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                                         Using the N8600 Proximity Detector

 

 

Wiring options:

 The N8600 has two pairs of solder pads for power connection. One pair is on the INPUT (left side) of the circuit and the other pair is on the OUTPUT (right side). The +DC pads are at the top of the circuit on both sides and are connected in common together. This is essentially a “pass-through” connection.

The –DC pad on the INPUT side completes power connection for the detector and are to be wired to the 9-18 volt DC power source.

 The –DC pad on the OUTPUT side is “switched” or closed when proximity detection occurs, providing a –DC connection for devices to be controlled..

 The “pass-through” +DC design allows the OUTPUT side of the circuit to be used in several different ways to accommodate devices being controlled by the detector depending on their physical location with respect to the detector. Examples are shown below:

 

Figures 1 & 2 show two methods of wiring the proximity detector where simple DC power (+ & – DC) will operate the controlled device. Examples would be to turn on LEDs or start an effect that just requires power being applied to initiate the effect. See Compatibility for more information.

 Figure 1 shows an easy way to power everything in an “accessory power bus” configuration where the controlled device may be located near the detector. In this situation, the DC+ output of the detector does not need to be wired because the device is connected to the bus.

 Figure 2 shows a “stand alone” type configuration. For either application the distance between the detector and device to be controlled should be limited to a maximum of 8 feet. Power source wires can be longer.

Figures 3 & 4 below show similar wiring methods but in this case the device to be controlled requires its input control to be grounded (DC–) to initiate startup. This would be typical for many of Ngineering’s Lighting and Sound special effects.

For any of the above configurations, if the proximity detector is to control multiple devices at the same time, it can sink a maximum of 200ma of current. This could be 3 or 4 Little Sound effects, 2 or 3 Little Bigger Sounds, or multiple (5 or 6) Lighting effects.

 

Soldering wires to the Detector:

Important note: A low-wattage iron with a pointed tip should be used for connection of wires. Too much heat or solder can easily damage the wires or module and void the warranty.

We recommend pre-tinning the solder pads and pre-tinning the wires to be connected. This will minimize heat transfer.

 

Mounting:

 Slots are provided in the top of the mounting bracket for screws to affix the assembly.  Position the detector with both ultrasonic sensors facing forward and at least 3 feet above the floor surface to minimize dust accumulation (higher is better). If the display is portable, a small piece of tape can be placed over the sensor faces to keep them clean during transport.

 

Powering up the detector:

 Due to component density and circuit board size, this circuit DOES NOT have protection against incorrect voltage polarity. Ensure + & – DC voltages will be applied to the proper solder pads or DAMAGE will occur.

 

Setting detection distance:

Set the range mode switch to the distance range desired for your application (3 foot setting is the most common). Power up the detector and place an object such as a chair back (or a person) at the maximum distance you want the detector  to activate. An example would be 2 feet. Slowly turn the blue adjustment knob CCW until the LED just turns off. If the LED was off at power up, turn the knob CW until the LED just lights. The detector is now set to that distance for its maximum for detection.

 

 

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