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Diablo control make a detectors of all styles. Some have become industry standards, and some have adopted industry standards.
All detectors use 100% of Diablo Controls experience and expertise.
Diablo's professional rack detectors are prominent in many states in USA. You can trust Diablo as millions of americans do.
PCB cards
OEM Cards
Traffic rack cards
DSP15 PCB detector
Specification
Loop inductance
20µH to 1500µH (incl lead-in inductance)
Operating Temp
-37°C to 74°C
Operating Voltage
10 to 30 volts AC or DC,
Operating Current
75mA max fail safe 40mA max fail secure>
Dimensions
74mm (D) x 104mm (W)
Relay contacts
Presence 3A @ 125VAC, Form C Pulse 3A @ 125VAC, Form A
DSF15 is a single loop card. Relay A is set for presence and relay B set for pulse.
This is a standard format 10 pin detector used in domestic applications since 1980's. There are various connector options. Suffix T is the versatile screw termnal version shown. Suffix M with a male header is also popular.
DSP15 pinout
Pin
Function
>
1
Relay A, com
2
Relay A, N/C
3
Relay A, N/O
4
Relay B, com
>
5
Relay B, N/O
6
not used
7
+ve power
8
-ve power
9
Loop
10
Loop
DSP15 functions
DSF15 is a single loop card. Noise filtering improves stability on noisy or troublesome sites. RelayA defaults to presence and relayB set for pulse.
This is a standard format 10 pin detector used in domestic applications since 1980's. Suffix T is the versatile screw termnal version shown. Suffix M option with a Molex male header is also popular.
DSP15 can replace most 10 pin 'Molex' detectors. Terminal order is always the same. There is even a standard colour code for the 10 pins.
The detector self calibrates to the ferrous footprint on power up. Loop failure detection has an optional memory feature to detect intermitant loops..
The volt free relay contacts and a loop transformer give good isolation from lightning discharges through the ground loop.
DSP15 is an old school solid detector with new ideas. It will be your last best choice.
DSP15 sensitivity
0
4800ppm
1
3200ppm
2
2400ppm
3
1600ppm
4
1200ppm
5
800ppm
6
600ppm
7
400ppm
8
300ppm
9
200ppm
Set on 10 way rotary switch
DSP15 DIP functions
DIP 1 & 2 sets to one of 4 frequency ranges. Exact frequency is set by the physical layout of the loop, so DIPs set the range.
DIP 3 When output B is set to 'failure', default is to switch relay B while a loop fault persists. Setting DIP to 'retain memory' leaves the relay ON until reset.
DIP 4 sets ambient creep. As conditions change a detector adjusts over time. Ambient ferrous objects will be nulled out over 30 mins with DIP4 OFF, or over several days with DIP 4 ON.
DIP 5&6 set relay B function. Options include a loop fail output (see DIP3). Pulse can be set when a vehicle arrives on the loop, or when it leaves the loop area.
DIP 7 sensitivity boost is a hysterisis function. While a vehicle is detected, sensitivity is increased. The theshold for un-detect is lower. It is used for lorries whose tractor has a high mass, but the trailer has a high bed.
DIP 8 & 9 is used to extend a presence detection. For example, it can prevent a barrier arm decending between a car and a trailer.
DIP 10 is a filter for brief activation of the loop. It must be activated for at least 2 secs before the relay switches, so excluding fast transit or spurrious activation.
OFF + OFF = High frequency
ON + OFF = Mid hi frequency
OFF + ON = Mid lo frequency
ON + ON = Low frequency
Failure memory
3
retain failure
Presence
4
vehicle ignored after days
vehicle ignored after 30 mins
Relay B function/td>
5 & 6
OFF + OFF = Presence
ON + OFF = Pulse on entry
OFF + ON = Pulse on exit
ON + ON = Loop failure
Sensitivity boost
7
Sensivity boost
no boost
Release delay
8 & 9
OFF + OFF = no delay
ON + OFF = 2sec delay
OFF + ON = 5sec delay
ON + ON = 10sec delay
Activate delay
10
2sec before activate
no delay
Indicators
GREEN is for power and loop diagnostics. LED is ON for normal operation. A blink indicates low voltage is too low. Flashing means the loop has open circuit or shart circuit fault.
RED is the detect LED for relayB.
DSP22s
The DSP22s is a dual channel card designed for old DoorKing openers. The channels have independant circuits. Four sensitivity levels can be set for each channel on the sens/reset button.
Each channel has power (green), and state (red) LEDs. In the case of a loop circuit failure, the green LED flashes slowly (2Hz) for an open circuit loop, or flash quickly (10Hz) for short circuit loop.
Channel 1 is a solid state presence output. Channel 2 has a form C relay, and can be set as pulse with fail secure, or presence with fail safe mode.
The loop range is 20uH to 2mH.
DSP22s pinout
Pin
Function
>
1
Loop 1
>
2
Loop 1
3
Loop 2
4
Loop 2
5
Chan2, N/O
6
Chan2, Com
7
Chan2, N/C
J1 board plug
Pin
Function
>
1
12-30Vdc +
2
Ground
3
Output
DSP22-2
The DSP22-2 is a dual channel card designed for DoorKing openers. Multiplexing channels improves noise tolerance, and allows placement of loops closer together than ever possible.
Sensitivity is set for each channel on a button. Each channel has power, and state LEDs, with loop fault diagnostics.
Channel 1 is a solid state presence output. Channel 2 has a form C relay, and can be set as for normal loop pulse or a mini-loop pulse.
The DSP-22-2 is fail-safe mode with fault memory to alerts user to past but recovered faults. There is a new flicker display on channel 2 in pulse mode. The LED is on during the pulse, reverts to flicker mode while the channel is still detecting the vehicle.
DSP22-2 pinout
Pin
Function
>
1
Loop 1
>
2
Loop 1
3
Loop 2
4
Loop 2
5
Chan2, Com
6
Chan2, N/O
7
Chan2, N/C
J1 board plug
Pin
Function
>
1
14-27Vdc
2
Ground
3
Output
Traffic cards
Diablo control is the preferred supplier of 19" rack mounted detectors to many US states, and other nations. These traffic control workhorses are seldom seen by the public, but keep the country flowing, sans bouchant.
Loop diagnostics
The red detect LED is ON when a vehicle is over the loop detection area. It only flashes briefly on VD909, but will remain on for VD906 and VD907
Green Power LED flashes once per second indicating the detector is powered and operating. The green LED is also for loop diagnostics. If the loop becomes disconnected the green LED flashes at 2 times per second. This LED will flash 10 times per second is the loop is shorted.
Most problems are loop faults. Inspect the ground around the loop for surface break up. To check for open circuit loops, un-plug the connector, then check resistance with a digital test meter. Resistance should be less than 100 ohms.
A temorary loop can be made with 15m of single core cable laid on top of the road surface. It will be sensitive to small movements but stable enough to test the detector module. If this solves the problem you may need to replace the loop.
Loop installation is a well established road technique. We have published articles on this website. There are links below.
