Installation Instructions

Cable Installation
© 2001 Triton Network Systems, Inc. All Rights Reserved. 3-9
3.3.4 Connecting GPI Cables
When GPI cables are utilized there will be one GPI cable routed from each IFU mounting
location to the surge suppressor. Only one GPI cable is necessary to connect the site equipment
to the surge suppressor.
Figure 3-7 shows typical wiring for a GPI cable used in an alarm application. When referring to
this figure, note the following:
• All alarm relays are shown in non-alarmed condition with normally open contacts.
• Add heat shrink to resistor leads.
• Resistors are rated at ¼ Watt, five percent.
• Cable assemblies are shielded as shown in Figure 3-7.
Figure 3-7: Typical GPI Alarm Wiring Diagram
NOTE: The GPI cable allows dry contact alarm connections to be routed to the IFU and
monitored by the network operations center (NOC).
IFU Alpha
31
WH/BK
33
WH/BN
34
WH/RD
36
Suppressor
GND
Shield
11
2
2
3
44
WH/OR
IFU Beta
IN 1 -
IN 1 +
IN2 +
IN2 -
3
Suppressor Panel
(Optional)
Building
Structure
Ground
Equipment Area
31 WH/BK
33
WH/BN
34
WH/RD
36
Suppressor
GND
Shield
1
1
2
2
3
44
WH/OR
IN1 -
IN 1 +
IN 2 +
IN 2 -
3
Alarm #1
Alarm #1
Alarm #1
Alarm #1
- 48 VDC
48 RET