SmartSensor HD
15
• 25 A per conductor
Both communication and power conductors can be bundled together in the same cable as long as the above-mentioned
conditions are met.
2.4 Lightning Surge Protection. e RVSD shall be installed using lightning surge protection on all communication and
power lines. e surge protection devices shall meet or exceed the EN 61000-4-5 Class 4 specications. e lightning
surge protection unit shall be the Wavetronix Click 200 or equivalent. e lightning surge protection unit supplied shall be
physically compatible with the cable provided.
2.5 Power Supply. e RVSD shall be installed using the Click 201, Click 202 or an equivalent AC to DC power con-
verter that meets the following specications:
e power converter shall be power rated at 15 W or greater at 77°F (25°C) and 10 W or greater at 165.2°F (74°C).
e power converter shall operate in the temperature range of to -29.2°F to 165.2°F (-34°C to 74°C).
e power converter shall operate in the humidity range of 5% to 95% at 77°F (25°C) non-condensing.
e power converter shall accept an input voltage of 85 to 264 VAC or 120 to 370 VDC.
e power converter shall operate at an input frequency of 47 Hz to 63 Hz.
e power converter shall produce an output voltage of 24 VDC ±4%.
e power converter shall have a hold-up time of greater than 20 ms at 120 VAC.
e power converter shall withstand a voltage across its input and output of 2 kV. e power converter shall withstand a
voltage across its input and ground of 1.5 kV.
e power converter shall comform to safety standards UL 60950 and EN 60950.
e power converter shall conform to EMC standards EN 55022 Class B and EN 61000-3-2, 3.
In brown-out conditions (i.e. < 85 VAC input), the output voltage of the power converter shall be less than 1 VDC.
2.6 Input File Cards. If input le cards are used in the detection system, then the Click 112, Click 114 or an equivalent
that meets the following specications shall be used.
e input le cards shall be compatible with 170, 2070, NEMA TS 1, and NEMA TS 2 style input racks.
e input le card shall translate data packets from the RVSD into contact closure outputs.
e input le card shall support dual loop (speed trap) emulation, as well as the following modes of operation:
• Pulse (a single 125 ms output pulse for each vehicle)
• Presence (an output pulse corresponding to the duration of each vehicle in the detection zone)
• Actuation (true presence output in real time)
• Single loop speed (duration of the pulse is inversely proportional to the speed of the vehicle)
e input le card shall receive data packets over an RS-485 bus at any of the following baud rates: 9600, 19200, 38400
and 57600 bps.
e input le card shall autobaud and auto-detect an RVSD over wired and wireless communication channels that have a
maximum latency of 500 ms.
e input le card shall comply with the NEMA TS 2-1998 Trac Controller Assemblies with NTCIP Requirements
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