GTT Canoga C924 Series, Installation Manual

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Canoga™ Vehicle Detectors
Canoga™ C924X Series Installation Manual
18 – Vehicle Detector Setup & Configuration
5.2 Recommended Setup & Configuration
5.2.1 Initial Hardware Setup
It is recommended that the following steps be followed in setting up a new Traffic Sensing System
Installation.
See to Section 7.4 Diagnostic Codes on page 63 for diagnostic codes displayed on the front panel.
5.2.1.1 Checking Card Connector & Wiring
Check that the card connector is the correct type and is properly wired.
See Sections 3 - Hardware Installation on page 5 and Section 8 - Product Description and Specifications
on page 64 for other specific information.
5.2.1.2 Inserting Vehicle Detector Card
Insert the vehicle detector into the desired card rack slot. The unit may be inserted or removed with
the power switch in the OFF position or in the ON position.
5.2.1.3 Powering ON
If the power switch is OFF, move the power switch to the ON position. The green LED power indicator
should light up.
5.2.1.4 Checking Start-Up Sequencing
The vehicle detector card should go through its startup sequence – all indicators ON for less than one
second and then all green detect LEDs on for a total of about 4 seconds. After this, normal operation
starts.
5.2.1.5 Checking Fault Indicators
All fault indicators should be OFF. If any sensor has a fault - Open, Shorted, or >25% dL – find the
incorrect or defective connection and fix it.
5.2.1.6 Checking that Call Matches Vehicle Presence
Check that the detect/call LED comes ON when a vehicle drives over the sensor. If the detect LED
turns ON, but not when a vehicle is over the sensor, the channel is probably connected to the wrong
sensor. Correct any sensor hookup wiring as may be required.
5.2.1.7 Checking Speed Trap Detect Sequence
If the real-time vehicle logging configuration has speed traps for measuring vehicle speeds and lengths,
check to be certain the detect LEDs light in the correct order.
5.2.1.8 Checking 0 VDC to Protective Earth voltage
Using a voltmeter or oscilloscope, measure the AC and DC voltage from Protective Earth (Earth
Ground) to 0 VDC (vehicle detector VDC common). There must be essentially no voltage between
these terminals. If a voltage exists, eliminate the cause of the problem (generally some type of
cabinet wiring error). When a PC is connected to utilize the C900-CS for completing setup, the PC will
likely create a short between Protective Earth and 0 VDC. If a voltage source exists between
Protective Earth and 0 VDC, the PC may be damaged.