Furman Sound PS-PRO HT User's Manual
Contents
1. FURMAN MODEL PS PRO HT Home Theater Pro Level AC Power Conditioner Sequencer Featuring 3 Channel Sequencing 20 Amp Capac ity Over Voltage Shutdown and Programmable FEATURES e 20amp 2400 watt rating handles even the largest power amplifiers e Multiple levels of protection compo nents can safely absorb large voltage spikes and provide highly effective RFI EMI filtering e Extreme Voltage Shutdown guards against catastrophically high volt ages e Power Status LED s indicate which outlet groups have power e Remote operation allows turn on and turn off at a distance simply by con necting a momentary or maintained contact switch and LED if desired e Multiple units may be linked to handle higher currents and or more than three delay groups e Three unswitched outlets one front two rear Ten foot 12 AWG heavy duty power cord e Three year limited warranty INTRODUCTION Congratulations on your pur chase of a Furman PS PRO HT Power Conditioner Sequencer The PS PRO HT offers maximum protection from AC line hazards faced by delicate ana log and digital A V equipment The PS PRO HT is a power se quencer meaning it is capable of powering a full systems 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 all simultaneously DESCRIPTION In audio systems sequenced powering is o2. In home theater installations we recommend that power amps or receivers be powered 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 video and audio 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 unswitched outlet free for equipment that is only in use temporarily The overall capacity of the PS PRO HT 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 oc curs you must reduce the load by unplugging one or more units from the PS PRO HT Then push the white button on the circuit breaker on 2 the front panel in to reset it Although 20 amps is an absolute limit the PS PRO HT 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 This is because the PS PRO HT 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 Th
3. See pages 5 6 for more information on the various protection features indicator lights Despite its many protective features you should be aware that the PS PRO HT does not compensate if the AC line voltage itself is high or low i e it does not compensate for brownout conditions If you are in an area particularly prone to brownouts you may benefit from the use of one of Furman s Reference AC Line Voltage Regulators in addition to the PS PRO HT If you do use a voltage regula tor run the raw power line into the regulator first so that the PS PRO HT receives a stabilized voltage to distribute 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 REM or OFF position Remote Control When the PS PRO HT s front panel key lock switch is in the REM position it may 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 e ona dial setting inside thig PS PRO REM and i 2V terminals Otherwise urges f EN ait ALE
4. be easily converted to other operating modes by moving jumper plug plugs on the PS PRO HT s circuit board To do this first disconnect the unit from AC power Remove the four screws that secure the top cover and one screw from the front panel Just install the jumper plugs to the desired mode of operation Reattach the top cover Maintained Mode There are 3 maintained modes of operation REM to 12V OFF jumper plug installed on JMP1 MAINT ON The connection of the REM terminal to the 12V Mite EE Se a AN ee ee ze A REM TO 12Y OFF MOMENTARY MODE REM TO 12V ON Defmult REM TO GND ON JUMPER SETTING CHART conductor anda double throw switch REM to 12V ON jumper plug installed on JMP3 MAINT OFF Defaut Setting The connection of the REM terminal to the 12V terminal initiates an ON sequence Disconnecting initiates an OFF sequence If the cable run is long it is recommended that the REM wire be tied to the PS PRO HT s GND terminal during OFF operation rather than leaving it floating REM to GND ON jumper plugs installed on JMP1 and JMP4 FRONT PANEL AT TEME ELEY O EDUST E 4 WOLYEGE SAU DAN UNSATICA CQTLET CUFKLAT BREE I PIE STE TLS ELE Y LEDS PROTECT EN ar START ON OFF SEQUENCE This pushbutton switch is used only when the key lock switch is in REM posi tion and the PS PRO HT is in Momentary Mode It then acts the same as any other remote momentary switch that m
5. goes out of the acceptable range the PS PRO HT will shut down power to all of its switched outlets simultaneously without observing the OFF delay 5 CE VALE S n cycle and this LED will begin flashing When power returns to within the acceptable range the PS PRO HT will observe its ON delays as it returns power to its switched outlets and this LED will go out NOTE If the mains power is below 80 volts and has caused the PS PRO HT to remove power from its outlets the PS PRO HT will not restore power to its outlets until the mains voltage is more than 90 volts If the mains power is above 140 volts and has caused the PS PRO HT to remove power from its outlets the PS PRO HT will not restore power to its outlets until the mains voltage is less than 130 volts The reason for this is to prevent the power oscillating on and off in marginal conditions DELAY ADJUST This screwdriver adjustable trimpot allows you to set the total turn on turn off delay time from 1 to 60 seconds as explained on page 4 The trimpot adjusts both the on delay and off delay times simultaneously Turn the trimpot clockwise to increase the on and off delay times turn the trimpot counterclockwise to decrease the delay times POWER STATUS DELAY LEDs One green LED is pro vided for each of the three delay stages Each LED lights when power is applied to its corresponding duplex outlet on the rear panel All three LEDs then remain steadily lit until power is rem
