PS-8R II - POWER CONDITIONER / SEquENCER PS-8R II - POWER CONDITIONER / SEquENCER f e at u r e s · IntroductIon 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 what is, 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 (models GN-I, GN-LED) Power-up in three delayed outlet groups Power-down reverses sequence Power Status LED's indicate which outlet groups have power Rated 15 amps Remote option allows turn-on and turn-off at a distance simply by connecting a momentary or maintainedcontact switch (and LED if desired) Four remote configurations: 12V = ON, 12V = OFF, Rem to GND = ON, and Momentary. (See page 5) Multiple units may be linked to handle higher currents and/or more than three delay groups Three pairs of switched outlets on rear panel Three non-delayed switched outlets (one front, two rear) Circuit breaker Ten foot heavy duty A.C. cord Three year limited warranty SMP+ (Series Multi-Stage Protection Plus) 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.)] 1 PS-8R II - POWER CONDITIONER / SEquENCER lIft (linear technology) f i lt e r i n g 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. power sequencIng f e at u r e s The PS-8R II is a simple and inexpensive way to apply and remove power in a controlled, repeatable, fool-proof 3-step sequence. It is ideal when large installations must be switched by inexperienced personnel. The PS-8R II provides three outlet pairs labeled Delay 1, Delay 2, and Delay 3, that receive power approximately 1/2, 5, and 10 seconds, respectively, after the front panel sequence 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" descrIptIon for details). In addition to the delayed outlets, a single front panel outlet and a rear panel pair are The PS-8R II Power Sequencer is needed powered through the main power on/off switch. when equipment must be powered up or down All rear panel outlets are standard 120V, 15A in groups, rather than simultaneously. In audio duplex types. systems, sequenced powering is often necessary to allow turn-on transients from low level In the event of a power outage, all equipment amplifiers and processors to settle down before plugged into a PS-8R II will lose power simultaany power amps are turned on, because simul- neously. However, when power is restored, the taneous powering would result in a loud, annoy- delayed outlet groups will again turn on in the ing, and potentially destructive "pop" to reach the usual delayed sequence. speakers. In any large system whose components We recommend that power amps receive power present an inductive load to the AC line (including last -- plug them all into Delay 3 or divide them electric motors, power supplies, and power ampliinto two groups and plug one group into Delay 2 fiers of all kinds), sequenced powering can avoid and the other into Delay 3. Low level equipment excessive inrush currents that cause circuit breaksuch as mixers and signal processors should ers to trip even though the steady-state currents use Delay 1. are not excessive. Equipment incorporating clocks or timers such as VCR's, or equipment that must respond to wireless remote actuation should use the 2 PS-8R II - POWER CONDITIONER / SEquENCER BNC Connector for rear light (models GN-I or GN-LED) switched outlets unswitched outlets. We suggest keeping the front delay interval by making an internal adjustment panel unswitched outlet free for equipment that to the PS-8R II. However, due to the risk of electric shock, this procedure should only be is only in use temporarily. done by a qualified technician. The overall capacity of the PS-8R II is 15 amps. This refers to the combined steady-state current unplug the PS-8R II and remove its top cover by drawn by all devices plugged into all of its nine unscrewing the 10 top panel screws that secure it. outlets. If this combined current level exceeds The delay adjustment is Trimpot VR1, located on 15 amps at any time, the circuit breaker will trip, the printed circuit board near the front left corner. cutting off power to your rack. If this occurs, you It is the only trimpot on the board. It is equipped must reduce the load by unplugging one or more with a thumbwheel for easy adjustment. The units from the PS-8R II. Then push the button on range of adjustment of the delay interval is from the circuit breaker (on the front panel) down and a minimum of about 1 second to a maximum of about 7 seconds. in to reset it. Although 15 amps is an absolute limit, the PS-8R II's power sequencing capability will allow you to come as close as possible to using the full 15 amps, because the risk of tripping the breaker is greatly reduced. This is because the PS-8R 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. 