Reno A&E G - 200 User Manual

Model G - 200

Two Channel Rack Mount Detector

• Two detector channels in a single unit

• Eight front panel DIP switches for each channel

• Loops are sequentially scanned to eliminate crosstalk

provide:

• Eight levels of sensitivity

• Presence or Pulse mode

• Four loop frequencies

• Fail-Safe or Fail-Secure operation

• Channel disable

Ordering Information: Model G-200-XX

R = Relay outputs SS = Solid State outputs

• Loop fail event monitor remembers and indicates

intermittent and current loop failures

• Detector is self tuning and provides complete

environmental tracking

• Dual color (red / green), high intensity LEDs provide

detect and loop fail indications

• Complete built-in detector integrity test

• Space provided on front panel to label each channel

• Audible detect signal (buzzer) facilitates loop and/or

detector troubleshooting

The Model G-200 series is designed to meet or exceed NEMA Standards TS 2-1998 for Type A detectors and is downward compatible to NEMA Standards TS 1-1989. Model G-200 detectors are two channel, DIP switch programmable, card rack type loop detectors with individual channel detect and loop fail indications provided via two dual color, high intensity LEDs.

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Model G - 200 Specications

This is a Performance Specication. It is not intended to be used as Operating Instructions.

General Characteristics:

Loop Frequency: Each channel has four (4) DIP switch selectable loop frequencies (normally in the range

of 20 to 100 kilohertz) that are a function of the actual loop / lead-in network.

Sensitivity: Eight (8) sensitivity levels are available for each channel. The eight settings are selectable using three DIP switches. Each of the eight sensitivity levels are binary encoded from 0 to 7 (lowest to highest sensitivity). The sensitivity level selected determines the percentage of negative inductance change of the loop circuit required for a Call output signal. (See Sensitivity, -∆L/L, & Response Time table.)

Channel Disable: When set to the Disable position, the channel output is continuously in the No Call state regardless of the presence or absence of vehicles over the loop. The loop oscillator is not activated when the channel is in the Disabled (ON) state. Changing this setting will reset the channel.

Presence / Pulse Mode: Each channel can be independently set to operate in one of two modes by means of front panel mounted DIP switches.

Presence Mode: Call hold time is a minimum of four minutes regardless of vehicle size, and is typically one to three hours for an automobile or truck.

Pulse Mode: A pulse of 125 ±10 milliseconds duration is generated for each vehicle entering the loop detection zone. Each vehicle detected is instantly tuned out if it remains in the loop detection zone longer than two seconds. This feature allows detection of vehicles subsequently entering the detection zone. After each vehicle leaves the loop detection zone, the channel resumes full detection sensitivity within one second. Changing the Presence / Pulse Mode switch will reset the channel.

Fail-Safe / Fail-Secure Operation: During a loop failure condition, the state of the channel’s output can be selected as Call in the Fail-Safe mode or No Call in the Fail-Secure mode. Fail-Safe operation during a loop failure is the standard mode of operation for intersection control. Fail-Secure operation during a loop failure is typically used for incident detection systems for freeway management. Fail- Secure selection also selects fast response for very accurate speed measurements. Changing this setting will reset the channel. (See Sensitivity, -∆L/L, & Response Time table.)

100 Millisecond Minimum Output: When the detector is operating in Presence mode, two modes of operation are available for the Call outputs; Normal mode or 100 Millisecond Minimum Output mode. 100 Millisecond Minimum Output mode can be selected via a DIP switch on a PC board mounted two-position DIP switch module. When this feature is OFF, Call outputs will stay on only as long as the detection zone is occupied. When this feature is ON, every Call output will have a minimum duration of 100 milliseconds.

Audible Detect Signal: A front panel mounted push-button is used to enable an audible detect signal that is emitted any time a given channel’s detection zone is occupied.

Detect / Fail Indicator: Each channel has a super bright, high intensity, dual color (red / green) LED that indicates a Call output and/or the status of any current or prior loop fault condition. A continuous ON (green) state indicates a Call output. A continuous ON (red) state indicates that a current open loop failure condition or an inductance change condition of greater than +25% condition exists. A one Hz (red) ash rate indicates that a current shorted loop failure condition or an inductance change condition of greater than -25% condition exists. A ash rate of three 50 millisecond (red) pulses indicates a prior loop failure condition. A ash rate of three 50 millisecond (red) pulses followed by a 750 millisecond (green) pulse indicates a prior loop failure condition and a current Call output (detect state). If the audible detect signal is activated, any detect indication that would normally be displayed as green will be displayed as orange.

Loop Fail (Event) Monitor: If the total inductance of the loop input network goes out of the range specied for the detector, or rapidly changes by more than ±25%, the affected channel will immediately enter the programmed Fail-Safe or Fail-Secure mode of operation. Fail-Safe operation generates a continuous Call output in the Presence or Pulse mode. Fail-secure operation does not generate a Call output during a loop failure. In both modes of operation, the detect / fail LED will illuminate (red) and remain on for as long as the loop fault exists. If the loop self-heals, the channel will resume operation in a normal manner, but the detect / fail LED of the channel will begin to ash at a rate of three ashes per second as a means of indicating a prior loop fail condition. The detect / fail LED will continue its indication of a prior loop failure until the detector channel is reset, the detector channel is reset, or the detector is reset.

Specications (Physical):

Weight: 6.0 oz (170 gm.).

Size: 4.50 inches (11.43 cm.) high x 1.12 inches (2.84 cm.) wide x 6.875 inches (17.46 cm.) deep(including

connector, excluding handle). Handle adds 1.00 inch (2.54 cm.) to depth measurement.