6. ney cat at te actuate the PS PRO ATs 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 push button 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 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 For integrating the PS PRO HT into computer control touch screen systems use momentary mode The PS PRO HT main circuit board has 5 pairs of terminals labeled as JMP1 MAINT ON when the REM and 12V terminals are tied together the PS PRO will sequence OFF JMP2 MOMENTARY when the REM and 12V terminals are momentary tied together the PS PRO will sequence ON or OFF JMP3 MAINT OFF when the REM and 12V terminals are tied together the PS PRO will sequence ON JMP4 REM TO GND ON when the REM and GND terminals are tied together the PS PRO HT will sequence ON Note JMP1 must have a jumper installed JMP5 spare jumper holder PS PRO HT units come factory set for maintained operation jumper is installed on JMP3 They may
7. ING O STATUS D OPTIONAL STATUS LED oH H h BI II 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 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 HT To address the unusual hopefully rare instance when several PS PRO HTs in parallel fall out of sync resulting in some units turning on and oth ers turning off when a remote button i
8. adjacent to the power cord SWITCHED DELAYED OUTLETS The PS PRO HT SWITCHED SWITCHED This pair of outlets plus the one on the front panel are on regardless of the switch position POWER UP on POWER DOWN Same as above seconds after the rear panel provides three pairs of switched outlets widely spaced to allow use of equipment with plug in wall wart transformers These switched outlet pairs are labeled Delay 1 Delay 2 and Delay 3 After the front panel switch is thrown to ON Delay 1 outlets receive power instantly Delay 2 outlets re ceive power 1 30 seconds later and Delay 3 outlets receive power 1 30 seconds after Delay 2 outlets are powered When thrown to OFF the sequence is reversed with Delay 3 losing power instantly Delay 2 outlets losing power 1 30 seconds later and Delay 1 outlets losing power 1 30 seconds after Delay 2 outlets are shut down The delay intervals may be altered with the screwdriver adjustable Delay Adjust control on the front panel TERMINAL STRIP Allows one or more switches to be connected to turn the PS PRO HT on and off froma remote location Two and sometimes three wires are needed to install a remote switch see Main tained Mode page 6 If a four conductor cable is used an LED may be installed at the remote end to the switch is turned This pair of outlets goes off approx 10 switch is turned off This pair of outlets c
9. 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 HT 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 you choose with the front panel Delay Adjust control The screwdriver settable Delay Adjust controls the total delay time between the Delay 2 and Delay 3 outlets For example if the Delay Adjust control is set to 30 seconds Delay 1 outlets will go on immediately Delay 2 outlets will receive power 15 seconds after Delay 1 outlets and Delay 3 outlets will receive power 15 seconds after Delay 2 outlets Therefore the total delay time is 30 seconds The order is reversed on an 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 the Delay 2 outlets have been shut off The total delay time is 60 seconds In the event of a power out of course all equip ment plugged into a PS PRO HT will lose power simultaneously However when power is re stored the delayed outlet groups will again turn on in the usual delayed sequence Remains off in Momentary Mode Installation Recommendations
10. ay be connected to the rear panel ter minal 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 HT 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 HT 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 function ing Spike protection may still exist but will have a reduced capacity to absorb current If this LED is not lit please contact the Furman Service Depart ment EXTREME VOLTAGE SHUTDOWN This LED indica tor is normally off It monitors a hazard common in the entertainment industry wiring faults for example accidental connection to 220V The PS PRO HT senses voltages that are so high or low that operation would be impossible under 80V or over 140V and shuts the power down before damage can occur Upon initially applying power to the PS PRO HT this indicator will be lit if the unit is receiving below 80 volts or more than 140 volts and power will not be applied to the PS PRO HT s outlets If the unit has been operating with an acceptable input voltage and then the voltage
