Protect yourself from FCC fines with this affordable solution from Transtronics. Now is the time to add lighting alarm contacts to your red lit tower.
The ITLM" pays for itself -- no need to buy a new lighting control system -- the ITLM Sensor retrofits into the existing tower's lighting control panel. A simple press-of-the-button calibrates this module to the lamp load on your tower -- saving you time and frustration. The ITLM protects you from FCC light-outage-fines the competition's units fail to detect! It detects 11 different alarm conditions and is the most comprehensive device on the market.
The ITLM is a tower lighting alarm sensor system that monitors 'Red lighted' towers (towers using incandescent bulbs in red lens housings). It detects 11 different alarm states including predictive failure alarms. The predictive alarms allow you to schedule tower maintenance before the failure actually occurs.
|Day/night||for FCC/FAA logging|
|Minor||failures requiring maintenance|
|Major||failures requiring FAA notification and maintenance.|
The system consists of a 'Sensor' and a receiver. The ITLM Sensor retrofits into the existing tower's lighting control panel.. The receiver normally mounts in the tower building and connects to the 'Sensor' via a custom modular shielded cable. The ITLM"; calibrates itself to the beacon and Side lights
Auto calibration Senses shorted bulbs Checks line voltage Checks day/night switch obstruction bulb sets of your tower with a simple push of a button.
See the C266 clamp meter for measuring lamp circuits.
|Power requirement||10 to 14Vdc 300 mA max.|
|Size (receiver circuit board)||3.0" x 5.4" x 1.1" deep (including feet)|
|Tower calibration||Push button|
|Indicator LED's||(5) Trouble, Beacon, Flash, Side, Day/night|
|Jumpers||Beacon, side and flash|
Relay (ITLM-RL) 5A @ 120Vac or 30Vdc Resistive
Open collector (ITLM-OC) 30mA
|Size (sensor circuit board)||2.1" x 3.6" x 1.75" deep (including feet)|
|Beacon thread-through toroid input||30A maximum. Handles up to two pairs of 620-735W bulbs. Wired with 'hot' beacon conductor.|
|Side thread-through toroid input||15 A maximum. Handles up to 10 100 -116W side-lamps (obstruction lamps). Wired with 'hot' side conductor.|
|Neutral||Connects to white power wire supplied to lighting control panel.|
|Day/night||Connects to switched side of day /night switch.|
|L1||Connects to black power wire supplied to lighting control panel. (First side of day/night switch.)|
|Alarm enable||Power is applied between AC 'com' and Obstruction 'hot'. If not on, all alarms are disabled except the 20 hour off alarm and low DC alarm.|
|Beacon||Beacon is enabled AND power is on AND one or more lights in beacon loop have failed open or hi-current.|
|Flash||Flash fail is enabled AND beacon remains on 10 Sec AND power is on.|
|Side||Power is ON AND side-lights have been enabled AND one or more side-lights have failed open or hi current.|
|Trouble report LED|
|Number of flashes||Meaning|
|1||Unit needs calibration|
|2||No day/night for over 20 hours (check 'photo switch'). Appears with beacon LED lit.|
|3||High current (shorted bulb) - Look for beacon or side light LED to find out which circuit.|
|4||DC is below 10 Volts. Check battery.|
|5||No AC - Check tower lighting circuit breaker|
|Enable Jumpers Allows for enabling and disabling various alarms.|
|BCN||enables beacon alarms||disables beacon alarms|
|FSH||enables flash alarm||disables flash alarm|
|Side||enables obstruction alarms||disables obstruction alarms|
Terminal block connections Relay version
|Lights on NC||Lights on COM||Lights on NO||
Terminal block connections Open collector version
Lost you manual? - get it here in pdf format
First, familiarize yourself with Fig 1A. It shows a typical circuit where the Day/night switch controls L1 (line or hot-side) going to the side (obstruction) lights and the flasher switch. The flasher switch provides the blinking action of the beacon circuit. Neutral provides the return path for the day/night, flasher and lamps.
Now, examine the tower site and identify the lighting control panel; it is usually at the bottom of the tower. First, shut off the power to the tower lights and verify that the power is off. Opening the panel will reveal a feed line from a circuit breaker panel. Identify L1, neutral and ground.
There will also be a conduit or a SO style cable coming down the tower to enter the lighting control panel. This conduit will have three wires for a beacon and side light tower (occasionally there may be a fourth ground wire). One of these three wires is the neutral. The other two wires will be the line-side of the beacon and side-lights.
Now, determine if there is enough room to mount the Sensor circuit board in the lighting control panel. The beacon and side light wires will thread through the appropriate toroid. Make sure there is adequate clearance for wires and access to terminal block screws. To physically mount the Sensor Circuit board in the lighting control panel, first clean the mounting area with the alcohol wipe provided, then remove the backing from the "sticky feet" and press into place.
If there is not enough room, mount the sensor in a weather-proof box.
Note: All wires should be of the proper gauge to comply with the REA electric codes.
As shown in Fig 1B, connect L1 from the circuit breaker panel, with a black wire of the same gauge, to the terminal on the sensor board marked L1.
Next, connect neutral from the circuit breaker panel, with a white wire of the same gauge, to the terminal on the sensor board marked N.
Next, identify the side light wire that comes from the tower and temporarily disconnect it. Thread it through the toroid marked 'Side'. While reconnecting the side wire, add a black wire of the same size, and connect it to the terminal on the 'sensor' board marked 'D/N'.
Now, momentarily disconnect the beacon wire and thread it through the toroid marked 'beacon' and reconnect.
If possible, the modular cable should exit the lighting control panel from the bottom of the box to avoid any possible moisture entry. Plug the modular cable end with the core grip into the Sensor board. Finally, run the other end of the modular cable to the alarm panel site. At this point your circuit should look like figure 1B.
|ITLM-RL||Form C relay output|
|ITLM-OC||Transistor open collector output option|
|ITLM-CABLE||extra length (>20')|