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DSP-100 User Manual

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DSP100_MAN_A

Technical Data

Functional Data

Sensitivity:

Eight sensitivities are user selectable.

Setting

Sensitivity

OFF OFF OFF

1.28% -

ΔL/L

OFF OFF ON

.64% -

ΔL/L

OFF ON OFF

.32% -

ΔL/L

OFF ON

.16% -

ΔL/L

ON OFF OFF

.08% -

ΔL/L

ON OFF ON

.04% -

ΔL/L

ON 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

Содержание DSP-100 Series

Страница 2: ...reen 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...

Страница 3: ...th 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 ...

Страница 4: ...racking 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 Ph...

Страница 5: ...OFF OFF High OFF ON Medium High ON OFF Medium Low ON ON Low Response Time Response time is dependent on the sensitivity selected Setting Response Time Setting Response Time 0 88ms 12ms 4 88ms 12ms 1 88ms 12ms 5 88ms 12ms 2 88ms 12ms 6 88ms 12ms 3 88ms 12ms 7 176ms 24ms Vehicle Hold Time Approximately 1 hour for a detection of 1 ΔL L Electrical Data Loop Inductance 20 microhenries to 1500 microhenr...

Страница 6: ... 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 ...

Страница 7: ...n 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 detecto...

Страница 8: ... 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 S1 S2 S3 Response Time Lowest 0 1 28 Off Off Off 88ms 12ms 1 64 On Off Off 88ms 12ms 2 32 Off On Off 88ms 12ms 3 16 On On Off 88ms 12ms Normal 4...

Страница 9: ...s 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 seco...

Страница 10: ...ammed 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 Jum...

Страница 11: ... the Fail Memory feature will display the Prior Fault indication Shorted Loop When the detector senses that a loop is shorted or the inductance is too low the LED will turn on for 100 milliseconds then off for 100 milliseconds repeatedly for the duration of the fault If the fault is corrected the Fail Memory feature will display the Prior Fault indication Large Change Fault When the detector sense...

Страница 12: ...cure At the start of a reset event a DIP switch change sensitivity change or power cycle the LED will turn off for 500 milliseconds on for 500 milliseconds blink repeatedly with 50 milliseconds on followed by 50 milliseconds off for one second and then display its normal state Delay Interval A vehicle has been detected but the output is not activated due to the programmed delay feature being activ...

Страница 13: ...be activated During this interval the LED will blink quickly at 50 milliseconds on and 50 milliseconds off If another vehicle enters the detection area during this interval the extension time is cancelled and the LED will return to the solid state Note There is no delay interval for any newly arriving vehicle if a vehicle is already in the detection area or the detector is in the extension interva...

Страница 14: ...his would be a wire with an XLP jacket such as XHHW THHN or similar wire types should never be used for loop wire The gauge of the wire to use depends on two factors Distance in cable feet from the loop to the detector and stresses the wire may see The gauge of the wire can be 20 AWG as long as the detector is within 50 feet of the loop in cable distance For 50 to 100 feet use at least 18 AWG wire...

Страница 15: ...oximately 120 µH and would there meet the ratio guideline If you are unsure about your particular installation call tech support for guidance Installation Practices Permanent loops should be installed into the road surface by cutting slots into the road surface using a saw with an appropriate cutting disk for the road surface The slot cut should be wide enough that the wire being used will easily ...

Страница 16: ...ous piece of wire from the detector to the loop all of the turns in the loop and back to the detector Remember to make allowance for shrinkage in the wire length when the portion of the wire not in the roadway surface is twisted The twisting is important for dealing with electrical noise A splice of the loop wire should never be made in the roadway If the loop wire needs to be spliced to another c...

Страница 17: ...t used should be appropriate for the roadway surface that was cut Generally epoxy or polyester based sealants are used for concrete surfaces and polyester or urethane based sealants are used for asphalt surfaces However these are not hard guidelines and specific circumstances will determine which type of sealant should be used Once the loop wire leaves the saw slot it should be twisted at least th...

Страница 18: ...ifferent frequencies to operate at If there are suspicions that loops are interacting change one of the detector s frequency settings DIP Switch Frequency 5 6 OFF OFF High OFF ON Medium High ON OFF Medium Low ON ON Low Presence Pulse Switch 4 This switch selects what output mode the detector operates in When the switch is off the detector will operate in the presence mode The output will be activa...

Страница 19: ...n Off Off On Off 35 On On Off Off Off On 51 On On Off Off On On 4 Off Off On Off Off Off 20 Off Off On Off On Off 36 Off Off On Off Off On 52 Off Off On Off On On 5 On Off On Off Off Off 21 On Off On Off On Off 37 On Off On Off Off On 53 On Off On Off On On 6 Off On On Off Off Off 22 Off On On Off On Off 38 Off On On Off Off On 54 Off On On Off On On 7 On On On Off Off Off 23 On On On Off On Off 3...

Страница 20: ...On Off On On Off On 15 25 On Off On On On On 3 50 Off On On On Off Off 7 50 Off On On On On Off 11 50 Off On On On Off On 15 50 Off On On On On On 3 75 On On On On Off Off 7 75 On On On On On Off 11 75 On On On On Off On 15 75 On On On On On On Internal Settings There are two jumpers on the inside of the detector case labelled J1 and J2 See figure below for location of these jumpers Extend Only Du...

Страница 21: ...r be used for any connection in the loop circuit Connector Standard 10 pin MS pin assignments for a NEMA TS1 single channel shelf mount detector are shown below Pin Function A AC Neutral B Relay Common or Emitter C AC Line D Loop E Loop F Relay Normally Open or Collector G Relay Normally Closed H Chassis Ground I Not Used J Delay Inhibit Input a k a Phase Green Input ...

Страница 22: ...ked This is done using an inductance meter The inductance of the loop should be less than 1500 microhenries It is very unusual to have a loop with an inductance value this high but it is possible with very large loops and many turns If the loop inductance value is above 1500 microhenries the loop will have to be replaced with a loop with less inductance Contact technical support for help with very...

Страница 23: ...lly open loop failures Any splices in the loop wire should be redone If there are any wire nuts used in the loop circuit remove them and replace with a crimp connection or preferably a soldered connection The open loop fault could also be a fatigued point in the loop wire This can occur at locations where the loop wires cross an expansion joint in the road surface Any place where the loop wires mu...

Страница 24: ...e Call Technical Support in this case If the electrical interference is occurring in the wire from the loop to the detector additional twisting should help mitigate the issue Moving Objects in Proximity to the Loop Objects that can move and are metallic or somehow electrically conductive may cause detection issues A common issue is movement of a slide gate or gate arm in close proximity to a loop ...

Страница 25: ...set to 7 and the red LED still does not come on and you have another operating detector in the same box swap the loops between a working detector and a failing detector If the problem follows the loop the loop is the problem If it stays in the same detector replace the detector ...

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