220/240V VERSION (WITh "E" SuFFIx ONly) The model PS-8R II E is intended for use in countries with nominal 220 to 240 volt AC lines. It is identical to the PS-8R II except the rear panel outlets are the internationally-accepted IEC-320 connectors. It is rated at 10 amps. ADjuSTING THE DELAy INTERVAL o t h e r f e at u r e s The delay interval (the time between the turn-on or turn-off of outlets 1 and 2, or 2 and 3 -- not on/off rocker switch: 1 and 3) is factory preset at approximately 5 This 15 amp capacity main power switch is speseconds. It is possible to lengthen or shorten the cifically designed to stand up to the enormous high inrush current demands of many Power 3 PS-8R II - POWER CONDITIONER / SEquENCER Amplifiers. Additionally, the semi-transparent rocker lights when switched to the "ON" position. (E-versions feature 10 amp capacity) extreme Voltage shutdown Indicator: This LED is normally off. It monitors a hazard common in the entertainment industry: wiring faults ­ for example, accidental connection to 220VAC where 120VAC is expected, or an open neutral from a 208 or 240VAC feed. The Series II SMP+ circuit senses voltages that are so high that operation would be impossible and shuts the power down before damage can occur. upon initially applying power to these units, the Extreme Voltage indicator LED will light if the input voltage is above the extreme voltage cutoff, and power will not be applied to the unit's outlets. If the unit has been operating with an acceptable input voltage and subsequently that voltage exceeds 135V, it will shut off power to the outlet and the Extreme Voltage LED will light. (E version: over voltage shut down is 260 VAC and guards against open neutral and accidental connection to 300+ VAC) protection oK Indicator: Although the Furman SMP+ circuit assures protection from transient voltage spikes and surges, nature has a way of occasionally creating electrical forces that are beyond the capabilities of any TVSS device to absorb without some degree of damage. In the rare instance that this occurs, the green "Protection OK" lED indicator located on your front panel will dim. If this happens, some level of protection from voltage surges will remain, but the Furman's clamping voltage rating will be compromised. The unit must be returned to Furman Sound, or an authorized Furman service center for repair. NOTE: If the mains power is above the high cutoff voltage and has caused the unit to remove power from its outlets, it cannot restore power without the operator manually turning the unit off, then on again. Avoid turning the unit back on, without first checking the source of the problem, and perhaps changing the AC source. 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. The Series II's front panel lED lamps must be replaced by qualified Furman service personnel. reMote swItchIng (PS-8R II & PS-8R II E) In the most basic configuration, only two wires and an SPST switch are needed to initiate remote ON or OFF sequence. The switch may be either a momentary or maintained-contact type. If a third & fourth wire are used, an LED may also be installed at the remote end to indicate that the power is on. MAINTAINED VS. MOMENTARy CONTACT SWITCHING Maintained switches, such as most toggle switches and push-on/push-off switches (including the Furman RS-1), stay open until switched and then remain closed until switched again. Momentary switches, usually pushbutton types like the Furman RS-2, are normally open and stay closed only as long as the button is pressed. An on-off switch of either kind may be used to actuate the PS-8R II's remote operation. 4 PS-8R II - POWER CONDITIONER / SEquENCER Maintained switches are generally most convenient when there is only one remote location. When more than one switch location is required, momentary switches allow the sequence to be started from different locations. PS-8R II main circuit board has 5 pairs of terminals (PCB REV F and later) labeled as: JMP1 (REM TO +12V = OFF, DEFAuLT ), when the REM and +12V terminals are tied together, the PS-8R II will sequence OFF. JMP 1 2 3 4 REM TO +12V = OFF MOMENTARY MODE REM TO +12V = ON REM TO GND = ON JUMPER SETTING CHART jMP2 (MOMENTARy), when the REM and +12V JMp1) terminals are momentary tied together, the PS-8R Connection of the REM terminal to the +12V II will sequence ON or OFF. terminal initiates an OFF sequence. Disconnecting JMP3 (REM TO +12V = ON), when the REM and initiates an ON sequence. If the cable run is long, +12V terminals are tied together, the PS-8R II will it is recommended that the REM wire be tied to the PS-8R II's GND terminal during ON operation sequence ON. rather than leave it floating. This will require the JMP4 (REM TO GND = ON), when the REM and use of a third conductor and a double-throw GND terminals are tied together, the PS-8R II will switch. sequence ON (Note: jMP1 must have a jumper reM to +12V = on (jumper plug installed on installed). JMp3) jMP5, spare jumper holder. Connection of the REM terminal to the +12V The PS-8R II unit comes factory-set for maintained terminal initiates an ON sequence. Disconnecting operation (jumper is installed on jMP1). It may be initiates an OFF sequence. If the cable run is long, easily converted to other operations by moving it is ...