FAAC DTEK110VAC User Manual

D-TEK Vehicle Loop Detector - Operating Instructions

We at EMX have designed the new D-TEK vehicle loop detector with the following objectives in mind:

1. Compact package to allow easy installation into small operator housings.

2. All the controls are accessible from the outside for easy installation and operation.

3. Integral loop conditioner is provided, to enable detector operation with marginal loops.

4. Provide all the features and controls necessary for a variety of applications.

5. Use metal housing for maximum durability and RF blocking.

6. Provide maximum surge protection on all inputs and outputs of the detector.

We took extra care to achieve and exceed these objectives. For example the controls are divided into two
groups. The group on the front of the detector is for basic operation and the group on the back of the detector
is for advanced settings. This way the more advanced settings are not visible to the casual user.

There is no skimping on the quality in the D-TEK detector. The housing is made from aircraft quality
anodized aluminum. All the switches have gold plated contacts and are sealed for protection. The detector is
protected by easily replaceable fuse, snubbing circuitry on the relay contacts, metal oxide varistor on the
power input and triple protection on the loop input.

The D-TEK features are extensive and they include full loop diagnostics with frequency counter, 10
sensitivity settings, delay and extend features, "fail safe" and "fail secure" operation, automatic sensitivity
boost, pulse or two presence relay operation and more.

Technical Information

Detector Connections

Pin Function Harness
1 Power White
2 Power Black
3 Relay 2 N.O Orange
4 Ground Green
5 Presence Relay Comm.. Yellow
6 Presence Relay N.O. Blue
7 Loop Gray
8 Loop Brown
9 Relay 2 Comm.. Red
10 Presence Relay N.C. Pink
11 Relay 2 N.C. Violet

Note: Functions on pins 6 and 10 are reversed if DIP 4 is set to OFF "Fail

Secure" operation

DTEK.lwp Created: March 23, 1998 Revised: January 16, 2003 10:44AM Pages:5 Page:1

Front Indicators

1. Green Led is ON - the detector is powered.

2. Red Led is ON - the detector detected a vehicle

3. Green Led is Blinking - the loop failed and is shorted or disconnected

4. Green Led is Blinking with two consecutive fast blinks - the loop failed in the past and
now is working correctly.

5. Red Led is Blinking at the start of a vehicle detection - the Filter function is ON

6. Red Led is Blinking at the end of a vehicle detection - the Extend function is ON

7. Red Led is Blinking during a vehicle detection - 4 minute limited presence time has
expired.

Note: Functions on pins 6 and 10 are reversed if DIP 4 is set to OFF

Front Controls

Reset This toggle switch when pushed momentarily down will reset the detector

Frequency Counter This toggle switch when pushed momentarily up will count the frequency

on the loop. This count is displayed by the Red Led blinks, each blink
represents frequency of 10K Hz. Count between 3 to 13 blinks confirms
that the loop detector is tuned to the loop.

Frequency This toggle switch controls the loop frequency. Set different frequencies

on adjacent loops. Verify frequencies with the frequency counter by
counting the Red Led blinks.

Back Controls

Sensitivity This rotary switch controls the detector sensitivity. During normal

operation the sensitivity level is set to 3 or 4.

DIP Switch Functions

ONOFFDIP

Presence on Relay II Pulse on Relay II1
Pulse on Un-detect Pulse on detect2
4 minute limited presence time Constant presence3
"Fail Safe" "Fail Secure"4
Filter On Filter Off5
Automatic Sensitivity Boost On ASB Off 6
6 seconds Extend detect7
3 seconds Extend detect8

When Dip 7 and 8 are in ON position the extend time is 9 seconds.

DTEK.lwp Created: March 23, 1998 Revised: January 16, 2003 10:44AM Pages:5 Page:2

Warning: Do not use limited presence setting and / or "Fail Secure" setting for reversing gates, doors or
barriers.

DIP - Detector Functions

1. Presence function is provided always by the presence relay output on pins 5, 6, and 10.
These outputs are active when the detector detects a car. If there is a need for an
additional presence output the Relay 2 can be configured as a second presence output by
setting DIP 1 to ON position.

2. Pulse function is provided by the Relay 2 output on pins 3, 9, and 11. To obtain pulse on
Relay 2 set DIP 1 to OFF position. The pulse of about 0.5 second can be generated when
the car enters the loop or when it exits. To generate pulse on vehicle entry to the loop set
DIP 2 to OFF position. To generate pulse on vehicle exit from the loop set DIP 2 to ON
position.

3. The presence relay provides constant output as long as the car is detected on the loop. To
obtain constant presence time set DIP 3 to OFF position. In some applications limited
presence time is required. To obtain limited presence time of approximately 4 minutes set
DIP 3 to ON position. Be aware that the detector relay will be released after 4 minutes
even if the vehicle is still detected by the detector. This may by a serious hazard in
applications where gates, doors or barriers are reversed, therefore never use this option in
these applications.

