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DSP-10 User Manual

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DSP10_MAN_C

3. Technical Data

Functional Data

Sensitivity:

Ten sensitivities are user selectable.

Setting

Sensitivity

Setting

Sensitivity

.48% ΔL/L

.08% ΔL/L

.32% ΔL/L

.06% ΔL/L

.24% ΔL/L

.04% ΔL/L

.16% ΔL/L

.03% ΔL/L

.12% ΔL/L

.02% 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

B Pulse Output:

250ms ±15ms.

Response Time:

Response time is dependent on the sensitivity selected.

Setting

Response Time

Setting

Response Time

70ms ±10ms

140ms ±20ms

70ms ±10ms

140ms ±20ms

70ms ±10ms

140ms ±20ms

70ms ±10ms

140ms ±20ms

Vehicle Hold Time:

In Normal Presence Mode: Approximately 1 hour for a detection of 1% ΔL/L.

In Extended Presence Mode: Approximately 19 hours 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:

Three power versions:

10.5 volts to 30 volts AC or DC with over voltage protection
100 volts to 135 volts AC
200 volts to 270 volts AC

Output Relay Rating:

3 amps @ 125 volts

Summary of Contents for DSP-10

Page 1: ...DSP10_MAN_C 07 27 18 Page 1 of 26 Pros Who Know Trust Diablo User Manual DSP 10 Vehicle Detector ...

Page 2: ...hes 5 and 6 9 Sensitivity Boost DIP Switch 4 11 Extension DIP Switches 2 and 3 12 Delay DIP Switch 1 12 Indicators 12 5 Installation 16 General Rules and Best Practices for Inductive Loops 16 Detector Installation 17 Loop Installation 18 6 Configuration 22 Wiring 22 Internal Settings 22 7 Troubleshooting 23 No Power LED 23 Power LED Flashes On Once Every 2 Seconds 23 Power LED Flashes Slowly 1 Hz ...

Page 3: ...xtension 10 Figure 4 Outputs with Delay 10 Figure 5 Outputs with Extension 11 Figure 6 Outputs with Delay and Extension 11 Figure 7 Power LED States 14 Figure 8 Detect LED States 15 Figure 9 Loop Installation 20 Figure 10 Saw Cut for Home Run Exit and Chiseled Corner for Home Run Exit 20 Figure 11 Fail Safe and Fail Secure Internal Jumpers 22 ...

Page 4: ...e models The small package is powered by a high performance 16 bit microcontroller that does not skimp on performance The DSP 10 Detector was designed to retrofit into existing locations that may require a detector upgrade This allows maintenance personnel to carry only one detector to meet most if not all of their vehicle detection needs The detector uses an 11 pin relay socket for connections Fi...

Page 5: ...is dependent on the sensitivity selected Setting Response Time Setting Response Time 0 70ms 10ms 5 70ms 10ms 1 70ms 10ms 6 140ms 20ms 2 70ms 10ms 7 140ms 20ms 3 70ms 10ms 8 140ms 20ms 4 70ms 10ms 9 140ms 20ms Vehicle Hold Time In Normal Presence Mode Approximately 1 hour for a detection of 1 ΔL L In Extended Presence Mode Approximately 19 hours for a detection of 1 ΔL L Electrical Data Loop Induct...

Page 6: ... milliamps maximum 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 Position Any Housing Material Lexan Housing Size 2 36 inches High x 1 75 inches Wide x 4 06 inches Deep 59 94 mm High x 44 45 mm Wide x 103 12 mm Deep Figure 2 Physical Dimensions ...

Page 7: ...atively long time The retuning process takes about an hour to complete in the Normal Presence mode and about 19 hours in the Extended Presence mode with 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 the vehicle as expected Once the vehicle leaves the detector will recover from the retuning process within 1 se...

Page 8: ...rrect operation of the A output Sensitivity The detector has ten user selectable sensitivity levels In most situations the medium sensitivity 5 setting will work effectively For those situations where setting 5 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 on...

Page 9: ...mal conditions the DSP 10 will hold a vehicle presence for a reasonable amount of time If a vehicle parks over the loop and the detector measures a 1 ΔL L it will slowly tune that vehicle out over a period of about one hour For those instances where a longer period is desired extended presence will hold that same vehicle for about 19 or 20 hours This is quite a long time but it isn t infinite The ...

Page 10: ...l If the DSP 10 recognizes some type of loop failure a continuous output on the B output will be given The B output will remain activated until the failure is corrected The following figures show the effects of delay and extension on the A B outputs The numbers between edges are the number of seconds in that period Figure 3 Outputs with No Delay or Extension Figure 4 Outputs with Delay ...

