PS-PRO II - POWER CONDITIONER / SEquENCER PS-PRO II - POWER CONDITIONER / SEquENCER F E aT u R E S n INTRODuCTION Thank you for purchasing the PS-PRO II, and congratulations on your choice. The Series II power conditioners feature Furman's revolutionary Series Multi-Stage Protection Plus (SMP+) circuit, as well as our exclusive Linear Filtering Technology (LiFT). Together, these technologies comprise, without question, the world's most advanced and comprehensive transient voltage surge suppressor / conditioner. SMP+ (Series Multi-Stage Protection Plus) non-sacrificial surge suppression -- the most comprehensive protection available anywhere! LiFT (Linear Filtering Technology) with zero ground contamination Extreme voltage shutdown BNC connector on the rear panel allows for attachment of a gooseneck lamp to illuminate the rear of your rack Power Status LED's indicate which outlet groups have power Remote operation allows turn-on and turn-off at a distance simply by connecting a momentary or maintainedcontact switch (and LED if desired) Multiple units may be linked to handle higher currents and/or more than three delay groups Six switched outlets (on rear panel), and three unswitched outlets (one front, two rear) Ten foot 12 AWG heavy duty power cord n n n SMP+ (Series Multi-Stage Protection Plus) n n Furman's SMP+ surge suppression virtually eliminates service calls. Traditional surge suppression circuits "sacrifice" themselves when exposed to multiple transient voltage spikes, requiring the dismantling of your system and repair of your surge suppressor. With Furman's SMP+, however, damaging transient voltages are safely absorbed, clamped, and dissipated. Unique to Furman's SMP+ is its unparalleled clamping voltage. While other designs offer clamping voltages that are well above 330 Vpk, SMP+ clamps at 188 Vpk, (133 VAC RMS). This unprecedented level of protection is only available with Furman's SMP+ technology. Additionally, Furman's trusted over-voltage circuitry protects against all too frequent accidental connections to 208 or 240 VAC, by shutting off the incoming power until the over voltage condition is corrected. [For E versions: Furman's SMP+ clamps at 376 VpK, (266 VAC RMS.)] n n n n Three year limited warranty 1 PS-PRO II - POWER CONDITIONER / SEquENCER lIFT (linear technology) f i lt e r i n g is particularly suited to applications where large installations must be switched by inexperienced personnel. The PS-PRO II is controlled by a front panel key-operated switch to provide security from non-authorized users tampering with the system. The switch has three positions: OFF, ON, and REM, allowing for local or remote control. With remote control, one or more PS-PRO II's may be installed in remote locations with on/off control and LED monitoring via low-voltage control wires. Besides its power sequencing capabilities, the PS-PRO II contains many other conditioning and protection features. Each aspect of its functioning will be discussed in the next sections. Unfortunately, traditional AC filter - conditioners have been designed for unrealistic laboratory conditions. Prior technologies, whether multiple pole filter or conventional series mode, could actually harm audio and video performance more than they help, due to the resonant peaking of their antiquated, non-linear designs. Under certain conditions, these designs can actually add more than 10 dB of noise to the incoming AC line! Worse still, lost digital data, the need to re-boot digital pre-sets, or destroyed digital converters are frequently caused by excessive voltage spikes and AC noise contaminating the equipment ground. Furman's SMP+ with LiFT takes another approach, ensuring optimal performance through linear filtering and no leakage to ground. I N S Ta l l aT I O N RECO mmEND aTIONS In audio/video installations, we recommend that power amps receive power last -- plug them all into Delay 3 or divide them into two groups and plug one group through Delay 2 and the other through Delay 3. Low level equipment such as mixers and signal processors should use Delay 1. Equipment incorporating clocks or timers such as VCR's, or equipment that must respond to wireless remote actuation, should use the unswitched outlets. We suggest keeping the front panel's unswitched outlet free for equipment that is only in use temporarily. The overall capacity of the PS-PRO II is 20 amps. This refers to the combined steady-state current drawn by all devices plugged into all of its nine outlets. If this combined current level exceeds 20 amps at any time, the circuit breaker will trip, cutting off power to your rack. If this occurs, you must reduce the load by unplugging one or more units from the PS-PRO II. Then push the black button on the circuit breaker (on the front panel) to reset it. DESCRIPTION The PS-PRO II is a power sequencer, meaning it is capable of powering a rack full of equipment in three steps separated by timed delays. It is useful whenever various kinds of equipment must be powered up or down in groups, rather than simultaneously. In audio 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 simultaneous powering would result in a loud, annoying, and potentially destructive "pop" reaching the speakers. And in any large system whose components 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 can cause circuit breakers to trip, even though the steady-state currents are not excessive. Power