Models 927/929 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 a DIP switch, eliminates possible detector dropout during passage of high bed vehicles — a feature particularly useful in sliding gate situations.
• Rotary switch for 10 selectable sensitivity levels.
• Two color, high intensity status LED indicator for Detect, Power, and Loop Fault indication.
• 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.
• Self-tuning and complete environmental tuning.
• Four DIP switch selectable loop frequencies permit complete elimination of crosstalk.
• Large loop inductance range, 20 to 2000 microhenries, allowing operation with a wide range of loops.
• Failsafe or failsecure models
• Molex 10-pin male or female connector.
• Two separate output relays (both with DIP switch selectable 2 second delay or 0-10 second extension options):
Output A is presence
Output B is DIP switch selectable for presence, pulse on entry, pulse on exit, or fail output.
• Will not retune if power is lost for approximately three seconds and then restored.
• Compact board size: 4.14" L x 2.71" W
• An infinite presence mode is available by setting a DIP switch.
• Versions available for use with 12 VDC or 24 VDC.

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 one second after application of power or after being reset. Thirty 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 five 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' (762 m) maximum with proper feeder cable and appropriate loops.

Loop Input: Transformer isolated.

Loop Frequency: Four frequencies (normally in the range of 20 to 80 kilohertz) are switch selectable.

Reset: The detector can be reset by momentarily changing the sensitivity setting or removing power for 30 seconds or more.

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%, outputs A and B immediately generates a continuous DETECT output in failsafe detector versions or NO DETECT in failsecure detector versions, and the red Detect LED will begin 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 red DETECT LED will continue in the Winky-Blink™ mode until the detector is manually reset or a power interruption occurs.

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

Sensitivity Boost: An internal switch may be used to increase sensitivity only during the DETECT period, but does not effect the sensitivity level of a vacant loop. When a vehicle enters the loop, the sensitivity is boosted three 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.

Output B: May be set by DIP switch for presence, pulse on entry, pulse on exit, or fail.

Presence Modes: Applies to output B only when Output B is set to Presence (DIP switch selectable).

NORMAL: Hold time is nominally 30 to 60 minutes for cars. Hold time depends on loop geometry and number of turns, vehicle size, and position of the vehicle relative to the loop.
INFINITE: Continuous detection is maintained as long as a vehicle is on the loop(s) and power is not interrupted for more than 3 seconds.

Relay Contact Ratings: 0.5 A max, 150 VDC max, 300 VAC max, and 30 watts max switched power.

Detect Indicator: High intensity red light emitting diode (LED) indicates output status of detector.

NORMAL CALL: On steady while a vehicle is being detected.
FAILED OR OUT-OF-RANGE LOOP (WINKY-BLINK™): Three 50 ms blinks 50 ms apart once per second. Note: changing the loop frequency switch may make Winky-Blink™ signal appear. Reset detector manually.

Failsafe/Failsecure: Specify which version of this detector is desired when ordering (see Output Conditions Tables).

Response Time: Approximately 100 milliseconds after vehicle enters loop.

Power:

10-16 VDC, 95 milliamps max

20-32 VDC, 65 milliamps max

Fuse: 120 VAC: 3 Amp, 2AG, Slo-Blo

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

Size: 4.14" L x 2.71" W (10.5 x 6.9 cm); board thickness 0.07" (0.18 cm); max component height on board 0.76" (1.93 cm).

Weight: 10.4 oz (295 g)

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

Ruggedized Construction.

Connector:

Model 927: 10 pin male Molex P/N 09-72-2101
Model 929: 10 pin female Molex P/N 09-62-3101 Connecting Cable: Not included. Must be ordered separately.
Model 927: 1927 or 1927-CE (shielded cable)
Model 929: 1929 or 1929-CE (shielded cable)

Note for European Usage: Models 927 and 929 are CE approved when used with IDC's 1927-CE or 1929-CE connecting cables (or equivalent). Users wishing to fabricate their own cables should contact IDC for specifications.

Pin Assignments: Under Construction

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