Editraffic B-SP2 Operating Instructions

VII. L o op I n s t a l l a ti on :

CONTINUOUSLY WOUND

turn 2

turn 1

FEEDER SLOT

END OF SAW CUT

Reno LW

-

116-S for 1/4" slots

ROAD SURFACE

SAW SLOT

SEALANT

1" piece spaced

LOOP WIRE

3 TURNS

LOOP PERIMETER

NUMBER OF TURNS

The vehicle detection characteristics of an inductive loop detector are greatly influenced by the loop size and
proximity to moving metal objects such as gates. Vehicles such as small motorcycles and high bed trucks can
be reliably detected if the proper size loop is selected. If the loop is placed too close to a moving metal gate, the
detector may detect the gate. The diagram below is intended as a reference for the dimensions that will
influence the detection characteristics.

General Rules:

1. The detection height of a loop is 2/3 the shortest leg
(A or B) of the loop. Example: Short leg = 6 feet,
Detection Height = 4 feet.

2. As the length of leg A is increased, distance C must
also increase.

A = 6 ft 9 ft 12 ft 15 ft 18 ft 21 ft
C = 3 ft 4 ft 4.5 ft 5 ft 5.5 ft 6 ft

3. For reliable detection of small motorcycles, legs A
and B should not exceed 6 feet.

A = Loop dimension parallel to the gate

B = Loop dimension perpendicular to the gate

C = Distance of the loop from the gate

SLIDE GATE

A

L o op I n s t a l l a ti on - S aw C ut T ype

1 Mark the loop layout on the pavement.

2 Set the saw to cut to a depth (typically 2" to 2.5") that ensures a minimum of 1" from the top of t he wire to pavement surface. The

saw cut w idth should be larger than the wire diameter to avoid damage to the wire insulat ion when placed in the saw slot. Cut the
loop and feeder slots. Remove sharp inside corners that can damage the loop wire insulation. Remove all debris fro m the saw slot
with compressed air. Check that the bottom of the slot is smooth.

3 It is highly recommended that a continuous length of wire be used to form the loop and feeder to the detector. Loop wire is typically

14, 16, 18, or 20 AWG with cross-linked polyethylene insulation. Use a wood stick or roller to insert the wire t o the bottom of the
saw slot (do not use sharp objects). Wrap the wire in the loop saw slot until the desired number of turns is reached. Each turn o f
wire must lay flat on top of the previous turn.

4 The wire must be twisted together a minimum of 6 twists per foot from the end of the saw slot to the detector.

5 The wire must be held firmly in the slot with 1" pieces of backer rod every 1 to 2 feet. This prevents the wire from floating when the

loop sealant is applied.

6 Apply the sealant. The sealant selected should have good adhering properties w ith contract ion and expansion characteristics to

similar to those of the pavement material.

10 feet - 13 feet 5
14 feet - 26 feet 4
27 feet - 45 feet 3

46 feet - 100 feet 2

100 feet and up 1

1

1/8" to 1/4" SAW SLOT

THE WIRE IS

IN THE LOOP SAW SLOT
FOR THE REQUIRED
NUMBER OF TURNS (2
turns shown)

3

REMOVE SHARP
INSIDE CORNERS

THE WIRES MUST BE
TWISTED TOGETHER
6 TWISTS PER FOOT
FROM THE END OF
THE SAW CUT TO
THE DETECTOR

6

5

4

BACKER ROD

about every 1'

Recommended Loop Wire: Reno LW-120 for 1/8" slots

Operating Instructions

Model B-SP2 Series

Ext end ed Pul se Out put (O ne Sec ond )

SINGLE CHAN NE L L O O P DETECTORS

C

B

2

MIN

1"

I. General:

Please verify source voltage before applying power. The model designation indicates the input power required,
internal Presence / Pulse DIP switch settings, and Fail-Safe / Fail-Secure configuration for the detector as
follows.

Model B-xx-xx-x-SP2

Blank = Fail-Safe
S = Fail-Secure
Blank = Internal DIP switches set to TruePresenceTM / Pulse-on-Entry
DP = Internal DIP switches set to TruePresenceTM / TruePresenceTM
3 or 1 = 120 VAC
4 or 5 = 12 VDC / 24 VDC / 24 VAC
8 or 35= 240 VAC

NOTE: Models B-3, B-4 and B-8 are fitted with a rear mounted, 11-pin, Amphenol style connector.

Models B-1, B-5, and B-35 are fitted with a rear mounted, 10-pin, MS style connector.

The detector is factory configured for either Fail-Safe or Fail-Secure operation (see unit side label). The output
state of each output relay in either Fail-Safe or Fail-Secure mode is listed in the table below.

