Specifications

Page 14–8
FOCUS System Manual
quickly perform the acceptance test without inter-
fering with a live network. Whether you are
installing the modules in test chassis or chassis
that are on line in a network, use the installation
procedure described here.
The PRI/PRS module occupies two physical
module slots in the FOCUS chassis. This accom-
modates both the main board and the module’s
auxiliary board. The module requires only one
time slot on the T1/E1 line. Before installing the
module and its interface, make sure that:
• The FOCUS chassis is set up, energized,
and operational, with all necessary
common equipment (see Chapter 3)
• The FOCUS Configuration Software (FCS)
has been installed on your computer (see
Chapter 3)
• Acceptance tests for the FOCUS chassis
and all previously installed equipment have
been done to rule out invalid test results for
this module
• FCS is up and running (see the FCS online
help facility: FOCUS Configuration
Software > Starting FCS)
14.3.1 Hardware Installation and
Connections
To install the Protective Relay Interface Module
and rear interface, complete the following steps.
1. Bring the FOCUS chassis “on line”.
Click on the “Online” speed button
.
This uploads to the FCS the current status,
settings, operating statistics, etc., for the
FOCUS chassis — and the PRI module.
2. Unlock the FOCUS chassis.
If the chassis is locked, execute the “Unlock
Configuration” command on the FCS Setup
menu or click on the “Unlock FOCUS
Chassis” speed button .
This puts the chassis into a configurable state,
allowing you to install the PRI module and
interface.
3. Insert the PRI Module into the FOCUS
chassis.
Locate two adjacent open slots on the FOCUS
chassis (to accommodate both the main and
auxiliary boards). Carefully insert the PRI
Module into the top and bottom grooves of the
slot on the left. Slide it all the way in until it is
well seated in the slot. Lock it into place using
the black inject/eject lever on the front of the
module.
When you first insert the module, the red/
green status LED is red. If the module is func-
tional, the status LED turns green within 20
seconds. If the module is non-functional, the
status LED stays red, even after 20 seconds
have elapsed.
4. Connect the proper relay wiring to the
module’s rear interface.
The PRI Module interfaces are shown in
Figures 14-7 (prior to June 2002), 14-8
(enhanced surge protection) & 14-9 (compres-
sion type). To connect a wire on the interface,
simply loosen the screw, insert the wire
beneath it, and tighten the screw. You may
use up to 14 AWG stranded wire or ring lugs.
Using the wiring assignments shown here,
carefully connect the wiring for your applica-
tion. Connect the input, or transmit, wiring to
NOTE
Special care should be taken while inserting
the ground screw. Minimal pressure on the
Ground Stud should be applied as to not
dislodge it from it’s position.