Pub. 42004-406A
Model 12594-001 Redundant AZI Switching Module Page: 2 of 7
\\s_eng\gtcproddocs\standard ioms - current release\42004 instr. manuals\42004-406a.doc
04/08
Installation
CAUTION
When installing or replacing this module, be sure power is not applied to
avoid damage to the module circuits.
The Model 12594-001 Redundant AZI Switching Module is designed for mounting in 4-inch Snap Trak
®
.
When inserting the module in SnapTrak
®
, exercise care when pressing on the module edges 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 following is a description of the available terminations:
J1 – is the primary AZI card connection; a cable with a 25-pin “D-Sub” connector is required.
J2 – is the secondary AZI card connection; a cable with a 25-pin “D-Sub” connector is required.
JTB1 – is the 12 V dc power input to the module.
JTB2 – is a feed-through 12 V dc power output to other modules.
JTB3 – is the secondary RS-485 data connection.
JTB4 – is for the six switched, audio outputs.
JTB5 – is the primary RS-485 data connection.
JTB6 – are the control inputs to the module to activate the relays to switch between primary and
secondary AZI cards when a fault occurs. Activation at either input requires dc (-) control.
JTB7 – is the Form “C” dry contact output, which can be used to activate other devices or for remote
status indication. The maximum switching capacity for the contact set is 30 V dc @ 1 amp.
JTB8 – is an auxiliary audio output connection from the AMP-6 output of the primary AZI card that can
be used to supply audio signals to other devices, if needed.
JTB9 – is an auxiliary audio output connection from the AMP-6 output of the secondary AZI card that
can be used to supply audio signals to other devices, if needed.
