DIABLO DSP-19 Low Power Loop and Free-exit probe Vehicle Detector Instruction Manual

: June 4, 2024
: Diablo

Table of Contents

DIABLO DSP-19 Low Power Loop and Free-exit probe Vehicle Detector
Low Power Loop and Free-exit probe Vehicle Detector
Features
SPECIFICATIONS
SELECTABLE FEATURES
INDICATORS
CONNECTOR PINS
ORDERING INFORMATION
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DIABLO DSP-19 Low Power Loop and Free-exit probe Vehicle Detector

DIABLO-DSP-19-Low-Power-Loop-and-Free-exit-probe-Vehicle-Detector-
PRODUCT

Low Power Loop and Free-exit probe Vehicle Detector

The DSP-19 is specifically designed to be installed into a LiftMaster® model CSW24 operator or other models that use the same plug-in loop detector. The very low current draw and low voltage range are ideal for solar applications. The DSP-19 can be connected to a standard inductive loop or one of Diablo Control’s free-exit probes. The Diablo Controls free-exit probe is a small “pipe-shaped” device approximately 4-1/2” by 1” and is designed to be buried in the ground to detect vehicles. If the free-exit probe feature is turned on, the detector cannot be used as a safety detector as there is no presence detection in this mode of operation. Contact Diablo Controls for more information on the free-exit probe. The DSP-19 can be used as either a safety loop or free exit loop detector. It also has the flexibility to be either “fail-safe” or “fail-secure”. The DSP-19 has a single solid-state open-drain FET output capable of sinking more than 250 milliamps. The DSP-19 has 10 selectable sensitivity settings and uses a 6-position DIP switch to configure the detector. This includes the Diablo Controls free-exit probe selection as well as sensitivity boost, extended presence, and fail-safe/fail-secure operation. This makes the DSP-19 very flexible and versatile for those installations that need a little more than a standard detector.

Switch	Function
1	OFF
2	OFF
3	OFF
4	OFF
5	OFF
6	OFF

Features

Extremely low power. Less than 1ma of a current draw in the non-detect state.

Can be connected to a standard inductive loop as well as Diablo Controls free-exit probes.
Single Solid State Open-Drain output that can sink over 250 milliamps.
Front switch selectable Fail-safe or Fail-secure operation.
Wide operating voltage range with the extended low-voltage operation.
Sensitivity Boost for applications detecting semi-trucks.
Extended Presence is able to hold most calls for more than 12 hours.

SPECIFICATIONS

Loop Inductance: 20 µH to 1500 µH (including lead-in)

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

Operating Voltage: 8 volts to 35 volts DC

Operating Current: Sensitivities 0-6: Without call is 1.00 ma maximum

With a call is 26.00 ma maximum

Sensitivities 7-9: Without call is 1.60 ma maximum

With a call is 26.00 ma maximum

Output Ratings: Open-Drain Solid State Output: 250 milliamps @ 30 volts

Enclosure: Impact-resistant plastic

2.362” (H) x 0.866” (W) x 2.008” (D)

60.0 mm (H) x 22.0 mm (W) x 51.0 mm(D)

SELECTABLE FEATURES

Sensitivity Switch: This detector has a 10-position rotary sensitivity switch. The unit is shipped in the 5 position which is the normal sensitivity level. Sensitivity can be adjusted up or down from this level to accommodate different loop sizes or free-exit probes.

Setting| 0| 1| 2| 3| 4| 5| 6| 7| 8| 9
---|---|---|---|---|---|---|---|---|---|---
%ΔL/L| 0.48| 0.32| 0.24| 0.16| 0.12| 0.08| 0.06| 0.04| 0.03| 0.02
Response Time| 160 ms ± 130 ms| 200 ms ± 140 ms

Frequency: Frequency can be selected using switches 1 and 2.

1	2	Function
OFF	OFF	Highest loop frequency
ON	OFF	Medium highest loop frequency
OFF	ON	Medium lowest loop frequency
ON	ON	Lowest loop frequency

Loop Type: Set DIP switch 3 to off to operate with a normal inductive loop. Set the switch on to operate with a Diablo Controls free-exit probe. The free-exit probe mode will always be an entry pulse. As such, it is perfect for free exit operation. Never use the free-exit probe as a safety loop.

3	Function
OFF	Normal inductive loop
ON	Diablo Controls free-exit probe

Extended Presence Time: Set DIP switch 4 to off to hold a vehicle’s presence for about 30 minutes before tuning it out. Set the switch on to hold it significantly longer, perhaps up to a few days.

4	Function
OFF	Normal detection holds time
ON	Extended detection hold time

Sensitivity Boost: Set DIP switch 5 to off to operate with normal sensitivity. Set DIP switch 5 to on to automatically boost sensitivity during a call to improve detection of high-bed vehicles and truck/trailer combinations. A sensitivity boost is not applicable to most situations.

5	Function
OFF	The detector uses normal sensitivity
ON	Detector increases sensitivity once detection has occurred

Failure Operation: In fail-safe, the detector will output a detection when the loop circuit is failed. In fail-secure, the detector will not output a detect when the loop circuit is failed. Set DIP switch 6 to off to operate in fail-safe mode. Set the switch to on to operate in fail-secure mode. Note: Never use a fail-secure detector for a safety loop.

6	Function
OFF	Output A operates in the Fail-Safe mode
ON	Output A operates in the Fail-Secure mode

INDICATORS

Green Power LED: The LED will be on a blip once every two seconds to indicate the detector is powered and operating normally in the low power mode. The LED will be solid when there is possible activity over the loop. If the LED is not in one of these two modes, it is indicating a current or prior fault.

Fault	Display for Current	Display for Prior
Low Voltage	2 Hz with 50% duty cycle	NONE
Open Loop	1 flash ON every 2sec	1 flash OFF every 2sec
Shorted Loop	2 flashes ON every 2 sec	2 flashes OFF every 2 sec
Large Change	3 flashes ON every 2 sec	3 flashes OFF every 2 sec