11. e PS PRO HT 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 lim ited to 15 amp use The PS PRO HT also uses a 20 amp line cord which can be recognized 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 the ones on the PS PRO HT s rear panel POWER CONDITIONING FEATURES The PS PRO HT provides a very high degree of power conditioning protection for your expensive and delicate equipment What sets Furman s PRO level protection apart from that offered by other conditioners is the quantity quality and configuration of its suppression devices These include MOV s gas discharge tubes fast blow fuses and high voltage capacitors This unique combination can safely absorb and dissipate large spikes from nearby lightning strikes and other sources up to 13 000 amps as well as highly attenuate audible high frequency noise Clean filtered power is provided at all 9 outlets even the unswitched ones The PS PRO HT will even keep itself from turn ing on or will shut down under extreme condi 3 tions if the voltage falls below 80 volts or rises above 140 volts This feature is called Extreme Voltage Shutdown
12. e exclusion of incidental or consequential damages so the above limitations may not apply to you This warranty gives you specific legal rights and you may also have other rights which vary from state to state Warranty claims should be accompanied by a copy of the original purchase invoice showing the purchase date ifa Warranty Registration Card was mailed in at the time of purchase this is not necessary Before returning any equipment for repair please read the important information on service below Service Before returning any equipment for repair please be sure that it is adequately packed and cush ioned against damage in shipment and that itis insured We suggest that you save the original packaging and use it to ship the product for ser vicing Also please enclose a note giving your name address phone number and a description of the problem NOTE All equipment being returned for repair must have a Return Authorization RA Number To get an RA Number please call the Furman Service Department 707 763 1010 Ext 120 or 121 between 8 am and 5 pm U S Pacific Time Please display your RA Number promi nently on the front of all packages PS PRO HT SPECIFICATIONS Current rating 20 Amps 2400 Watts at 120 VAC Input Voltage 85 to 264 VAC without damage Mains Wiring analyzer Detects one normal mode and five fault modes Delay Intervals Total elapsed ON or OFF delay time adjustable from 1 60 seconds with a sin
13. ften 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 results in a loud annoy ing and potentially destructive pop reaching the speakers 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 is particularly suited to applications where large installations must be switched by inexperienced personnel The PS PRO HT 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 REM and ON allowing for local or remote control With remote control one or more PS PRO HT s may be installed in remote locations with on off con trol and LED monitoring via low voltage control wires The PS PRO HT interfaces with computer touch screen systems as well Besides its power sequencing capabilities the PS PRO HT contains many other conditioning and protection features Both aspects of its func tioning will be discussed in the next sections The PS PRO HT rear panel provides one un switched outlet pair and three switched outlet pairs The switched outlet pairs
14. gle trimpot ON sequence Delay 1 outlets go on immediately with switch Delays between outlets 1 and 2 and 2 and 3 adjustable from 1 30 seconds each OFF sequence Delay 3 outlets go off immediately with switch Delays between outlets 3 and 2 and 2 and 1 same as ON delays Remote Switch Screw terminals 2 for switch 2 additional for optional LED 22 ga minimum Spike Protection Modes Line to neutral Clamping Voltage all modes 180V peak Response time 1 nanosecond Maximum surge current 11 000 amps 8 x 20mS pulse Maximum spike energy 550 joules total Noise attenuation Differential mode greater than 60 dB 1 to 200 MHz Dimensions 1 75 Hx 19 W x 10 D Weight 6 lbs 2 7 kg Construction Steel chassis zinc chromate plating 125 brushed and black anodized aluminum front panel glass epoxy printed circuit boards Power Consumption 11 watts Safety Agency Approvals UL C UL 10 091003 D Furman Sound Inc 1997 South McDowell Blvd Petaluma California 94954 6919 USA Phone 707 763 1010 Fax 707 763 1310 Web www furmansound com E mail info furmansound com
15. omes on approx 5 seconds after the switch is turned on This pair of outlets comes on OX 10 seconds after the switch is turned on This pair of outlets goes off approx 5 seconds after the switch is turned off This pair of outlets goes off approx 1 2 second after the switch is turned off indicate that the power is on 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 T E CLASS 1 CWIRING E aiw STATUS OPTIONAL STATUS LED eunit is sequenced o 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 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 CLASS 1 WIR
