GAI-Tronics 12593-101 Redundant PPI Switching Module - Manual (Page 2)

Pub. 42004-474A
Model 12593-101 Redundant PPI Switching Module Page 2 of 5
f:\standard ioms - current release\42004 instr. manuals\42004-474a.doc
04/13
Hardware Configuration
The Model 12593-101 Redundant PPI Switching Module is comprised of two printed circuit board
assemblies (PCBAs). The lower base board contains the switching relays and measures 4 L
 4 W inches
(102  102 mm). The relay switching PCBA is equipped with six small DPDT relays, two LEDs, three
RJ45 jacks and three modular (plug-in type) terminal blocks.
The upper CPU PCBA employs a micro-controller and has two address switches (S1 and S2). The small
terminal block located on the opposite side is for external power when used in other applications.
Installation
CAUTION When installing or replacing this module, be sure power is not applied to
avoid damage to the module circuits.
The Model 12593-101 Redundant PPI Switching Module is designed for mounting in 4-inch Snap Trak  .
When inserting the module in SnapTrak  , exercise care when pressing the module edges into the
SnapTrak  to avoid damage to the module’s printed circuit board and components.
Once installed in the SnapTrak  , be sure the module edges are secured in the channels so that the module
does not dislodge during transport or operation if subjected to vibration. Also, if this module is used with
other modules in the SnapTrak

, be sure to leave spacing between modules to facilitate wiring at any
edge-mounted terminal blocks.
Terminations
The Model 12593-101 Redundant PPI Switching Module is equipped with three RJ45 jacks and three
modular (plug-in type) terminal blocks, which simplify external connections during installation, and
provide quick disconnect if replacement is ever required.
The following is a breakdown of each connector and terminal block and its function(s):
J1 – is the primary PPI card connection; a standard straight through Cat5E cable is required.
J2 – is the secondary PPI card connection; a standard straight through Cat5E cable is required.
J3 – is the output connection to the Page/Party ® TVP connection module; a standard straight through
Cat5E cable is required.
TB1 – is the 12 V dc power input to the module.
TB2 – is the control input to the module to activate the relays to switch between primary and secondary
PPI cards.
TB3 – is the form “C” dry contact output, which can be used to activate additional switching modules, or
for remote status indication. The maximum switching capacity for the contact is 30 V dc @ 1 amp.