Diablo Controls DSP-100 Series Manuale utente

Diablo Controls, Inc.

Document: DSP100_MAN_A

Released: December 20, 2016

Pros Who Know Trust Diablo

User Manual

DSP-100 Series

Vehicle Detector

DSP-100 User Manual Page 2 of 25 DSP100_MAN_A 
1. Contents 
Table of Figures ......................................................................................................................................................3 
2. Introduction ...........................................................................................................................................4 
3. Technical Data........................................................................................................................................5 
Functional Data.......................................................................................................................................................5 
Electrical Data.........................................................................................................................................................5 
Environmental Data................................................................................................................................................6 
Mechanical Data.....................................................................................................................................................6 
4. Features and Functions...........................................................................................................................7 
Detector Reset........................................................................................................................................................7 
Presence Detection.................................................................................................................................................7 
Pulse Detection.......................................................................................................................................................7 
Fail-safe vs Fail-secure............................................................................................................................................7 
Sensitivity................................................................................................................................................................8 
Frequency ...............................................................................................................................................................8 
Fail Memory Operation ..........................................................................................................................................9 
Delay (Timing versions only)...................................................................................................................................9 
Delay Inhibit (Timing versions only) .......................................................................................................................9 
Extension (Timing versions only)............................................................................................................................9 
Delay Inhibit/Extend on Green (Timing versions only).........................................................................................10 
Indicators..............................................................................................................................................................11 
5. Installation...........................................................................................................................................14 
Detector Installation.............................................................................................................................................14 
Loop Installation...................................................................................................................................................14 
6. Configuration .......................................................................................................................................18 
Basic DIP Switches ................................................................................................................................................18 
Frequency (Switches 5 & 6)............................................................................................................................. 18 
Presence / Pulse (Switch 4) ............................................................................................................................. 18 
Sensitivity (Switches 1, 2, & 3) ........................................................................................................................ 18 
Delay DIP Switches ...............................................................................................................................................19 
Extension DIP Switches.........................................................................................................................................19 
Internal Settings ...................................................................................................................................................20 
Extend Only During Green (Jumper J1) ........................................................................................................... 20 
Fail-Safe / Fail-Secure (Jumper J2)................................................................................................................... 20 
Wiring ...................................................................................................................................................................21 
7. Troubleshooting ...................................................................................................................................22 
No Power LED .......................................................................................................................................................22 
Power LED Flashes Slowly (1 Hz) ..........................................................................................................................22 
Power LED Flashes Quickly (5 Hz).........................................................................................................................22 
Power LED Shows Two Quick Flashes Once Every Two Seconds..........................................................................23 
Detect LED Intermittently Comes On / Stays On Without a Vehicle Present.......................................................23 
Detect LED Will Not Come On With a Vehicle Present.........................................................................................24 
 

DSP-100 User Manual Page 3 of 25 DSP100_MAN_A 
Table of Figures 
Figure 1: DSP-100T and DSP-100 Detectors ...............................................................................................................4 
Figure 2: Physical Dimensions ....................................................................................................................................6 
Figure 3: Output with No Delay or Extension.............................................................................................................7 
Figure 4: Output with Delay .......................................................................................................................................9 
Figure 5: Output with Extension.............................................................................................................................. 10 
Figure 6: Output with Delay and Extension............................................................................................................. 10 
Figure 7: Extend Only During Green J1 Jumper Location ........................................................................................ 10 
Figure 8: Power LED States...................................................................................................................................... 12 
Figure 9: Detect LED States ..................................................................................................................................... 13 
Figure 10: Loop Installation..................................................................................................................................... 16 
Figure 11: Front Panel DIP Switches........................................................................................................................ 18 
Figure 12: Internal Jumper Locations ...................................................................................................................... 20 
 
 

DSP-100 User Manual Page 4 of 25 DSP100_MAN_A

2. Introduction

The DSP-100 vehicle detector has been specifically designed to handle most traffic applications and is very tolerant

of noise and cross-talk conditions. Working on virtually any size loop, the DSP-100 tunes itself automatically and

provides constant tracking to deal with environmental changes. The DSP-100’s inherent noise filtering algorithms

allow it to work reliably in almost any electrical situation.

The DSP-100 is available with a relay or solid-state output. The "RT" and "ST" models have front-panel switches

to select both extension and delay timing. The operation of the timing functions can be modified by using the

Delay Inhibit (also known as Phase Green) input.

The detector uses a 10-pin MS connector for connections.

