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436 Series Single Channel Digital Inductive Loop Vehicle Detector

Model 436 Series

Single Channel
Digital Inductive
Loop Vehicle
Detector

Features & Benefits

  • Compatible with all radio control and remote openers. 
  • Features latest state-of-the-art surface mount technology. 
  • Sensitivity Boost, selectable by setting an internal DIP switch, eliminates possible detector dropout during passage of high bed vehicles — this feature is particularly useful in sliding gate situations. 
  • External rotary switch for 10 selectable sensitivity levels. 
  • Two color, high intensity LED status indicator for Detect, Power, and Loop Fault indication. 
  • Self-tuning & complete environmental tracking. 
  • No warm-up required. 
  • Continuous Winky-Blink™ loop monitor which remembers and indicates intermittent and failed loops - a great troubleshooting aid. 
  • If intermittent or failed loops self-heal, the detector will resume normal operation without manually resetting the detector. 
  • Three front panel selectable loop frequencies permit complete elimination of crosstalk. 
  • Large loop inductance range: 20 to 2000 microhenries, allowing operation with a wide range of loops. 
  • 10 pin MS connector mounted on the front panel. 
  • Failsafe or failsecure models available. 
  • Two separate output relays: 
    • Output A is presence output 
      Output B, programmable with internal DIP switches, provides presence, pulse on entry, pulse on exit, or fail output 
  • An infinite presence mode is available by setting an internal DIP switch. 
  • Both outputs can be delayed for 2 seconds, by setting an internal DIP switch, causing the detector to ignore vehicles passing over the loop faster than about 5 miles per hour. 
  • Both outputs can be extended for 0 seconds, 2 seconds, 5 seconds, or 10 seconds, programmable with internal DIP switches. 
  • Detector will not retune if power is lost for approximately 3 seconds and then restored. Prevents vehicle detection from being lost during brief power interruptions. 
  • Front panel mounted reset switch. 
  • Versions available for use with: 120 VAC and 240 VAC. 

To learn more about how using an inductive vehicle loop detector for automatic control of gates, doors, or drive thru's, please read our Quick Reference Guide for Openers.

Specifications

Self-Tuning:  Automatically tunes itself and is fully operational within 1 second after application of power or after being reset. 30 seconds is required before full presence time is possible. 

Environmental Tracking:  Completely automatic over the entire loop inductance range. 

Loop Inductance Range:  20 to 2000 microhenries with Q factor of 5 or greater [includes loop(s) plus feeder (lead-in or home run) cable up to the connector on the detector]. 

Loop Feeder Length:  Up to 2,500 feet (762 m) maximum with proper feeder cable and appropriate loops. 

Loop Input:  Transformer isolated. 

Loop Frequency:  Three switch selectable frequencies (normally in the range of 20 to 80 kilohertz). Note: Changing loop frequency switches may make Winky-Blink™ signal appear. Reset detector manually. 

Reset:  The detector can be manually reset by the front panel switch.  The detector is reset automatically whenever the power is turned on. 

Grounded Loop Operation:  The loop isolation transformer allows operation with poor quality loops (including a single point short to ground). 

Lightning Protection:  Loop input fully protected per NEMA specifications. 

Faulty/Intermittent Loop Monitor:  If the total loop input network inductance goes out of the range specified or suddenly changes more than 25%, both outputs immediately generate a continuous detect output in failsafe detector versions or no detect in failsecure detector versions and the LED begins displaying the Winky-Blink™ mode. This condition continues until the inductance returns to its previous value, at which time the detector outputs automatically resume normal operation. However, the LED will continue in the Winky-Blink™ mode until the detector is reset. See Reset. 

Sensitivity:  Vehicle detection results from a sufficient change in loop inductance (-delta L/L). 10 switch selectable sensitivity levels are shown here (under construction.)

Sensitivity Boost:  Switch selectable, this option increases sensitivity only during the detect period but does not affect the sensitivity level of a vacant loop. When a vehicle enters the loop, the sensitivity is boosted two levels and remains boosted throughout the detect period. When the vehicle leaves the loop, the sensitivity returns to the vacant loop level. 

Output A:  Set for presence mode of operation only. 

Output B:  May be switched for either presence, pulse, or fail mode of operation with a switch. In pulse mode, the pulse occurs on either entry or exit, as set by another switch. The pulse duration is 250 milliseconds. In fail mode, an output occurs whenever a loop fault occurs. 

Call Delay Option:  Switch selectable, this option delays both outputs for 0 or 2 seconds. When set to 2 seconds, the detector will ignore cars passing over the loop faster than about 5 miles per hour. 

Call Extend Option:  Switch selectable, this option extends both outputs for 0 seconds, 2 seconds, 5 seconds, or 10 seconds. 

Presence Modes:  Switch selectable. Applies to output B when output B is set to Presence. 

  • NORMAL: Hold time of 4 minutes minimum for any vehicle detected and is nominally 30 to 60 minutes for cars. Hold time depends on loop geometry and number of turns, vehicle size, and position of vehicle relative to the loop. 
  • INFINITE: Continuous detect output is maintained as long as the vehicle remains on the loop and power is not interrupted for more than approximately 3 seconds.

Detect Indicator:  Dual color light emitting diode (LED) indicates output status of detector. 

  • POWER ON/NO CALL:  Steady green. 
  • NORMAL CALL:  Steady red while a vehicle is being detected. 
  • FAILED OR OUT-OF-RANGE LOOP (WINKY-BLINK™):  Three 100 ms blinks 100 ms apart once every two seconds. 

Failsafe/Failsecure:  Specify version desired when ordering. 

Output Conditions Tables:  Use to determine which version to order. 

Response Time:  Approximately 125 milliseconds after vehicle enters loop. 

Relay Contact Ratings:  10 A max at 250 VDC max; 8 A max at 300 VAC max; 3 hp at 250 VAC. 

Power Interrupt Protection:  Detector will not retune if power is lost for approximately 3 seconds and then restored. Prevents vehicle detection from being lost during brief power interruptions.

Power:  
· 90 - 135 VAC,  50/60 Hz, 6.0 watts max. 
· 180  - 270  VAC, 50/60 Hz, 6.0 watts max. 

Fuse:  
· 120 VAC power: 5 x 20 mm, 3 A, Slo-Blo 
· 240 VAC power: 5 x 20 mm, 3 A, Slo-Blo 

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

Size: Width = 1.5" (3.8 cm); Height = 2.7" (6.9 cm); Depth = 4.6" (11.6 cm), excluding switches and connector. 

Weight: 10.4 oz. (295 grams) 

Internal Circuitry Isolation:  All internal electronic circuitry is isolated from all external circuitry. 
Ruggedized Metal Construction. 

Connector:  MS 3102A-18-1P (on front).  Use 801A Cable. 

    

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