Relay Power Failure Loop Failure Power Failure Loop Failure

A
B

No Call No Call No Call No Call

Fail-Safe Fail-Secure

Call Call No Call No Call

II. Indicators and Controls:

i. Power / Detect / Fail LEDs:

The detector has one green and two red LED indicators that are used to provide an indication of the
detector’s power status, output state, and/or loop failure conditions. The table below lists the various
indications and their meanings.

Status PWR (Power) LED DET (Detect) LED FAIL LED

Off
On

Flash

Note: If the supply voltage drops below 75% of the nominal level, the power LED will turn off, pro viding a
visual indication of low s upply voltage. Model B-SP2 detectors will operate with supply voltage as low as
70% of nominal supply voltage.

No power or low power Output(s) Off Loop OK

Normal power to detector Output(s) On Open Loop

N/A

4 Hz (50% duty cycle)

Two second timing delay

activated

1 Hz (50% duty cycle)

Shorted Loop

1 Hz (5% duty cycle)

Waiting for release of FREQ switch

to enter diagnostics mode

(See Failed Loop Diagnostics)

ii. Frequency L EDs:

The four red LED indicators provide an indication of the current detector operating frequency.

iii. Front Pa nel Pushbutton Switches :

Two m omentary contact, pushbutton switches are used to control the following.

RESET - Push the front panel mounted pushbutton labeled RESET to reset the detector.

FREQ - In situations where loop geometry forces loops to be located in close proximity to one another, it

may be necessary to select different frequencies for each loop to avoid loop interference, commonly known
as crosstalk. The front panel mounted pushbutton labeled FREQ can be used to configure the detector to
operate at one of four (4) frequencies corresponding to Low, Medium / Low, Medium / High, and High.
Press the FREQ pushbutton to toggle through and select one of the four frequency settings.

P/N 889-0205-01 Rev: June 2020 4 Model B-SP2 Operating Instructions Insert

NOTE: After changing the frequency setting, the detector must be reset by pressing the front panel
RESET pushbutton.

iv. Internal DIP Switches:

Switch ON OFF Factory Default

1
2
3

4

5

6

7

8

* Dual Presence (DP) models have DIP switch 8 set to the OFF position.

Two Second Delay No Delay

Exit Pulse Relay B Entry Pulse Relay B

Pulse Mode Relay B Presence Mode Relay B

(See Table under Sensitivity Section)

Sensitivity Boost No Boost OFF

Limited Presence True PresenceTM OFF

Sensitivity

OFF

ON
ON

OFF

OFF

ON *

Sensi tivity (DIP Switches 1, 2, and 3):

DIP switches 1, 2, and 3 select one of the eight (8) sensitivity levels available as shown in the table below.
0 is the lowest setting, 3 is normal, and 7 is the highest setting. Use the lowest sensitivity setting that will
consistently detect the smallest vehicle that must be detected. Do not use a sensitivity level higher than
necessary.

Switch 0 1 2 3 * 4 5 6 7

1
2
3

* Factory default setting.

OFF OFF OFF OFF * ON ON ON ON
OFF OFF ON ON * OFF OFF ON ON
OFF ON OFF ON * OFF ON OFF ON

Sensitivity

Output Delay (DIP Switch 4):

A two second delay of Outputs A and B can be activated by setting DIP switch 4 to the ON position.
Output delay is the time the detector outputs are delayed after a vehicle first enters the loop detection zone.
If the two second Output Delay feature is activated, the output relays will only be turned on after two
seconds have passed with a vehicle continuously present in the loop detection zone. If the vehicle leaves
the loop detection zone during the two second delay interval, detection is aborted and the next vehicle to
enter the loop detection zone will initiate a new full two second delay interval. The detector provides an
indication that a vehicle is being detected but that the outputs are being delayed, by flashing the front panel

DET LED at a four Hz rate with a 50% duty cycle. The factory default setting is OFF (no Output Delay).

Sensi tivity Boost (DIP Switch 5):

DIP switch 5 can be turned ON to increase sensitivity during the detect period without changing the
sensitivity during the no detect period. The boost feature has the effect of temporarily increasing the
sensitivity setting by up to two levels. When a vehicle enters the loop detection zone, the detector
automatically boosts the sensitivity level. As soon as no vehicle is detected, the detector immediately
returns to the original sensitivity level. This feature is particularly useful in preventing dropouts during the
passage of high bed vehicles. The factory default setting is OFF (no Sensitivity Boost).

Relay B Pulse Mode (DIP Switch 6):

Relay B is the pulse output. Its output mode is controlled by DIP switch 6. Relay B can be configured to
output a one second pulse when a vehicle enters the loop detection zone (Pulse-on-Entry) or when a vehicle
leaves the loop detection zone (Pulse-on-Exit). Pulse-on-Entry is selected when DIP switch 6 is OFF.
Pulse-on-Exit is selected when DIP switch 6 is ON. DIP switch 6 has no effect on Relay A (the presence
output). The factory default setting is OFF (Pulse-on-Entry).

