Operating instructions V2.2
Rev. 06/2024
For reasons of readability, the masculine form has been chosen in the text, the information refers to all genders.
List of abbreviations
| BMA | BERNARD Mobility Analyser |
|---|---|
BMC | BERNARD Mobility Controller |
TLS | Traffic light system |
OUT | Output-side switched contacts |
PLC | Power line communication |
Fundamentals
The BMC links the BERNARD Mobility Analyser (BMA) and a traffic light system (TLS). The BMA, an intelligent optical system for the identification of objects, can initiate vehicle-actuated switching recommendations, such as request, dimensioning and registration. This information is transmitted to the BMC and countermeasures are taken. This information is transmitted to the BMC and countermeasures (relieving the traffic light system) can be initiated.
Please be sure to observe the safety instructions for protection against electric shock and the risk of injury. Read the operating instructions carefully before starting work
These operating instructions must be kept in the vicinity of the BMC to ensure that it is used in accordance with the applicable safety regulations at all times;
The operating instructions must be kept in a safe place! If the BMC is passed on to a third parties, they must be passed on with it.
Use the BMC only for its intended purpose.
Before commissioning, ensure that the mains voltage corresponds to the specified mains voltage.
No voltage must be applied to the device during installation.
Installation must be carried out by qualified personnel and must comply with all local regulations.
The BMC can be damaged by even a slight shock. Ensure careful handling, storage and transportation.
All information and instructions in these operating instructions have been compiled taking into account the applicable standards and regulations, the state of the art and many years of knowledge and experience.
The manufacturer accepts no liability for damage in the following cases:
Non-compliance with these instructions
Use other than the intended use
Use by insufficiently qualified personnel
Unauthorized modifications
Technical modifications
Use of unauthorized spare parts
The actual scope of delivery may deviate from the explanations and illustrations described here in the case of special versions, the use of additional ordering options or due to the latest technical changes. The obligations agreed in the contract documents, the general terms and conditions as well as the manufacturer's terms of delivery and the statutory regulations valid at the time of conclusion of the contract shall apply.
In addition to the safety instructions in these operating instructions, the safety, accident prevention and environmental protection regulations applicable to the area of use must be observed. The following applies in particular:
The operator must inform himself about the applicable health and safety regulations
The operator must clearly regulate and define the responsibilities for installation, operation, troubleshooting, maintenance and cleaning;
The operator must ensure that all persons handling the BMC have read and understood these instructions. In addition, he must train the personnel at regular intervals and inform them about the dangers
The operator is responsible for ensuring that the BMC is always in perfect technical condition.
The following therefore applies:
The operator must ensure that the maintenance intervals described in this manual are adhered to
The operator must instruct the personnel regularly. An instruction log must be created for better follow-up.
General safety instructions
Safety instructions are identified by symbols in these operating instructions. The individual instructions are introduced by signal words that express the level of hazard.
The instructions must be followed to avoid accidents, personal injury and damage to property.
Explanation of symbols
**Danger! Indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.
**Warning! Indicates an imminently hazardous situation that must be avoided.
**Caution! Indicates a potentially hazardous situation which, if not avoided, may result in damage to property and the environment.
**Hint! Highlights useful tips and recommendations.
Personnel qualification
Work on the BMC may only be carried out by a qualified electrician or by instructed persons under the direction and supervision of a qualified electrician in accordance with the electrotechnical regulations.
| Life phase | Qualification |
|---|---|
Mounting | Basic technical training of instructed personnel |
Commissioning | Specialized electrical engineering training |
Maintenance | Basic technical training of instructed personnel |
Commissioning | Specialized electrical engineering training |
Disassembly | Basic technical training Instructed personnel |
Intended use
**Caution! Unforeseeable risks of hazards may arise if the device is not used as intended, i.e. that is not described under intended use or that goes beyond the intended use.
The BMC is intended exclusively for controlling traffic light systems (individually depending on object classes, environmentally sensitive control, public transport priority) and for pedestrian flow detection (movement flows, counting, warning if limit values are exceeded). The BMC is designed for public use outdoors or in enclosed spaces.
The BMC may only be used in accordance with the specifications in the operating instructions. All instructions, safety regulations and compliance with the prescribed operating, maintenance and servicing conditions must be observed. No modifications, attachments or conversions may be made to the BMC without the manufacturer's approval.
For damage resulting from improper use
the operator bears sole responsibility.
The manufacturer accepts no liability whatsoever.
