Surge Arrestors; Power Panel; User Alarms, Control Outputs, And Door Alarm - Motorola DIMETRA MTS 2 Installation, Configuration And Basic Service Manual

MTS 2 and MTS 4 Installation, Configuration and Basic Service Manual

Surge Arrestors

Please refer to
Units (FRUs)"

Power Panel

Motorola recommends that all sites where an MTS will be installed use a standardized power panel
including circuit breaker layout. Vacant space should be left to allow for future requirements.

User Alarms, Control Outputs, and Door Alarm

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The MTS in all configurations has the following alarm inputs and control outputs:
•
•
•
.
See Figure 3-7
6802800U74-N September 2009
"Surge Arrestors and Suppliers"
for more information.
Lightning arrestors should be installed to transport lightning strikes away from the equipment.
Install a lightning rod on a tower leg other than the leg to which you mount the antenna.
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15 x 12 V opto-isolated alarm inputs - available on the junction panel
◦ Alarm inputs and Alarm ground are floating
2 x Form A relay outputs with Common and Normally Open contacts -
available on the junction panel
DOOR alarm - connected to the Site Controller
All 15 alarm inputs and Door alarm are using the same Alarm Ground. All these alarms
and controls are connected directly to the Site Controller (SC).
The Expansion Cabinet only offers the Door alarm feature.
For detailed information refer to
Installation" and "User Alarms/Controls, X.21, RGPS, and GPS Cabling"
Chapter 5, "Interconnection and Internal
for more detailed description of User Alarms input structure.
in Appendix A, "Field Replaceable
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"External Alarm Cabling"
Cabling".
■ ■ ■ ■
■
■
in Chapter 4, "Hardware
in
Surge Arrestors
3-21