Page 11: ...st often used to allow a detector to have a lower starting sensitivity and then increase it after a vehicle has been detected This is useful in situations where high bed tractor trailer vehicles will be passing over the loop With this feature the detector may be able to detect the high bed portion of the vehicle without having to be overly sensitive and susceptible to false detections NOTE If dete...

Page 12: ...equiring that the vehicle stay in the detection area for a full 2 seconds before activating the A output This is useful at sites where vehicles traveling perpendicular to the gate may travel across the detection zone 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 The delay interval i...

Page 13: ...l Memory feature is enabled the LED will display the Prior Fault indication Large Change Fault When the detector senses that a loop is experiencing a large inductance change greater than 30 the LED will turn off for 100 milliseconds then on for 100 milliseconds for 500 milliseconds then stay on for 500 milliseconds and repeat the sequence for the duration of the fault If the fault is corrected and...

Page 14: ...t in Fail secure 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 A output is not activated due to the 2 second delay feature...

Page 15: ...ue to 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 i...

Page 16: ... to reduce the loop wire bend angle to not exceed 45 degrees at any location 5 Use backer rod to hold the loop wire at the bottom of the saw cut before sealing the loop The backer rod should be cut into 1 inch pieces and one placed every foot or so as needed 6 If a loop installation will cross an expansion joint in the roadway surface some method of leaving some slack wire at the joint should be i...

Page 17: ...the source is overhead or below ground power lines the saw cut should be parallel to the short side of the loop The loop wire is placed in the saw cuts using a figure 8 motion A figure 8 loop will have more inductance that a similar sized conventional loop 14 If multiple loops are to be connected to the same detector there are several things to be aware of a Always connect multiple loops in series...

Page 18: ... 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 At greater than 10...

Page 19: ...lot causing loop failure The saw slot should be deep enough that the loop wire will have a minimum of of sealant over the top wire in the slot More is better Going too deep with the saw cut is also a concern Deep cuts in a road surface may impact the structural strength of the roadway especially if any reinforcement material is cut Using a smaller gauge of wire will allow for shallower saw cuts Th...

Page 20: ...DSP 10 User Manual Page 20 of 26 DSP10_MAN_C Figure 9 Loop Installation Figure 10 Saw Cut for Home Run Exit and Chiseled Corner for Home Run Exit BACKER ROD LOOP WIRE SAW DETAIL A DETAIL B ...

Page 21: ... backer rod should be sized such that it fits snugly in the saw slot Use a blunt object not a screwdriver to press the backer rod pieces down into the saw slot as far as they will go Keeping the loop wire at the bottom of the saw slot allows the loop sealant to provide the maximum amount of protection possible from foreign object penetration Never use a continuous piece of backer rod over the loop...

Page 22: ...hot 2 White DC Common or AC Neutral 3 Orange B N O closes for detect 4 Green Chassis Ground 5 Yellow Relay A common 6 Blue Relay A N O closes for detect 7 Gray Loop 8 Brown Loop 9 Red Relay B common 10 Pink or White Black Relay A N C opens for detect 11 Violet or White Red Relay B N C opens for detect Internal Settings There is only one setting internal to the detector and it is the fail safe or f...

Page 23: ...that the detector has an open loop a high resistance in the loop circuit or excessive inductance The first step is to confirm that the detector has a loop connected to it and the loop is connected to the correct pins see the wiring configuration for the pin out If a loop is connected to the correct pins of the detector disconnect the loop and using an ohmmeter check the resistance of the loop circ...

Page 24: ...lso have a low inductance value if sufficient turns were not added Contact technical support for help with very small loops If you do not have a meter capable of measuring resistance and inductance but do have another operating detector in the same box you can skip to this step Swap the loops between a working detector and a failing detector If the problem follows the loop the loop is the problem ...

Page 25: ...lines electric motors and insufficient twisting of the loop wires just to name a few Other loops in the area that are connected to a different detector are prone to cross talk when the magnetic fields from different loops interfere with each other Adjusting the loop frequency of one or both of the loops in the same area will usually allow you to find a setting that both loops will work reliably wi...

Page 26: ...tes then perhaps the sensitivity setting is too low There are many variables in determining overall sensitivity loop size number of turns loop lead in percent coverage etc In most cases a sensitivity setting of 5 is the correct setting However to compensate for some unusual loop geometries this setting may be inadequate Adjust the sensitivity one level higher and recheck the detector for proper de...

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