4. When DIP 4 is set to ON position the detector works in "Fail Safe" mode of operation the
detector will issue a detect signal when a car is detected, loop is disconnected or shorted,
or when the power to the detector is interrupted. It is strongly recommended to use the
detector in this mode.

In some application there is a need to ignore the loop or power failures and only to
provide the detect signal when a car is detected on the loop. To ignore loop or power
failures set the detector to "Fail Secure" by setting DIP 4 to OFF position. Do not use this
setting for application where gates, doors or barriers have to be reversed.
Note: Functions on pins 6 and 10 are reversed if DIP 4 is set to OFF

5. In some applications it is necessary to filter out short detections such as cross traffic or
short burst of radio frequency such as keying of a CB transmitter. To ignore these short
detections set DIP 5 to ON position. This will cause any detection that is shorter than 2
seconds to be ignored.

6. To increase detection height when detecting high bed vehicles set DIP 6 to ON position.
This setting will cause the sensitivity to automatically increase once the front axle of the
truck is detected. The sensitivity will go back to the normal level once the truck left the
loop.

7. To extend the presence output for 6 seconds after the vehicle left the loop set DIP 7 to
ON position.

8. To extend the presence output for 3 seconds after the vehicle left the loop set DIP 8 to
ON position.

DTEK.lwp Created: March 23, 1998 Revised: January 16, 2003 10:44AM Pages:5 Page:3

Note: If DIP 7 and DIP 8 are set to ON position the presence output will be extended 9 seconds after the
vehicle left the loop.

Troubleshooting

CorrectionPossible CauseSymptom

Green indicator flashes

Green indicator flashes
with two consecutive fast
blinks

Detector stays in detect
mode after the car left the
loop and fails to undetect.

Detector detects
intermittently even when
there is no car on the loop.

No input voltageGreen indicator is not ON

Loop wire shorted or
disconnected

Loop wire was temporarily
shorted or disconnected

1. Faulty loop

2. Poorly crimped terminals

3. Loose connections

1. Faulty loop

2. Poorly crimped terminals

3. Loose connections

4. Cross-talk between
adjacent loop detectors

1. Check voltage on pins 1 and 2.

2. Replace internal fuse

3. Check wiring to detector

1. Check loop resistance on pins 7
and 8 it should be less than 5
ohms and more than 0.5 ohms.

1. Check loop resistance on pins 7
and 8 while driving over the loop it
should be less than 5 ohms and more
than 0.5 ohms. The reading should be
steady.

1. Perform megger test between loop
lead and ground the reading should
be larger than 100 megaohms.

2. Check that loop is tightly
connected to proper terminals

3. Check that splices are tightly
soldered and sealed against moisture.

1. Perform megger test between loop
lead and ground the reading should
be larger than 100 megaohms.

2. Check that loop is tightly
connected to proper terminals

3. Check that splices are tightly
soldered and sealed against moisture.

4. Set adjacent loops on different
frequencies.

DTEK.lwp Created: March 23, 1998 Revised: January 16, 2003 10:44AM Pages:5 Page:4

Technical Specifications
Power: the detector is available in the following voltages, 12V AC/DC, 24V AC, 24V DC, 110V

AC, 220V AC. maximum current draw 100mA.

Low power detector is available with maximum current draw of 60mA

Temperature: -40F to + 180F
Environmental Protection: Circuit board is conformally coated
Enclosure: Extruded anodized aluminum, Height = 3.25 inches 83 mm

Width = 2.56 inches 40 mm
Depth = 3.65 inches 90 mm

Output Relays: 5A/125 V AC standard version, 1A/125 V AC low current version
Connector: 86CP11 compatible with 11pin Octal DIN rail mountable socket or

wire harness

Surge Protection: The detector is protected with neon discharge lamps, Zener diodes

and surge arrestors.

Loop Input: Transformer isolated
Grounded Loop: The loop isolation transformer allows operation with poor quality

loops.

Loop Inductance Range: 20 to 2000 micro henries with Q factor of 5 or higher.
Tuning: Detector automatically tunes to the loop after power application or

reset.

Tracking: Detector automatically tracks and compensates for environmental

changes

Power Indicator: Green LED solid light indicates power
Loop Failure Indicator: Green LED blinks indicates loop problem
Loop Failure Memory: Green LED blinks with fast consecutive blinks indicates past loop

problem that healed.

Detect Indicator: Red LED solid light indicates detection
Extend Indicator: Red LED blinks after a car left the loop indicates time extend

feature

Sensitivity: is set by 10 position rotary switch
Frequency: is set three position toggle switch
Infinite Presence Mode: DIP switch selectable presence
Limited 4 Minutes
Presence Time: DIP switch selectable
Second Presence Relay: DIP switch selectable
Pulse On Exit / Entry: DIP switch selectable
Fail Safe / Secure : DIP switch selectable
Filter: DIP switch selectable 2 seconds
Extended Detection: DIP switch selectable 3, 6 and 9 seconds

DTEK.lwp Created: March 23, 1998 Revised: January 16, 2003 10:44AM Pages:5 Page:5