Data Sheet for Product

s Industry, Inc.
Building Technologies Division
Specifications ─ (continued)
Each PAD-3 NAC extender unit can be configured in
a way that each input circuit can be programmed as
steady output, ANS
I temporal output, or
synchronized strobe output. Also, programming
can be set so one (1) input will silence the audible
signal on Siemens Models AS-series, NS-series, or
ZH-series horn and horn-strobes while the strobes
remain active.
Model PAD-3 is capable of operating other
components within a Siemens fire alarm system,
such as door holders, via 3 Amps @ 24VDC max of
power-limited auxiliary output. When using this
output, the total power available from the NAC
extender unit cannot exceed 6 Amps.
A ‘Form C’ dry contact is provided for monitoring
Trouble conditions through each input. In addition,
a ‘Form C’ Trouble contact is provided for monitoring
Model PAD-3 connected through the input of a
Siemens FACP. The user, therefore, has the option
of connecting Model PAD-3 to a notification circuit
of a Siemens FACP, or monitoring Model PAD-3 with
a Model TR
I-series monitoring module on a Siemens
intelligent fire system.
Model PAD-3 supervises a variety of functions
including:
 Low AC power
 Battery-voltage level
 Earth ground-fault conditions
 Auxiliary output power-limited conditions
 End-of-Line (EOL) supervision Trouble condition, or
power-limited condition at an output
Model PAD-3 provides 6A at 24 VDC power, directed
to two (2) ‘Class A’ or four (4) ‘Class B’ power-limited
NACs. Each NAC supports up to 3 Amps per circuit.
Either one (1) or two (2) inputs can control four (4)
outputs, which are compatible with all Siemens  Fire
Safety 24VDC alarm signaling devices.
The Model PAD-3 battery charger can charge up to
15AH batteries. Each unit is packaged in its own
sheet-metal enclosure with sufficient space to house
up to 7AH battery sets. PAD-3 enclosures are
available in either black or red.
When battery sets greater than 7AH are required, the
battery set must be housed in a System 3 enclosure
or a separate
UL / ULC Listed battery enclosure.
System 3 enclosures may also be used to house
multiple Model PAD-3 units in a single enclosure, via
the Model S3AP Adapter Plate. Two (2) units are
capable of sharing the same battery set when
mounted in the same enclosure.
Each Model PAD-3 unit complies with seismic
certification, pursuant to the following:
 ASCE Standard 7, 2005 Edition
 International Building Code, 2006 Edition
 California Building Code, 2007 Edition

ICC-ES AC 156, effective 2007
 OSHPD preapproved, under: OSP-0057-10
− OSHPD CAN 2-1708A.5, Rev. 3
Configuration Options
Option
Input[s]
Output Controls Circuit Types
1
Input 1
All outputs ‘Class B’ circuits
Input 1
All outputs ‘Class B’ circuits
2
Input 2*
Silences horns on Output
1 —
Input 1
Outputs 1 and 2 ‘Class B’ circuits
3
Input 2
Outputs 3 and 4 ‘Class B’ circuits
Input 1
Output 1 ‘Class B’ circuits
4
Input 2
Outputs 2, 3 and 4 ‘Class B’ circuits
5
Input 1
Outputs 1 through 4
‘Class A’
circuit pairs
Input 1
Outputs 1 through 4
6
Input 2*
Silences horns on Output
1
‘Class A’
circuit pairs
Input 1
Outputs 1 and 2
‘Class A’
circuit pairs
7
Input 2
Outputs 3 and 4
‘Class A’
circuit pairs
* denotes when used with Siemens Model AS, NS or ZH--series
horn / strobe NAC devices
Indicator Lights
AC Power ON:
Green
Battery Trouble:
Yellow
Ground Fault:
Yellow
Auxiliary Trouble:
Yellow
Output 1 Trouble:
Yellow
Output 2 Trouble:
Yellow