Schematic structure TLS- BMC - BMA
The following shows the schematic structure of an intelligent traffic light system (TLS) in conjunction with the BERNARD system. This system, consisting of power supply, BMC and BMA, is regarded as a single unit and as such fulfills the legal requirements. Up to four BMAs can be connected to one BMC. The BMAs communicate with the BMC via power line communication. The connection between the control unit of the TLS and the BMC is made via up to twelve potential-free optocoupler switching contacts, so that the BERNARD system is electrically isolated from the TLS and no electrical interference is to be expected.
Description of the BMC
Device dimensions
Block diagram
Terminal connections
Power supply
The following power supply is used to supply the BMC with power: Meanwell MDR-100-24 (https://www.meanwell.com/Upload/PDF/MDR-100/MDR-100-SPEC.PDF). The power supply is supplied with the BMC. Only the use of this power supply is recommended. With a cable length > 5 m, the DC voltage must be set to 30 V using "+V Adj" to compensate for a possible voltage drop on the connecting cable between the BMC and BMA. A cable cross-section greater than 0.75 mm² is recommended for the connecting cable between the BMC and BMA.
Transportation, packaging disposal and storage
**Caution! Damage due to incorrect transportation! Incorrect transportation can cause considerable material damage
Only open and completely remove the packaging at the actual installation site.
Transportation
The BMC is packed by the manufacturer for transportation. The delivery should be checked for completeness and transport damage immediately upon receipt so that remedial action can be taken quickly if necessary.
Disposal of the packaging: Separate the packaging materials accordingly and take them to the appropriate collection points for recycling and environmental protection.
Storage
If possible, the device must be stored in a dry and dust-free place. Avoid direct UV radiation.
Installation
The installation of the BMC in combination with one or more BMAs is described below.
**Caution! Incorrect handling or inattention can lead to injuries or crushing. Installation only by a suitably trained specialist or demonstrably instructed personnel. Local safety, accident prevention and environmental protection regulations must be observed during installation.
Note! Ensure that connected cables have been connected correctly. Cables must be firmly clamped in the connection blocks. It is therefore recommended to check each cable clamp before commissioning.
De-energize the system
Snap the Power Supply onto the DIN rail. For a cable length > 5 m: Set the DC voltage to 30 V using "+V Adj".
disconnect all connection blocks from the BMC
open the BMC baselatch (orange) as shown in the illustration. Place the BMC on the DIN rail and close the baselatch again. The BMC should now be firmly seated on the DIN rail.
Establish the 24V DC connection between the power supply and the BMC connection block (see wiring diagram). Check the connections and plug the connection block into the BMC. 6.
Connect the cables to the BMA with the BMA connection block (see wiring diagram). The polarity is not relevant. Check the connections and plug the connection block into the BMC.
Connect the cables to the control unit with the connection block of the potential-free contacts (see wiring diagram). Connect as shown in the wiring diagram the common ground of the control unit to one of the two outputs of the potential-free contacts as shown in the connection diagram. Check the connections and plug the connection block into the BMC. 8. 8 [Establish a 230V AC mains connection to the power supply: Connect the protective earth conductor (PE), the neutral conductor (N) and the phase conductor (L) to the power supply as shown in the wiring diagram].(#user-content-fn-1)
Commissioning
**Danger! Danger due to electric current! Failure to observe the safety instructions may result in injury or death!
**Warning! Commissioning may only be carried out by appropriately trained specialist personnel. (see also chapter Personnel qualification).
Switch on the system.
The power LED on the power supply should light up
The power LED on the BMC should light up yellow for 5 seconds and then change to green. The connected BMAs are now supplied with power via the BMC.
As soon as the BMA has started up (this can take a few minutes), the BMA can be configured via the Bernard Control Center and a corresponding potential-free contact can be assigned to the region of interest zones. See #konfiguration-des-bmcs-im-bernard-control-center
If a zone is configured, the corresponding BMC switch LED should light up when the zone is assigned.
For further steps on operating the BERNARD Control Center, please refer to the "BERNARD Control Center" operating instructions.
LED display
The RGB LEDs of the BMC show the following functions:
Power LED:
Off: BMC switched off. Yellow: BMC starts (5 seconds). Green: BMC in operation.
Sensor LEDs:
Flashing green: Heartbeat received from corresponding BMA (4 second interval).
White: BMA watchdog active.
Switch LEDs:
Off: Contact open. ** Green: Contact closed.
Configuration of the BMC in the BERNARD Control Center
The system is configured via the BERNARD Control Center
Select the corresponding BMA in the Control Center. As shown in the illustration, check the box for "IO-device" under "Event Connection - Configuration mode".
Below the MQTT configuration, an "IO device" field appears in which the BMC can be selected under "Family".
Then save the changes using the "Save" button at the bottom of the page. As soon as the changes have been saved, the zones can be assigned to the contacts under "Configure Model & Event Triggers" (bottom left in the camera image).
