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PS900 Series Schlage Electronics and Von Duprin Power Supplies Demystified

Von Duprin and Schlage Electronics are divisions of Ingersoll Rand. Both are major manufacturers of power supplies for use with electric locking systems and access control. As of January 1st, 2011, Ingersoll Rand discontinued two of their power supply product lines, the PS800 series Von Duprin and the Schlage Electronics 500 series, and merged them into the new PS900 series.

A split in power supply branding may or may not remain, depending on what document you are looking at, but whether they say they are Schlage or Von Duprin, they are all the same PS900 series.

Here is the lineup:

PS902 – 2 Amp output at 12 or 24VDC, field selectable

Compatible with these option boards:

  • 900-BBK: Battery Backup – back up power in case of power outage, includes batteries
  • 900-FA: Fire Alarm – relay for interface with fire alarm panel  – wires to main board
  • 900-2Q: 2 Relay QEL control Board – to run 2 Von Duprin QEL devices
  • 900-4R: 4 Relay Output Board – four relay outputs to operate 4 electric locking devices, not QEL or EL
  • 900-4RL: 4 Relay Logic Board – for man trap or security interlock systems or up to 4 QEL devices
  • 900-8F: Fused 8 Zone Distribution Board – 8 outputs, fused for circuit protection
  • 900-8P: PTC 8 Zone Distribution Board – 8 outputs, circuit breaker protected

PS902 can accommodate 1 of the above option boards in addition to the 900-FA option and battery backup.

For use with electric locks and with Von Duprin Quiet Electric Latch retraction (QEL) exit devices, but NOT with Von Duprin electric latch retraction (EL) exit devices.

PS904 – 4 Amp output at 12 or 24VDC, field selectable

Compatible with these option boards:

  • 900-BBK: Battery Backup – back up power in case of power outage, includes batteries
  • 900-FA: Fire Alarm – relay for interface with fire alarm panel  – wires to main board
  • 900-2Q: 2 Relay QEL control Board – to run 2 Von Duprin QEL devices
  • 900-4R: 4 Relay Output Board – four relay outputs to operate 4 electric locking devices, not QEL or EL
  • 900-4RL: 4 Relay Logic Board – for man trap or security interlock systems
  • 900-8F: Fused 8 Zone Distribution Board – 8 outputs, fused for circuit protection
  • 900-8P: PTC 8 Zone Distribution Board – 8 outputs, circuit breaker protected

PS904 can accommodate up to 2 option boards and battery back up.

Note:  no plug-in for fire alarm relay on main board.  900-FA is only usable with the PS904 if used with an option board.

For use with electric locks and with Von Duprin Quiet Electric Latch retraction (QEL) exit devices, but NOT with Von Duprin electric latch retraction (EL) exit devices.

PS906 – 6 Amp output at 12 or 24VDC, field selectable

Compatible with these option boards:

  • 900-BBK: Battery Backup – back up power in case of power outage, includes batteries
  • 900-FA: Fire Alarm – relay for interface with fire alarm panel  – wires to main board
  • 900-2Q: 2 Relay QEL control Board – to run 2 Von Duprin QEL devices
  • 900-2RS: 2 Relay EL Control Board – to run up to 2 Von Duprin EL devices
  • 900-4R: 4 Relay Output Board – four relay outputs to operate 4 electric locking devices, not QEL or EL
  • 900-4RL: 4 Relay Logic Board – for man trap or security interlock systems
  • 900-8F: Fused 8 Zone Distribution Board – 8 outputs, fused for circuit protection
  • 900-8P: PTC 8 Zone Distribution Board – 8 outputs, circuit breaker protected

PS906 can accommodate up to 3 option boards, fire alarm interface (with option board) and battery back up.

For use with electric locks and with up to 6 Von Duprin Quiet Electric Latch retraction (QEL) exit devices, but NOT with Von Duprin electric latch retraction (EL) exit devices.

PS914 – 4 Amp output at 12 or 24VDC, field selectable

Compatible with these option boards:

  • 900-BBK: Battery Backup – back up power in case of power outage, includes batteries
  • 900-FA: Fire Alarm – relay for interface with fire alarm panel  – wires to main board
  • 900-2Q: 2 Relay QEL control Board – to run 2 Von Duprin QEL devices
  • 900-2RS: 2 Relay EL control Board – to run up to 2 Von Duprin EL devices
  • 900-4R: 4 Relay Output Board – four relay outputs to operate 4 electric locking devices, not QEL or EL
  • 900-4RL: 4 Relay Logic Board – for man trap or security interlock systems
  • 900-8F: Fused 8 Zone Distribution Board – 8 outputs, fused for circuit protection
  • 900-8P: PTC 8 Zone Distribution Board – 8 outputs, circuit breaker protected

PS914 can accommodate 2 of the above option boards, plus fire alarm interface (on one of the boards) and battery back up.