Figure 1: DSP-100T and DSP-100 Detectors

DSP-100 User Manual Page 5 of 25 DSP100_MAN_A

3. Technical Data

Functional Data

Sensitivity: Eight sensitivities are user selectable.

Setting

Sensitivity

OFF

1.28% -ΔL/L

OFF

.64% -ΔL/L

OFF

.32% - ΔL/L

OFF

.16% -ΔL/L

OFF

.08% -ΔL/L

OFF

.04% -ΔL/L

OFF

.02% -ΔL/L

.01% -ΔL/L

Frequency Settings: There are four frequency settings available. The actual loop frequency is

dependent on loop circuit inductance.

DIP Switch

Frequency

OFF

High

OFF

Medium High

OFF

Medium Low

Low

Response Time: Response time is dependent on the sensitivity selected.

Setting

Response Time

Setting

Response Time

88ms ±12ms

176ms ±24ms

Vehicle Hold Time: Approximately 1 hour for a detection of 1% -ΔL/L.

Electrical Data

Loop Inductance: 20 microhenries to 1500 microhenries (including lead-in inductance). Not all

frequency settings are available at inductances below 30 microhenries.

Operating Voltages: 90 volts to 140 volts AC

Output Rating: Solid-State Open Collector, 30 mA max, 30 VDC max.

Relay 3A, 150 VDC or 300 VAC

Operating Voltage: 90 to 140 volts AC

DSP-100 User Manual Page 6 of 25 DSP100_MAN_A

Environmental Data

Operating Temperature: -35°F to 165°F (-37°C to 74°C)

Storage Temperature: -40°F to 176°F (-40°C to 80°C)

Humidity: Up to 95% relative humidity non-condensing

Mechanical Data

Mounting Orientation: Any orientation is acceptable

Housing Material: Extruded aluminum housing. Sheet aluminum front and rear plates.

Housing Size: 3.500 inches (High) x 2.130 inches (Wide) x 4.231 inches (Deep)

88.90 mm (High) x 54.10 mm (Wide) x 107.47 mm (Deep)

Figure 2: Physical Dimensions

DSP-100 User Manual Page 7 of 25 DSP100_MAN_A

4. Features and Functions

Detector Reset

When any of the 6-position DIP switches (and the 12 DIP switches on the timing version) are changed, the detector

will perform a detector wide reset. Depending how the internal jumper (J2) is set, the LEDs will blink differently.

If the jumper is installed indicating fail-safe operation, both LEDs will blink 500 milliseconds on and off for two

seconds. If the jumper (J2) is not installed indicating fail-secure operation, the LEDs will flash at 50 milliseconds

on and 50 milliseconds off rate for two seconds before returning to their normal states. The detector will not

output any detections during this two second reset period. If a prior loop fault is being displayed it will be cleared.

If a vehicle is over the loop during the reset period it will not be detected.

Presence Detection

If DIP switch 4 (labeled PULSE) is off, the detector will operate in the presence detection mode. The Delay and

Extend features may modify the output behavior. Once activated, the output will remain activated as long as a

vehicle is detected over the loop. After four minutes of continuous detection, the detector will begin to slowly

retune the detector with the goal of tuning out the vehicle that is stalled or parked on the loop over a relatively

long time. The retuning process takes about an hour to complete when tuning out a vehicle detection of 1% ΔL/L.

When the retuning process is complete, any loop area that vehicles can still travel over will still detect a vehicle

as expected. Once the vehicle leaves, the detector will recover from the retuning process within 1 second.

Pulse Detection

If DIP switch 4 (labeled PULSE) is on, the detector will operate in the pulse mode (Pulse on Entry). The pulse

generated by the output will be 125 milliseconds long. The output will follow any programmed Delay time, but

any Extend time will be ignored. If the vehicle remains on the loop detection area for two seconds, the detector

will automatically retune. Thus, any increase in signal strength (decrease in inductance) that exceeds the selected

sensitivity will generate an additional output pulse.

Figure 3: Output with No Delay or Extension

Fail-safe vs Fail-secure

Vehicle detectors can be operated in one of two modes: fail-safe or fail-secure. In general, a fail-safe detector will

activate the output when the loop circuit is failed. This is useful on most calling detectors, stop bar detectors, and

safety loops. Fail-safe is used in applications where it is important to not have an output active if the loop circuit

DSP-100 User Manual Page 8 of 25 DSP100_MAN_A

has failed. The fail-secure mode is useful in counting detectors, speed detectors, and high-security areas or

installations where containment is needed.

A jumper (J2) on the PC board inside the unit determines whether the detector operates in fail-safe or fail-secure.