First add the desired "Region of Interest" zones under "Traffic Events"
Once the zones have been configured, save your changes using "Save changes". The configuration could then look like this, for example:
To configure the corresponding potential-free contacts, click on "New Rule" under "Custom Rules" and configure the corresponding rules for when the contact should be switched, as shown in the following graphic, for example:
In this configuration, the potential-free contact 5 of the BMC would be closed as long as an object (vehicle/person) is located in the "roizone05" zone. More complex conditions can also be configured, e.g. that the contact should only be switched for certain vehicle classes in order to prioritize a bus, for example. Save the rule using the "Save" button. Add the rules for other zones. In the overview of event triggers, a "Rule" marker should then be added in red under "Type" (see illustration below).
As shown in the following image, the value must also be set to zero under "Global Settings" - "RoI time interval (seconds)".
Note! If the "RoI time interval" is set to 0, no ROI zones should be configured without a corresponding rule, as otherwise the corresponding ROI is evaluated every millisecond and consequently generates a large number of MQTT events.
Finally save the changes with "Save Changes" -> "Save & Deploy". In this way, the configuration changes are synchronized to the device. It may then take some time (up to 1 minute) until the changes are active on the device. Now, the contacts are switched according to the configured rules.
Maintenance
In the interest of constant operational readiness, a visual inspection of the BMC and the BMA and cleaning of the acrylic dome of the BMA should be carried out at least once a year by a suitably trained specialist or demonstrably instructed personnel. (see #personalqualifikation) be carried out. Software updates are carried out by the manufacturer with the customer's consent.
Cleaning
**Caution! The use of rough cleaning cloths can damage the acrylic element and thus impair its function.
Only clean dust and grease on the acrylic with a soft cloth and a little cleaning alcohol. If the device has been stored for a long time, you can use a dry cloth to remove the dust residue on the housing.
Malfunctions
If the system malfunctions, the following points should be checked one after the other.
| Fault | Possible cause | Remedy |
|---|---|---|
**Power supply LED does not light up ** | Defective or interrupted supply line. | Check the electrical supply line. |
Power supply is defective. | Replace the power supply. Contact the support team. | |
BMC power LED does not light up | Defective or interrupted supply line. | Check the electrical supply line. |
BMC is defective. | Please contact support for this. | |
**Sensor LED of the connected BMA does not flash green every 4 seconds (no heartbeat is received from the BMA) ** | Defective or interrupted supply line to the BMA. Check the electrical supply line. If the BMA itself is in operation ("Online" connection in the Control Center), the supply line is not the problem. | |
The supply cable to the BMA is too long. | The voltage drop on the supply cable is too great, so that the BMA is not reliably supplied with power. Use a shorter supply cable or a cable with a larger cross-section. | |
BMA is still in the start-up process or is performing an update. | Check again after 10 minutes. | |
BMA not correctly configured. | ||
Communication between BMA and BMC is disrupted, e.g. by electromagnetic interference from parallel lines. | Contact the support team. Use of shielded twisted pair cables. | |
Status LED of the potential-free contact does not light up although the vehicle is in the zone. | BMA not correctly configured. | |
Status LED of the potential-free contact lights up, but control unit does not register switching operation | Defective or interrupted cable. Incorrect assignment in the control unit. | Check the electrical cable. Check the assignment in the control unit. |
Decommissioning, dismounting and disposal
**Danger! Electrical current: Ensure that the power supply is switched off or disconnected. Failure to do so may result in serious injury or death.
**Warning! Decommissioning only by authorized and competent persons.
**Warning! Incorrect handling or inattention can lead to injuries or crushing.
To decommission the BMC, disconnect the system from the power supply. Remove all terminal plugs from the BMC. Open the base latch and dismount the BMC. The cables can then be removed from the terminal plugs.
At the end of its service life, the BMC must be disposed of properly. The local disposal regulations apply to the disposal of all device parts and packaging materials.
Do not dispose of the BMC in the residual waste. In accordance with European Directive 2002/96/EC on waste electrical and electronic equipment and its transposition into national law, used electrical and electronic equipment must be collected separately and recycled in an environmentally friendly manner.
Regulations
DSGVO
No personal data is read or processed in the BMC. This means that the use of the BMC is harmless under data protection law.
Safety
The BMC complies with the Electromagnetic Compatibility Directive 2014/30/EU. This results in the CE certification affixed to the underside of the device.
Environmental management
The BERNARD Gruppe is committed to producing its products in a sustainable and environmentally friendly manner. The BMC complies with the RoHS Directive 2011/65/EU.
Modification
It is not permitted to modify the BMC in any way. Any modifications will invalidate the manufacturer's service and liability with immediate effect.
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