Capable of powering:

  • Up to 4 Electric Latch retraction (EL) exit devices with 900-4RL board
  • Up to 2 EL devices with 900-2RS board
  • Up to 4 Quiet Electric Latch retraction (QEL) exit devices
  • Up to 4 Chexit (CX) delayed egress exit devices off the main board (use 900-8FA combination board if Fire Alarm relay is required)
  • Electric locks or strikes

 

Ordering Tips:

PS-914 is a 4 Amp power supply that is double the capacity of the old PS873, however, from my conversation with IR tech support, their feeling is that it is prudent to power no more than 4 EL devices per PS-914.  Theoretically the power supply could support as many as 8 EL devices however this presents the challenge of timing the relays so that no two can change states at the same time.  If two EL devices are powered up simultaneously the PS-914 could be damaged.

None of the PS900 series power supplies are a drop-in replacement for their predecessors, and the old and new option boards are not cross-compatible with the old and new power supplies.  Therefore, replacing old power supplies with new can present a rewiring challenge.

Ordering back-up batteries can be a little tricky, since they have very similar part numbers for the batteries, the charging circuit board, and a set that includes the board and the batteries.

  • 900-BAT – Pair of batteries only
  • 900-BB – Battery back up board only
  • 900-BBK – Power battery back up kit, board and batteries

 

 

Glass Door Electric Locking Solutions

Installing an electric locking system on an existing, currently unsecured all-glass or Herculite door can be a challenge for the security professional, but there are solutions.  Here are a few:

Electromagnetic Locks

Securitron Glass Door Solution

The Securitron solution to the glass door locking problem is… glue.   When I sell this solution, I usually use:

  • M62G (1200 lb. holding force electromagnetic lock with conduit fitting)
  • AKG (adhesive kit for glass doors)
  • GDB (glass door bracket for armature)

For all glass doors with all glass headers, I also use the HEB-G header extension bracket.  This can also be glued in place using the Securitron AKG.  Since the AKG includes enough glue to do 10 glass-door mag installs, there is more than enough to do one all-glass door and one all-glass header.

Everybody Else’s Mag-Lock-for-Glass-Door Solution

As far as I know, no one besides Securitron really deals with the situation of an all glass header.  For all-glass doors, all the other companies that make electromagnetic locks use variations of the HDB, or Herculite Door Bracket.  This bracket is a U-channel that slides down over the top of the door.  It’s a clip-on system:

Illustration from Rutherford Controls web site

The Herculite door bracket concept seems to work well except in cases were there is a reduced gap between the top of the door and the header.  In that case the U-channel idea is out because the HDB bracket will keep the door from closing.  Then it’s the Securitron and the glue or something else altogether.

RCI Cushion-Lok

A pricey but classy and easy to install alternative to the electromagnetic solution is the Rutherford Controls Cushion-Lok.  The Cushion-Lok is a specially constructed, fail safe electric strike and passive latch that gently locks the door upon closure.   Shown below is the RCI 3360 which is pre-installed on patch fittings that slide onto the glass of the door and “frame” when the entire doorway – door, lintels and header – is made of glass.

Not shown is another version for use with a wood or metal frame and Herculite door.

It is worthwhile to note that the reason security professionals are faced with installing electric locks on existing all-glass doors is because of a lack of planning on the part of the architect or project manager.  It is much easier for a glass door manufacturer to pre-install a locking system than it is for a security professional to install it after the fact.

The “Passage Set”

Often, when customers say they want a “passage set” they really want a cylindrical lock that actually locks.  This is because they don’t know (and often don’t want to know) cylindrical lock functions.   Therefore, the next question I ask is often, “How do you want this ‘passage set’ to work?”

Of course, “passage set” is the name of a cylindrical lock function.  The function of a passage set is that the latch can always be retracted by turning either handle.  It always latches but is never locked.   So when customers order a passage set with an electric strike, I am doubly suspicious.  Do they really want a passage set with that electric strike?

Passage sets are used in non-locking applications like corridors, closets and some offices, and in non-locking fire rated doors to meet the positive latching requirement for fire rated openings.

Therefore, if you want to sound intelligent as you order your cylindrical locksets, don’t call them passage sets unless they are.  Thank you.

 


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