Ps873 power supply pdf

Ps873 power supply including 8712, 8712q, 8734tdao option boards. Terminate the wires for each channel being used as shown in fig. These advantages include significant advancements in the areas of size and weight reduction, improved efficiency, and. Suppose you suspected a failedopen diode in this power supply circuit. Installation ps902 power supply instructions 44487023. This is important because the electronics inside of a. Because field conditions vary and wiring applications are not certified, power supplies cannot be returned. The ps873 can be ordered with three standard options.

They offer the designer several important advantages over linear seriespass regulators. The power input has a fuse to prevent system damage if the current limit is exceeded. Each individual channel may be wired with the terminal bock connected to the board or removed for easier access. Figure 1 compares a real power supply to this ideal one and further illustrates some power supply terms. Ps873 power supply 120vac 2amp cable to chexit device e7500 electric mortise lock fs horn control contact dps fire normally closed contact typical wiring continued 3 x 14 ga 2 x 2 x 18 ga 2 x 18ga 2 x 18 ga plus power if required 2 x 18 ga 2 x ga 5 x 18 ga to fire alarm contact power supply chexit x e7500fse mortise lock dps junction. A power supply is a device that supplies power to another device, at a specific voltage level, voltage type and current level. Power supplies series ps871 the series ps871 power supply is designed to operate electric locking or monitoring exit devices or up to four chexit controlled exit devices. A regulated power supply that acts to maintain its output voltage constant in spite of changes in load, line, temperature, etc. Failure to do so may result in damage to your power supply or system, and may cause serious injury or death.

Do not open the power supply case or attempt to repair the power supply. A complete chexit system requires a ps873 power supply and a power transfer a request to exit switch is built in to detect when someone attempts to exit. Electronic foldback of current on main power supply board. The ps914 replaces the ps873 power supply because field conditions vary and wiring applications are not certified, power supplies cannot be returned. Lowvoltage ac power supply 6 6 12rectifier assembly filter capacitor incidentally, the low voltage ac power supply is nothing more than a stepdown transformer with a centertapped secondary. Key lock secures the cover to eliminate tampering and provides safety. Ni ps17 power supply user manual and specifications. At tdklambda, a power supply is more than just an electronic device. Ps873 power supply plus 8712, 8712q, 8734tdao option boards 12 route two wires from qel exit device to power supply qel exit device qel electrical load ps900series power supply with 900series option boards installed ept shown.

When the fire alarm contact is open, power to locks or other. Factory and field configurable to suit specific needs. The ps873 option cards also can not be used in the newer ps900 series power supplies. For complex digital systems, use dedicated power supply sequencers. Schlage electronics ps902 2amp class 2 power supply with. Suppose a power supply is energized by an ac source of 119 v rms. The old ps873 and ps8732 have been replaced by models ps914 and ps9142rs respectively. Power supply sequencing reverse power supply battery not all power supplies are created equal.

Pm300ho x x x x x pm300ho pm300ho x x nd nd nd x x x x x nd nd x x pm300ho x x x x x pm300ho pm300ho x x nd nd nd x x x x x nd x x nd no data as of 614 x tested and power supply will not support unit. Battery backupprovides two hours backup power at full load during a a. An ideal power supply would be characterized by supplying a smooth and constant output voltage regardless of variations in the voltage, load current or ambient temperature at 100% conversion efficiency. Restoring power is field selectable for automatic or manual. This is a massive power supply thats in a pc, usually you dont see this unless you open up the pc and look inside for the big metal box. Component placement and wiring requirements, single door external alarm power supply ept junction box dps chexit external inhibit 3 x 14 ga 2 x 2 x 18 ga plus power if required 2 x 18 ga 8 x 18 ga plus 2 x 2 x 18.

Do not use the power supply near water, or in high temperature or high humidity environments. It changes in most cases reduces the level of supply to a value suitable for driving the load circuit. Ps873 power supply 120vac 2amp cable to chexit device e7500 electric mortise lock fs horn control contact dps fire normally closed contact typical wiring continued 3 x 14 ga 2 x 2 x 18 ga 2 x 18ga 2 x 18 ga plus power if required 2 x 18 ga 2 x ga 5 x 18 ga to fire alarm contact power supply chexit x e7500fse mortise lock dps. Thus, for a change in load resistance, the output voltage of this type of supply remains constant while the output current changes by whatever amount necessary to accomplish this. For protection against risk of fire, replace fuse with same type and rating.

Ps873 ps861 ps58 ps56 ps54 ps2bb ps2 632rf power supplies. The power supply acts as a stepdown transformer converting high voltage ac into 5, 12, and 3. How to order standard use prefix qel, example qel99l. All these power supplies have one thing in common they take high voltage 120v or 220v ac power and regulate or convert it down to say 12v or 5v dc. Calculate the unloaded dc output voltage for this supply assume 0. The old ps873 and ps873 2 have been replaced by models ps914 and ps9142rs respectively. A push pad will cause this switch to start an irreversible alarm cycle remote alarm a set of relay contacts rated 1 ampere, 24vdc are provided to give external alarm indication. The newer ps900 option cards can not be used in the ps873 power supplies. Fire alarm provides input for a normally closed fire alarm contact. The switching power supply continues to increase in popularity and is one of the fastest growing markets in the world of power conversion. The series ps873 power supply is designed to operate a wide variety of electrical products. Handicap door integration with ps 873 power supply. Pm300 series will not work with first choice sp500 power supply. The following boards are not available with the new ps914rfk.

Options include keylock cover andor sealed lead acid battery pack. Electronic power limiting foldback circuit for ac current overload protection. Power supply, aiphone products product information product dimensions 8. Install vd2 board onto either ps873 receptacle as shown in fig. It delivers a highly filtered and regulated clean output to protect downstream devices. Attached tables are power supply cross reference, power supply option board and power supply option board compatibility.