Operating Temperature: -40º F to +180º F (-40º C to +82º C).

Circuit Board: Printed circuit boards are 0.062 inch thick FR4 material with 2 oz. copper on both sides and

plated through holes. Circuit boards and components are conformal coated with polyurethane.

Connector: 2 x 22 contact edge card connector with 0.156 inch (0.396 cm.) contact centers. Key slots located between pins B/2 & C/3, E/5 & F/6, and M/11 & N/12. (See Pin Assignments table.)

Specications (Electrical):

Power: 10.8 to 30 VDC. Solid State outputs, 100 mA maximum; Relay outputs, 130 mA maximum.

Loop Inductance Range: 20 to 2000 microhenries with a Q factor of 5 or greater.

Loop Feeder Length: Up to 5000 feet (1500 m) maximum with proper feeder cable and appropriate loops.

Loop Inputs: Transformer isolated. The minimum capacitance added by the detector is 0.068 microfarad.

Scanning: The loop(s) connected to each detector channel are activated alternately to minimize crosstalk

between adjacent loops connected to the same detector.

Lightning Protection: The detector can tolerate, without damage, a 10 microfarad capacitor charged to 2,000 volts being discharged directly into the loop input terminals, or a 10 microfarad capacitor charged to 2,000 volts being discharged between either loop terminal and earth (chassis) ground.

Detector Reset: Changing the position of either channel’s DIP switches (except the frequency switches) will reset that detector channel. The detector can be reset by connecting a logic ground signal to Pin C (Reset Pin). Reapplication of power after a power loss will also cause the detector to reset. After changing either channel’s frequency selection switches (DIP switches 2 & 3), the channel must be reset.

Relay Outputs: The relay contacts are rated for 6 Amps max., 150 VDC max., and 180 Watts max. switched power.

Response Time: The response time of either channel is affected by the sensitivity level setting and Fail-Safe / Fail-Secure selection of that channel. When set to operate in Fail-Safe mode, response time is 65 ±25 milliseconds for all sensitivity levels. When set to operate in Fail-Secure mode, response time varies and depends on the sensitivity level selected. (See Sensitivity,

-∆L/L, & Response Time table.)

Self Tuning: The detector automatically self tunes and is operational within two seconds after application of power or after being reset. Full sensitivit y and hold time requires 30 seconds of operation.

Environmental & Tracking: The detector is fully self-compensating for environmental changes and loop drift over the full temperature range and the entire loop inductance range.

Grounded Loop Operation: The loop isolation transformer allows operation with poor quality loops (which may include one short to ground at a single point).

Detect Outputs: Per NEMA TS 2, a detection output (Call) is indicated by a closed relay contact (Relay output) or a conducting state (Solid State output). When operating in Fail-Safe mode, a channel’s output defaults to a Call state for any loop failure condition on that channel. When operating in Fail-Secure mode, a channel’s output defaults to a No Call state for any loop failure condition on that channel. In either Fail-Safe or Fail-secure mode, a channel’s output defaults to a Call state upon loss of power. NEMA TS 2 Channel Status Outputs Meets and/or exceeds all NEMA TS 2 status output specications.

Test Mode: A PCB mounted DIP switch enables Test Mode. Test Mode provides a means of verifying proper operation of the detector’s controls and indicators (switches and LEDs). Each channel’s loop oscillator circuit is also checked to verify the correct frequency in each of the four frequency settings.

Sensitivity, -∆L/L, & Response Time

Sensitivity -∆L/L

0 1.28% 65 ±25 milliseconds 3.5 ±2.5 milliseconds 1 0.64% 65 ±25 milliseconds 3.5 ±2.5 milliseconds 2 0.32% 65 ±25 milliseconds 3.5 ±2.5 milliseconds 3 0.16% 65 ±25 milliseconds 3.5 ±2.5 milliseconds 4 0.08% 65 ±25 milliseconds 4.5 ±3.5 milliseconds 5 0.04% 65 ±25 milliseconds 7.0 ±6.0 milliseconds 6 0.02% 65 ±25 milliseconds 11.5 ±10.5 milliseconds 7 0.01% 65 ±25 milliseconds 21.5 ±20.5 milliseconds

Switch ON OFF Factory Default

1 Channel Disabled Channel Enabled OFF 2 3 OFF 4 Fail-Safe Mode Fail-Secure Mode ON 5 Presence Pulse ON 6 7 ON 8 ON

PIN Function PIN Function

A DC (-) Common 1 No Connection B DC (+) Power 2 No Connection C Reset Input 3 No Connection D Channel 1 Loop Input 4 Channel 1 Loop Input E Channel 1 Loop Input 5 Channel 1 Loop Input F Channel 1 Output, Drain 6 No Connection H Channel 1 Output, Source 7 Channel 1 TS 2 Status Output J Channel 2 Loop Input 8 Channel 2 Loop Input K Channel 2 Loop Input 9 Channel 2 Loop Input L Chassis Ground 10 No Connection

M No Connection 11 No Connection

N No Connection 12 No Connection P No Connection 13 No Connection C No Connection 14 No Connection S No Connection 15 No Connection T No Connection 16 No Connection U No Connection 17 No Connection V No Connection 18 No Connection

W Channel 2 Output, Drain 19 No Connection

X Channel 2 Output, Source 20 Channel 2 TS 2 Status Output Y No Connection 21 No Connection Z No Connection 22 No Connection

Four (4) Frequency Selections

Eight (8) Sensitivity Selections

Fail-Safe Fail-Secure

Factory Default Settings

PIN Assignments

Response Time

OFF

Model g - 200 (551-0710-00) 03/23/2020