All DSP-100 detectors come with the jumper installed giving fail-safe operation. If fail-secure operation is desired,

simply remove the jumper (J2).

Sensitivity

The detector has eight user selectable sensitivity levels. In most situations the medium sensitivity 4 setting will

work effectively. For those situations where setting 4 is not sensitive enough, raise the sensitivity one level at a

time until the desired performance is obtained. For those situations where the detector is oversensitive, lower

the sensitivity one level at a time until the desired performance is obtained. The sensitivity is factory set to 0.

Like most inductive loop vehicle detectors, the DSP-100 directly measures the change in frequency of the loop

and from there, calculates the change in inductance when a vehicle interacts with it. The change in inductance is

measured as -ΔL/L (reads as “minus delta L over L”) and is usually expressed as a percentage.

For the eight sensitivities, the thresholds, switch settings, and response times are:

Level

-∆L/L

Response Time

Lowest

1.28%

Off

88ms ±12ms

.64%

Off

88ms ±12ms

.32%

Off

88ms ±12ms

.16%

Off

88ms ±12ms

Normal

.08%

Off

88ms ±12ms

.04%

Off

88ms ±12ms

.02%

Off

88ms ±12ms

Highest

.01%

176ms ±24ms

Frequency

When loops are installed sufficiently far apart from each other, any two loops will not interfere with each other.

However, if two loops are fairly close together (this distance depends on the size of the loops) the inductive fields

may couple together and may interact causing intermittent false detections. The two main variables for inductive

coupling are distance and frequency separation. To aid in avoiding inductive coupling of loops, each DSP-100 unit

comes with two frequency switches. They are binary coded allowing up to four different frequencies to operate

at. If there are suspicions that loops are interacting, change one of the detector’s frequency settings.

DIP Switch

Frequency

OFF

High

OFF

Medium High

OFF

Medium Low

Low

DSP-100 User Manual Page 9 of 25 DSP100_MAN_A

Fail Memory Operation

Normal operation during a loop failure is the green Power LED indicating what type of loop failure (open, short,

or large ΔL/L). During the loop failure, the red Detect LED and the output will be active for fail-safe operation or

inactive for fail-secure operation. If the loop recovers from its failure, the red LED along with the output will

operate normally again. However, the green LED will display Fail Memory by blinking 1850 milliseconds on, 50

milliseconds off, 50 milliseconds on again, and then 50 milliseconds off. This blinking sequence will repeat until a

reset or power cycle occurs. This blinking sequence will inform the user that sometime in the past this particular

detector detected a loop failure.

Delay (Timing versions only)

Delay is the time added after a vehicle arrives in the detection area but before the output is activated. During the

delay interval the output relay will remain de-activated, requiring that the vehicle stay in the detection area for

the full delay time before activating the output. This is useful at sites where right turns on red are allowed. This

allows a vehicle to arrive at a red signal, come to a full stop, and proceed to make a right turn without the detector

ever activating and placing a call into a phase. This interval is indicated by the red Detect LED blinking slowly at

200 milliseconds on followed by 200 milliseconds off repeatedly until the interval is complete. Delay time can be

set from 1 second to 63 seconds in 1 second increments.

Figure 4: Output with Delay

Delay Inhibit (Timing versions only)

Normal operation always honors any programmed delay time. However, by connecting the AC green input for

that phase to connector pin J (Delay Inhibit), the DSP-100 will delay only when the green is not active. During the

green interval, any programmed delay time will be ignored.

Extension (Timing versions only)

Extension is the time added after a vehicle leaves the detection area. During this interval, the output will remain

activated. If another vehicle arrives during this extension interval, the remainder of the extension time is canceled

and the detector returns to the normal presence state. This interval is indicated by the red Detect LED blinking

fast at 50 milliseconds on followed by 50 milliseconds off repeatedly until the interval is complete. Extension time

can be set from 0.25 seconds to 15.75 seconds in 0.25 second increments.

DSP-100 User Manual Page 10 of 25 DSP100_MAN_A

Figure 5: Output with Extension

Figure 6: Output with Delay and Extension

Delay Inhibit/Extend on Green (Timing versions only)

Normal operation always honors any programmed extension time. By removing jumper J1 inside the detector,

and connecting the AC green input for that phase to connector pin J (Delay Inhibit), the DSP-100 can be set to

extend only during the green interval. Any vehicle exiting the detection area during the non-green intervals of

the associated phase will not activate the extension interval on the detector.

Figure 7: Extend Only During Green J1 Jumper Location

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