PDD-8ACI

Distribution Module for Access Control

Controls and Distributes Power with 8 Control Relays with an EOL Fire trigger interface SUBASSEMBLY

Power Interface for Access Control, CCTV, Fire, HVAC, Elevator, and general low voltage system control

Note: HVAC and Elevator Control has not been evaluated by UL

The PDD-8ACI is a versatile, compact way to distribute and control power for Access Control Systems with Fire Alarm Interface.  The PDD-8ACI is an 8 position power distribution board with individual Relays with input (IN) control for each output (OUT).  An EOL resistor trigger input (TRIG), will force all output relays to de-energize that are selected (FT).  In a typical installation, the TRIG would be connected to a Fire Alarm panel via a set of contacts.  When the Fire Alarm trips, all enabled relays would be forced to be de-energized to unlock electric doors, shut down air systems, and or return elevators to ground floor.

Input/Output Terminals, Jumpers and LED Details and Specifications

Control Power (- CONTR +) Two position un-pluggable terminal block is used to power the coils of the relays.  The control voltage must be between 11 and 28Vdc.  Each relay energized will draw 20ma of current.  By default, Control Power and Main Power are connected together with jumpers J1 & J2 so no connection would be made here unless you were using Dual/separate power as described below.  Note Dual/separate power source configuration has not been evaluated by UL and cannot be configured for UL Listed products.

Main Power (- POWER +) Two position un-pluggable terminal block provides the power to the outputs to be distributed and power to Control through J1 & J2.  In a normal application the Power must be between 11 and 28 Vdc and would be connected here.  With Dual Power below, high voltage may be applied.

Dual/Separate Power J1 & J2 Jumpers  Note Dual/separate power source configuration has not been evaluated by UL and cannot be configured for UL Listed products.  J1 Connects (-) Power to (-) Control, J2 Connects (+) Power to (+) Control.  By default J1 & J2 are connected together.  When J1 & J2 are cut, you must supply 11 to 28Vdc to Control power, then you may connect any voltage to 120Vac to the Main Power Terminals.  See Dual/Separate Power application figure below.
Inputs (1-8 IN C) Eight, two position un-pluggable terminal blocks.  When IN & C are shorted together, the like number output relay will energize.  Each relay can also be energized by an open collector that is common to the control power, sinking 20ma for each input.  Each of the C’s (common) are connected to control negative power.

Input LED’s (1-8) Whenever an input is active (relay energized) the associated input red LED will illuminate.

FDT/FT (1-8) Jumpers - These are three pin headers adjacent to each fuse with a shunt with handle that shorts the center pin to FTD or FT.

FTD = Fire Trigger Disabled - When selected, the Trigger will not effect that output.

FT = Fire Trigger – When selected Triggering will force that Input Relay to De-Energize.

Dry/Wet Option (1-8 Fuse Models)   Through a Fuse, the (+ Power) is connected to the swing arm of each Relay to distribute power to its output.  Removing the Fuse, removes the power from the relay.  The (+) now becomes the Common Swing Arm and the “O” is the N/O or N/C contact as selected with jumper.
Outputs (1-8 OUTPUT C, +, O) Eight, Three position un-pluggable terminal blocks.  “C” is Power Common and is connected to (- power).  “+” is connected to fused (+power) and the relay swing arm.  “O” is the relay switched output as selected with N/O or N/C selector jumper

Output Relay Contacts Selector (1-8 NC/NO) Jumpers These 3 pin headers with shunt selectors are located just above each output which selects whether the N/C or N/O contacts are connected to the “O” switched output terminal. With N/C selected, output would be normally ON, or connected to swing arm.  With N/O selected, output would turn ON, or close when input is activated.

Fire Alarm Interface Trigger (2.2K EOL TRIG) Two position un-pluggable terminal block.  This input must see the 2.2K ohm EOL (End Of Line) resistor to be in the normal condition.  The EOL is to be placed in a Listed fire alarm panel.  See Fig 1 illustrating that shorting or opening the EOL will cause the PDD-8ACI to trigger.

TRIG LED (TRIG) Green LED normally ON.  Whenever the Trigger is active the LED will be OFF.

Features

  • 8 Heavy duty Relays with individual Inputs and Status LED’s
  • Each Relay Input can be Activated from Low Current Open Collector, Normally Closed or Normally Open Switch
  • EOL End of Line Resistor  Fire Interface Master Trigger de-energizes all Output Relays that are Enabled
  • Universal 11 – 28Vdc power input
  • Available with Fuses or PTC Circuit Breakers
  • Note: Only the 500mA fuse version of the board has been evaluated by UL
  • Note: The outputs of the PDD-8ACI are power limited when connected to a power-Limited power supply
  • Each Output may be Individually Configured for:
  • Fire Trigger (FT) Enabled or (FTD) Disabled
  • FUSE model can provide optional Dry Contacts
  • N/O or N/C Option Configures the Relay Switched Output
  • Each Output 1-8 has a protected, continuous Output and a Relay controlled Output
  • TRG LED Green Indicates Trigger Status
  • Control Power and Main Lock Power may be Isolated
  • (Separate Power Supplies) at Users Option
  • Note: Dual/separate power source configuration has not been evaluated by UL and cannot be configured for UL Listed products
  • All Terminal Blocks are Pluggable by Channel & Function

Specifications

  • Control (-contr+) .................................... 11–28Vdc @ 160mA 
  • Normally no connection is made here.  Note: You must add this current to your total device load calculations to be sure your load will be within the rating of the power supply as configured
  • Main Power (-power+) **SEE NOTE**...........................   0 to 120Vac
  • Note:  Must cut J1 & J2 when not using 11-28Vdc power See Dual/Separate power source configuration Note Dual/separate power source configuration has not been evaluated by UL and cannot be configured for UL Listed products.
  • Total Amps would be equal to the total current of the outputs load plus the module draw of 160ma
  • Fused/Wet Outputs:
  • Max. Output Current (with 5A Fuses .....................  5A (each Output)
  • Dry Outputs:
  • Terminal blocks un-pluggable  5mm spacing 14–22 awg 
  • Fused Outputs  1-8   ....................................   20mm Fast Blow
  • The fused outputs of the PDD-8ACI are power limited when connected to a power-Limited power supply
  • Output Relays 1-8 Dry Contacts are not to exceed  ...........  7A or 100VA
  • Trigger Input .................................................   2.2K EOL
  • Operating Temperature .......................................  0o to +49oC
  • Mounting Holes  ........................................   (4) 3.4” x 4.5”
  • Module Size: ....................................   4.82”w x 3.84h x 1.4”d
  • Weight: .............................................................  8oz
  • Mounting Note: Secure 4, #6-32 female/female hex standoffs 7/16” long onto 4, #6-32 studs provided in distribution option space inside cabinet back.  Place PDD-8ACI on stand offs with input terminals on top.  Secure module with 4, #6-32 x ¼” pan head screws.  No metal hardware should be larger than .28” in Diameter.
  • Note: All interconnected devices must be UL Listed.
  • UL Approvals for PDD-8ACI
  • UL 294 Access Control System Unit

Specifications are subject to change without notice

Ordering Information

  • PDD-8ACI “ACI” module comes with .5A (500ma) fuses by default.  1A, 2A, 3A, 4A, & 5A are available   Note: Only the 500ma fuse version of the board has been evaluated by UL
  • PDD-8ACIC “ACIC” module only has a default 1.23 Amp PTC’s  1.42A, 2A, 3A are available upon request.
  • Not Evaluated by UL
  • Each ACI takes the space of a standard PDM-8 distribution board.  We do not charge extra for mounting when purchased with a cabinet power supply.