The PDD-8ACI is a very versatile, compact way to distribute and
control power for Access Control, Security, CCTV, Air Handling,
and Elevator Control Systems with Fire Alarm Interface. The
PDD-8ACI is an 8 position power distribution board with
individual 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 insulation,
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 return elevators to ground floor. Any one of
the 8 outputs could be utilized to provide a set of (TRIGGERED)
form “C” status contacts
to daisy chain other PDD-8ACI boards, latch, or provide feedback
to a control system. If the feedback contacts had to be dry,
you would have to use a FUSE model or use a relay module like a
RT-1.
Input/Output
Terminals, Jumpers and LED
Details and Specifications
Control
Power (- CONTR +)
2 position un-pluggable terminal block is used to power the
coils of the relays. The control voltage must be between 10 and
28 volts DC. Each relay energized will draw 20ma of current.
By default, Control Power and Main Power are connected together
with jumpers J1 & J2. To utilize separate power for the
control, J1 & J2 must be cut and suitable power connected to
these terminals.
Main Power
(- POWER
+) 2 position un-pluggable terminal block provides the power to
the outputs to be distributed. This power input is limited to
CONTR. If J1 & J2 are cut and using separate supply for Main
Power, then this power could be up to 32 volts AC or DC. On
fuse model the limit could be as high as 240v ac or dc observing
safety and local electrical codes. Current consumption would be
total of each output circuit.
J1 & J2
are jumpers that connect to the Control Power, (-contr+) and the
main lock power, (-power+) together for easy use of 1 power supply.
If you would like to use separate power supplies to fully isolate
the control power to the output lock power, then cut Jumpers J1 & J2
located just above Control Power input. If reconnecting J1 & J2
ever becomes necessary, then connect + to + and – to – at the main
power and control power input terminal blocks.
Inputs (1-8 IN
C)
Eight, 2 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 are
areconnected
to control negative power.
Input LED’s
(1-8)
Whenever an input is active (relay energized) the associated input
red LED will illuminate.
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 it’s 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 OUT
C, +, O)
Eight, 3 position un-
Output
Relay Contacts Selector (1-8 NC/NO)
This selector located just above each output selects whether the N/C
or N/O contacts are connected to the (O) switch 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)
2 position un-pluggable
terminal block.
This input must see the 2.2K ohm end of line resistor to be in the
normal
condition. A change in resistance of + or – 60% caused
by shorting or opening the EOL will cause the trigger activate,
lighting the Trig LED, and de-energize all the enabled relays. The
EOL should be placed at the end of the line to supervise the wire
run from module to Fire alarm panel.
TRIG LED (TRIG)
Green LED normally ON. Whenever the Trigger is active the LED will
be OFF.
Trigger Feedback
The PDD-8ACI module does not have a dedicated relay contacts to
provide feedback; however any of the 8 outputs can be utilized to
provide a trigger status feedback. This feedback can be used to
make the trigger latch, provided feedback to control panel, or daisy
chain to trigger other PDD-8ACI’s.
Ordering
Information
PDD-8ACI “ACI”
module only with
2 Amp
Fuses
PDD-8ACIC “ACIC” module only with 1.23 Amp
PTC’s
SPS-5ELC81ACI
SPS-5 power supply in a large enclosure with a
PDM-8C distribution board and 1 PDD-8ACI
fused module
Each
ACI takes the space of a standard
PDM-8. We do not charge extra for mounting
when purchased with a
cabinatecabinet
power supply.
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PDD-8ACI Technical Sales / Instructions
Electronic
Security Devices Incorporated 09/20/05 jdb