Wiring Guide - Radar Speed Signs

Wiring Guide - Radar Speed Signs


Overview
Radar Speed Signs are designed to monitor and display vehicle speeds, enhancing traffic safety. These signs require a stable 12V power system, which can be provided through various solar kits tailored to the geographic sunlight availability or standard AC power kits. Selecting the appropriate solar kit is critical and depends on your region’s sunlight levels. Your regional sales manager can assist in choosing the right kit for your area.

Solar Kit Options

Radar Speed Signs can be equipped with different solar or AC power kits based on regional sunlight exposure:

  • Solar South Kit: 60 Watt / 35Ah (M75-SOLAR-000S)

  • Solar Central Kit: 60 Watt / 70Ah (M75-SLR70-000C)

  • Enhanced Solar Central Kit: 100 Watt / 70Ah (M75-SOLAR-000C)

  • Solar North Kit: 100 Watt / 140Ah (M75-SLR14-000N)

  • Enhanced Solar North Kit: 150 Watt / 140Ah (M75-SOLAR-000N)

AC Power Kits

  • Standard AC Power Kit: 60 Watt (M75-ACPWR-U060)

  • Enhanced AC Power Kit: 200 Watt (M75-ACPWR-U200)

Wiring Instructions

Follow these steps to ensure a safe and efficient installation, adhering to the best practices prescribed by the NEC. Only qualified technicians should perform these installations.

Power Supply Connection

The iQ Series Radar Speed Sign may come with a TraffiCalm power supply that can be solar or AC line powered, typically ending in a DC Barrel connector (2.5mm x 5mm). If the sign is not provided with a TraffiCalm power supply, it will likely have 18 to 14 AWG insulated wires. Use at least 18 AWG wire for connections up to 6 feet; for longer distances, adjust the wire gauge accordingly to handle a 3 Amp load with less than ¼ volt drop over the length of the wire.

DC Barrell connector 2.5mm




Connecting the Sign to Power

  1. Safety First: Ensure all power sources (battery, solar, or AC) are disconnected before starting.
  2. Conduit Installation: Use a liquid-tight conduit to run from the power supply to the sign's field wiring plate, entering through one of the designated knockouts.
  3. Wiring Route: Through the conduit, run the 12VDC Positive, common, and Earth/chassis ground wires from the power supply to the sign.
  4. Ground Connection: Attach the Earth ground using a ring lug (not provided) to the stud on the field wiring plate.
  5. Refer to Wiring Diagrams: Consult the attached wiring diagrams for proper routing of wires to the respective components.
  6. Power Reconnection: Reconnect the power source—battery, line power, or solar panel.
  7. Testing: Once reconnected, test the sign to verify successful installation.

DC Connection

  1. DC Connection: If using a barrel connector, cut the connector off, separate the wires, and strip ½ inch of insulation from each. Identify the positive wire by the white stripe.
  2. Terminal Connections:
    • Connect the positive wire to the terminal marked “+12VDC.”
    • Connect the common wire to the terminal marked “DC COM.”
  3. Reassemble: Secure the field wiring plate back onto the sign.

Wiring Diagrams

South

  1. Solar South Kit (M75-SOLAR-000S)

Central

Solar Central Kit (M75-SLR70-000C)
Enhanced Solar Central Kit (M75-SOLAR-000C)

North

Solar North Kit (M75-SLR14-000N)
Enhanced Solar North Kit (M75-SOLAR-000N)

A/C

Standard AC Power Kit: 60 Watt (M75-ACPWR-U060)
Enhanced AC Power Kit: 200 Watt (M75-ACPWR-U200)

Conclusion

For further detailed instructions and diagrams, refer to the complete wiring guide available from the manufacturer or your regional sales manager. This guide ensures that your Radar Speed Sign is installed with precision for optimal performance and compliance with safety standards.

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