NOTE: The setting of this DIP switch has no effect on the output mode of Relay B if DIP switch 8 is set
to the OFF position (Presence Mode Relay B). For additional details, refer to the Relay B Output Mode
section on page 3.

Presence Hold Time (DIP Switch 7):

Output A always functions as a presence output. DIP switch 3 can be used to select one of two presence
hold times; Limited Presence or True PresenceTM. Both modes provide a Call output when a vehicle is
present in the loop detection zone. True PresenceTM is selected when DIP switch 7 is OFF. If DIP
switch 7 is ON, Limited Presence is selected. Limited Presence will typically hold the Call output for
about one to three hours. True PresenceTM will hold the Call as long as the vehicle is present in the loop
detection zone provided that power is not interrupted or the detector is not reset. TruePresenceTM time
applies only for normal size automobiles and trucks and for normal size loops (approximately 12 ft2 to 120
ft2). The factory default setting is OFF (True PresenceTM Mode).

Relay B Output Mode ( DIP Switch 8):

Relay B has two modes of operation; Pulse or Presence. Its output mode is controlled by DIP switch 8.
When set to operate in Pulse Mode (DIP switch 8 ON), Relay B outputs a one second pulse when a vehicle
enters the loop detection zone or when a vehicle leaves the loop detection zone. (See the Relay B Pulse
Mode section on page 2 for details.) When set to operate in Presence Mode (DIP switch 8 OFF), the
output of Relay B is the same as that of Relay A. (See the Presence Hold Time section on page 2 for
details.) The factory default setting is ON (Pulse Mode Relay B) unless dual presence (DP) operation is
specified, in which case the factory default setting is OFF (Presence Mode Relay B).

III. Call Memory:

When power is removed for two seconds or less, the detector automatically remembers if a vehicle was present
and a Call was in effect. When power is restored, the detector will continue to output a Call until the vehicle
leaves the loop detection zone (loss of power or power dips of two seconds or less will not bring a gate arm
down onto cars as they wait at the gate).

IV. Failed Loop Diagnostics:

The FAIL LED provides an indication of whether or not the loop is currently within tolerance. If the loop is out
of tolerance, the FAIL LED indicates whether the loop is shorted (one Hz flash rate) or open (steady ON). If
and when the loop returns to within tolerance, the FAIL LED will turn off to indicate that the loop fault
condition has been corrected and that the loop is once again within tolerance.

The Model B-SP2 detector automatically stores the last loop failure type in non-volatile memory. To determine
the type of loop failure that has last occurred, press and hold the FREQ pushbutton for at least three seconds.
When the FAIL LED begins flashing at one Hz rate with 5% duty cycle, release the FREQ pushbutton. The
detector will then display the last loop failure type detected (if any). This indication will be displayed one time
for about fifteen seconds unless terminated by pressing the RESET or FREQ pushbutton. The non-volatile
memory used to store the last loop failure type is automatically cleared each time it is interrogated.

V. Pin Connections:

Models B-3, B-4, and B-8 (Reno A & E Wiring Harness Model 802-4)

Pin Wire Color Function

1
2
3
4
5
6
7
8
9

10

11

Black AC Line / DC +
White AC Neutral / DC Common

Orange Relay B, Normally Open (N.O.)

Green No Connection

Yellow Relay A, Common

Blue Relay A, Normally Open (N.O.)
Gray Loop

Brown Loop

Red Relay B, Common

Violet or

Black / White

White / Green or

Red / White

Relay A, Normally Closed (N.C.)

Relay B, Normally Closed (N.C.)

Models B-1, B-5, and B-35 (Reno A & E Wiring Harness Model 801-4)

Pin Wire Color Function

A
B
C
D
E
F
G
H

I
J

Note: All pin connections listed above are with power applied, loop(s) connected, and no vehicle detected.

White AC Neutral / DC Common

Brown Relay A, Normally Open (N.O.)

Black AC Line / DC +

Red Loop
Orange Loop
Yellow Relay A, Common

Blue Relay A, Normally Closed (N.C.)

Green Chassis Ground

Violet Relay B, Common

Gray Relay B, Normally Open (N.O.)

VI. Warnings:

Separately, for each loop, a twisted pair should be created consisting of only two (2) loop wires running the
entire distance from the loop to the detector (including runs through all wiring harnesses) at a minimum of six
(6) complete twists per foot. For trouble free operation, it is highly recommended that all connections
(including crimped connectors) be soldered.

2 3