16. oved During the power down delay cycle each LED goes off as power to its corresponding outlet is removed In addition the Delay 1 LED flashes if a remote switch or the stored state is OFF UNSWITCHED OUTLET This convenient outlet provides power at all times when the PS PRO HT is plugged in and operating under normal power conditions ON REM OFF SWITCH When turned to the ON posi tion this key lock switch initiates an ON sequence applying power to the PS PRO HT s switched out lets When turned to the OFF position it begins an OFF sequence In the REM position the PS PRO HT will accept on off commands from a remote switch or switches that may be connected to the rear panel terminals CIRCUIT BREAKER The overall capacity of the PS PRO HT is 20 amps If the combined steady state current drawn by all devices plugged into all of its nine outlets 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 REAR PANEL UNSWITCHED HT and reset it You can reset the circuit breaker by simply pressing in the button which pops out when tripped However because it is a thermal type you may have to wait a few moments after it trips for it to cool down before it will allow you to reset it UNSWITCHED OUTLETS The PS PRO HT rear panel provides clean filtered power to this pair of un switched outlets
17. s pushed the remote signal line has a special feature Holding the REM line high for at least 4 seconds 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 HT will sequence back to ON because the stored state is still ON The above covers the case of multiple units in parallel all sequences initiate simultaneously See AC Relay Accessory PS REL below fora discussion of wiring multiple units in series 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 HT 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 Effects of Lightning Lightning is a natural phenomenon of over whelming force that represents the most dif ficult circumstance faced by a power protection product The degree of protection a PS PRO HT can offer depends on the intensit
18. t line of defense against lightning should be a lightning arrestor installed on your building s electrical service entrance If your building does not have one contact your local power company or an electri cal contractor to have one installed Three Year Limited Warranty The Furman PS PRO HT is protected by a limited three year warranty covering defects in materials and workmanship provided that the registration card is filled out and returned by the customer Otherwise a one year warranty applies Products must have a proof of purchase from a Furman authorized dealer During this period Furman will make any necessary re pairs without charge for parts or labor Shipping charges to the factory or repair station must be prepaid by the owner return shipping charges via UPS Ground will be paid by Furman This warranty applies only to the original owner and is not transferable Also it does not apply to repairs done other than by the Furman factory or Authorized Repair Stations This warranty shall be cancelable by Furman at its sole discretion if the PS PRO HT unit has been subjected to physical abuse or has been modified in any way without written authoriza tion from Furman Furman s liability under this warranty is limited to repair or replacement of the defective unit Furman will not be responsible for incidental or consequential damages resulting from the use or misuse of its products Some states do not allow th
19. y of the strike If lightning strikes a distant power line and causes a relatively small disturbance to reach your location the spike suppressors in the PS PRO HT will absorb the excess voltage invisibly and harmlessly However if lightning strikes the actual building where the PS PRO HT is installed or somewhere very nearby some damage may be unavoidable due to the ex tremely high voltage and current present If this does occur most likely damage will be limited to the PS PRO HT itself and will affect only certain spike suppression components called varistors or MOV s In this suicide mode the PS PRO HT may sustain minor damage but generally will protect all equipment plugged into it from much more serious and costly damage as long as that equipment is properly grounded Proper grounding requires the use of three prong AC cords and that the building s outlets are actually grounded to earth as specified by the National Electrical Code Any PS PRO HT known to have taken a direct lightning hit should be checked by a qualified technician or the Furman factory to determine of the MOV s need replacement If the PS PRO HT s PROTECTION OK indicator is not lit there is definitely some damage Some spike suppres sion capability may still be available by MOV Bank 2 but there is no guarantee of this For optimum protection you should not rely ex clusively on the PS PRO HT to protect against a direct lightning hit The firs
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