FTS 371 USER MANUAL
Flash Technology, LLC
Revision 4 – 9/7/2021
15
DRY CONTACT MONITORI NG AND PHOTODIODE CONNECTIONS
Find the dry contact monitoring connection on J4. The FTS 371 controller provides one alarm point available for
external monitoring.
The photodiode (PHD 516) will connect to the far right of J5. If necessary, prepare the photodiode cable by
stripping jacket and removing foil shield from black, clear and drain wires. Connect the wires to matching labels on
the PCB for proper operation (Clear to WHT, Black to BLK and drain wire to SHLD).
Dry Contact Monitoring and Photodiode Connections
INSTALLATION CHECKLI STS
Table 2.2 – System Installation Checklist
All equipment has been pre-inspected for damage.
All received equipment has been verified against the packing list to ensure completeness.
Site installation drawings have been consulted for placement, mounting, and wiring details.
A power disconnect switch or a circuit breaker has been provided.
A lightning protect system is in place.
Junction boxes have been ensured to drain condensation properly.
Controller has been mounted and positioned to allow adequate clearance to open the cover.
Controller has been mounted upright.
All screws within the internal controller hardware are tight.
No holes have been punched or drilled on the top of the controller enclosure.
The photodiode has been located where it has an unobstructed view of the polar sky (north).
Photodiode is located where it will not view direct or reflected artificial light.
Photodiode is supported directly by electrical conduit or mounted on the optional Antenna Mounting
Bracket (Kit PN 1905355).
Photodiode is not mounted underneath the controller where it could be shadowed.
Photodiode installation is water tight.
AM Towers Only:
If the AM tower is “hot,” do NOT connect the ground wires to the beacon power
connector or the controller beacon power connector.
