one or more remote switches, connect the REM to REM, +12V to +12V, GND to GND terminals of all units together. 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 HT, as discussed in the sections above. To avoid tripping house breakers, the power input for each PS-PRO HT 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 HTs consult a qualified electrician.
If multiple PS-PRO HTs are controlled by one or more momentary remote switches, all of the PS-PRO HTs will change state (from on to off or vice versa) on each rising edge of the voltage on the REM IN terminal. The key lock switches on each unit’s front panel will turn off an individual unit that is currently on without affecting the