sequencing 2 PS-PRO II - POWER CONDITIONER / SEquENCER Although 20 amps is an absolute limit, the PS-PRO II will allow you to come as close as possible to using the full 20 amps, because with power sequencing, the risk of tripping the breaker is greatly reduced. The PS-PRO II handles large but temporary inrush currents in stages, rather than simultaneously, allowing each stage to settle to its steady-state current draw before the next stage is powered. Outlets and Plugs: The PS-PRO II's four rear panel outlet pairs are standard 120V, 20A duplex types. These outlets are widely spaced, to accommodate one bulky plug-mounted "wall wart" power supply in each without covering up an adjacent outlet. The front panel outlet is limited to 15 amp use. The PS-PRO II also uses a 20 amp line cord, identified by the perpendicular blades on the plug. In 20 amp products, use of a plug of this type is required for UL safety certification. It is compatible with 20 amp outlets (such as those on the rear panel of the PS-PRO II). For more information about 20 amp plugs, see the information sheet "What Kind Of Plug Is This, Anyway?" accompanying this manual, or request a copy from Furman. front panel Delay Adjust control. The Delay Adjust control, which can be set using a screwdriver, controls the total delay time between Delay 2 and Delay 3. For example, if the Delay Adjust is set for 30 seconds, the Delay 1 outlets will go on immediately, Delay 2 will power 15 seconds later and Delay 3 will power 15 seconds after Delay 2, for a total delay time of 30 seconds. The order is reversed for the OFF sequence. For example, when an OFF sequence is initiated and the Delay Adjust control is set at 60 seconds, Delay 3 outlets lose power immediately, Delay 2 outlets lose power 30 seconds later and Delay 1 outlets lose power 30 seconds after Delay 2. The total delay time is 60 seconds. In the event of a power outage, of course all equipment plugged into a PS-PRO II will lose power simultaneously. However, when power is restored, the delayed outlet groups will again turn on in the usual delayed sequence (if set to maintained on mode). POWER SEquENCINg F E aT u R E S The PS-PRO II rear panel provides one unswitched and three switched outlet pairs. The switched outlet pairs are labeled Delay 1, Delay 2, and Delay 3. (The other pair of outlets on the rear panel and an additional single outlet on the front panel are unswitched.) Here's how the PS-PRO II works: When an ON sequence is initiated, power is immediately applied to the Delay 1 outlets. Power is then applied to Delay 2 and Delay 3 outlets per the 1-60 second total delay setting selected with the ON or OFF SEquENCINg The method of initiating an ON or OFF sequence depends on whether the unit is to be controlled locally or remotely. If remotely, it further depends on the type of switch or switches used (momentary or maintained). LOCAL CONTROL For local control, an ON sequence is initiated by turning the key switch to the ON position, and an OFF sequence by turning the key switch to OFF position. The START ON-OFF SEQUENCE pushbutton is not normally used in local operation. NOTE: If the PS-PRO II is to be used under 3 PS-PRO II - POWER CONDITIONER / SEquENCER local control only, and a jumper is installed on JMP1 with no switch connected to the PSPRO 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 PSPRO II ON. 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 PSPRO 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 II will sequence ON (Note: JMP1 must have a jumper installed). JMP5 spare jumper holder. JMP 1 2 3 4 REM TO +12V = OFF MOMENTARY MODE REM TO +12V = ON REM TO GND = 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 PSPRO II. If an additional wire is used, an LED may also be installed at the remote end to indicate that the power is on. MOMENTARy vs. MAINTAINED CONTACT SWITCHING 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 a turn-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 PSPRO 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. (continued on page 7) 4 PS-PRO II - POWER CONDITIONER / SEquENCER FRONT PaNEl REaR PaNEl lIgHT SWITCH: All Series II units feature a rear rack BNC socket which will accept any 12 VAC (0.5A) gooseneck lamp assembly, (such as the Furman GN-LED or GN-I). Simply slide the BNC plug over the socket and rotate clockwise until the connector snaps into the locked position. The rear rack lamp can be powered on or off with the rear light power switch located on the far left of the front panel. STaRT ON/OFF SEquENCE: This pushbutton switch is used only when the key lock switch is in REM position and the PS-PRO II is in Momentary Mode. It then acts the same as any other remote momentary switch that may be connected to the rear panel terminal strip. If the switched outlets are on, pushing it begins an OFF sequence. If they are off, pushing it begins an ON sequence. Do not use this switch when in Maintained Mode. PROTECTION OK: This LED is normally on when the power to the PS-PRO II's outlets is switched on. It monitors the integrity of the protection devices and reports if the protection is compromised. If an extremely large spike is encountered that exceeds the PS-PRO II's capacity, the main group of input protectors will blow an internal fuse, causing the indicator to go out. If this LED is not lit when the power switch is on, full protection is not functioning. Spike protection may ...