Furman Sound PS-PRO II manual remote control, Momentary vs. maintained contact switching

PS - PRO II - POWER CONDITIONER / sequencer

local control only, and a jumper is installed on JMP1 with no switch connected to the PS- PRO II’s terminal strip, then a jumper should be connected between the REM and +12V terminals. Otherwise, turning the front panel key switch to the REM position will turn the PS-

PRO II ON.

remote control

When the PS-PRO II’s front panel key lock switch is in the REM position, it can be controlled by one or more switches in remote locations. In the most basic configuration, only two wires and an SPST switch are needed to initiate an ON or OFF sequence. The switch may be either

a momentary or a maintained-contact type,

depending on a jumper setting inside the PS-

PRO II. If an additional wire is used, an LED may

terminals (PCB REV D and later) labeled as:

JMP1 (Default) (MAINT ON) , when the REM and +12V terminals are tied together, the PS-PRO II will sequence OFF.

JMP2 (MOMENTARY), when the REM and +12V terminals are momentary tied together, the PS- PRO II will sequence ON or OFF.

JMP3 (MAINT OFF), when the REM and +12V terminals are tied together, the PS-PRO II will sequence ON.

JMP4 (REM TO GND = ON), when the REM and GND terminals are tied together, the PS-PRO

IIwill sequence ON (Note: JMP1 must have a jumper installed).

JMP5 spare jumper holder.

also be installed at the remote end to indicate

that the power is on.

Momentary vs. maintained contact switching

	JMP
1	2	3	4

REM TO +12V = OFF

MOMENTARY MODE

REM TO +12V = ON

REM TO GND = ON

An on-off switch of either kind may be used to actuate the PS-PRO II’s remote operation. Maintained switches, such as most toggle switches and push-on/push-off button switches, (including the Furman RS-1 key lock switch), stay open until switched, and then remain closed until switched again. Momentary switches, usually pushbutton types like the Furman RS-2 (which also provides a locking key switch), are normally open and stay closed only as long as the button is pressed.

Maintained switches are generally the most convenient when there is only one remote location. When more than one location is required, momentary switches offer the advantage of

aturn-on or turn-off sequence which may be started from any location.

The PS-PRO II main circuit board has 5 pairs of

JUMPER SETTING CHART

PS-PRO II units come factory-set for maintained operation (jumper is installed on JMP1). They may be easily converted to other operating modes by moving jumper plug/plugs on the PS- PRO II’s circuit board. To do this, first disconnect the unit from AC power. Remove the 12 screws that secure the top cover. Simply install the jumper plugs to the desired mode of operation. Reattach the top cover.

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