BARRIER LOGIC WITH
VEHICLE LOOP DETECTOR

The BL100B combines the features of a loop detector and barrier logic into a single unit. The unit has been developed to control barriers using torque motors with ease of installation and without the need for a separate loop detector.

Standard features of the logic on the unit are :

The Memory input feature will allow opening inputs to be memorized. This will then enable a number of vehicles to pass over the closing loop before the barrier lower output is enabled. The purpose of this feature is to enable vehicles to pass the barrier without opening and closing for each vehicle and hence allowing rapid entry or exit of vehicles.

This mode allows the barrier to be manually operated for maintenance purposes.

This output is used to control the motor which raises or lowers the barrier.

This output is used to prevent tickets from being issued when the barrier is in the raised position.

On some occasions a vehicle may raise the barrier and then reverse out. In this situation the logic will time-out (switch selectable) and automatically lower the barrier.

After a vehicle has passed the closing loop and the barrier is closing, it is possible for the vehicle to roll backwards under the closing barrier. In this situation the logic will raise the barrier again until the vehicle moves forward off the closing loop.

The loop detector is connected internally to the logic and is used to close the barrier when the vehicle has passed over the loop.

Another loop detector may be used to prevent the barrier from being raised when there is no vehicle present. This is done by placing this loop in front of the barrier and a vehicle must be present on this loop to allow opening of the barrier.

Another loop detector may be placed after the barrier and used to raise the barrier as a free exit option. This feature is normally used in a bi-directional lane.

Standard features of the loop detector are :

Four sensitivity settings are available on the switches.

Two frequency settings are available to prevent cross-talk between adjacent loops.

This feature automatically boosts the sensitivity to a maximum on detection of a vehicle and is used to prevent loss of detection of high-bed vehicles.

TECHNICAL DATA

1. POWER REQUIREMENT: 200 - 260VAC 50/60Hz.
2. NMI/MI INPUT: This input may be activated by a potential free relay contact or open collector NPN transistor output. This input is isolated from the logic.
3. REMOTE LOWER INPUT: This input may be activated by a potential free relay contact or open collector NPN transistor output. This input is isolated from the logic and is used to keep the barrier permanently closed.
4. REMOTE RAISE INPUT: This input may be activated by a potential free relay contact or open collector NPN transistor output. This input is isolated from the logic and is used to keep the barrier permanently open.
5. RAISE/LOWER OUTPUT: This output is a normally open relay contact rated at 0.5A/220VAC.
6. TVI OUTPUT: This output is a normally closed relay contact rated at 0.5A/220VAC.
7. INDICATORS: LED indicators show power, barrier raised and state of loop detector.
8. DETECTOR TUNING RANGE: 15 - 1500 uH.
9. SENSITIVITY:

10. FREQUENCY: Two step adjustable.
11. PROTECTION: Loop isolation transformer, tranzorb and MOV protection on loop input.
12. CONNECTOR: 11 Pin Connector on rear of unit.
13. DIMENSIONS: 75mm (HIGH) X 40mm (WIDE) X 75mm (DEEP)
14. OPERATING TEMPERATURE:-40°C to +80°C
15. STORAGE TEMPERATURE:-40°C to +85°C
16. HUMIDITY: up to 95% non condensing
17. Complies with EMC Directive 89/336/EEC and Low Voltage Equipment Directive 73/23/EEC.

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