EV Charge Web Docs | Tridens Technology – Operations

Docs: Chargers

Mon, 01 Jan 0001 00:00:00 +0000

To access this section in EV Charge, from the Menu, select Operations, and click Chargers. A paginated list of all chargers is shown in a tabular format.

To generate the chargers list in a spreadsheet, click CSV. To print, click Print, and to copy, click Copy.

Note:

They are generated, printed, and copied per paginated page.

Information:

You can filter for a charger by name, serial number, model, vendor, operational status, or/and charging status.

To see the list of connectors found in a charger, click Expand.

Both chargers and connectors can be turned on/off. To achieve this, click Request availability change. Turning off a connector will send a request to the charger via OCPP to make that part inoperative.

Turning a charger/connector on/off is the same as making it available or unavailable to end users. Unavailable chargers in the EV Charge - Mobile App cannot be used to start a session.

Change availability is the operation (based on OCPP) which provides an operator to manage the availability of the connected charging device from the Tridens EV Charge’s central system. Operation offers to request the connected charging device to change the availability of the charger or specific connector from Unavailable to Available and vice-versa.

Note:

Please note that this feature can not be used if the charging device is not connected with the central system, as in that case the central system does not have any control over the charging device.

Tip:

Turning a charger/connector on/off can be helpful during maintenance.

Furthermore, a connector can be locked/unlocked by clicking .

Some EV chargers lock the connector to prevent it from being removed during charging for safety purposes. The lock/unlock action manually triggers that process. It is typically used for debugging or resolution if the charger does not release the connector due to a malfunction.

Docs: Stations

Mon, 01 Jan 0001 00:00:00 +0000

To access this section in EV Charge, from the Menu, select Operations, and click Stations. A paginated list of all charging stations is shown in a tabular format.

To generate the stations’ list in a spreadsheet, click CSV. To print, click Print, and to copy, click Copy.

Note:

They are generated, printed, and copied per paginated page.

Information:

You can filter for a charging station by name, serial number, model, vendor, or/and operational status.

OCPP-related operations on the charging station include the following:

Reboot
Firmware upgrade
Diagnostic logs
Trigger message

Reboot

The charging station in EV Charge is the network component. To send a reboot request to the charging station, click Reboot.

Firmware upgrade

To request a firmware upgrade on the charging station, click Firmware update. Provide a location (in URL form)—typically, this is an FTP location or an HTTP address from where the file can be downloaded.

Information:

The format of the FTP URL is: ftp://user:password@host:port/path where user:password@, :password, or :port can be omitted.

The format of the HTTP address is: http://hostname:port/path where :port can be omitted.

The Retrieve at indicates when the charging station will download the file, and the Install at means when the update (in the form of a file) will be installed on the charging station.

Retries and Retry interval represent how many times and at what interval, respectively, the charging station will re-download the file in case the download fails on the first attempt.

Clicking Request schedules the firmware upgrade on the charging station.

Diagnostic logs

To request diagnostic logs for the charging station, click Diagnostic request. Provide the periods from which to retrieve the diagnostic logs by configuring the start and stop times.

Additionally, provide a URL where the logs will be uploaded because OCPP does not work with direct file transfer. You will need an SFTP/FTP server where the file will be pushed or an HTTP address.

Tip:

Download and install an SFTP/FTP client/software, for example, FileZilla . Run it as a server on your computer, and provide the URL to EV Charge to download the file to the server.

Retries and Retry interval represent how many times and at what intervals the charging station retries to upload the diagnostic logs to the URL if it fails on the first attempt.

By clicking Request, the charging station will collect its internal logs and send them to the link configured in the URL.

Trigger message

Trigger message is used to trigger specific OCPP actions on the charger, mainly for the purpose of debugging or testing. To trigger a message, click Trigger message, and select the type of trigger message, which could be:

Boot notification
Diagnostics status notification
Firmware status notification
Heartbeat
Meter values
Status notification

Docs: Authorization

Mon, 01 Jan 0001 00:00:00 +0000

Name	Description
Local offline authorization	Controls whether the charger will authorize the user when they are offline by using the authorization cache and/or local authorization list.
Local pre-authorize	Controls whether the charger will use authorization cache and/or local authorization list to start a session without waiting for an authorization response from the central system. The central system can later deauthorize the user at session event exchange.
Local auth list enabled	Indicates whether the local authorization list is enabled on the charging station.
Set local list max. length	Charging station’s maximum number of identifiers that can be sent in a single request to update the authorization list.
Local auth list	Maximum number of identifiers that can be stored in the local authorization list of the charging station.
Allow offline session of unknown id	Indicates whether the station supports the unknown-offline-authorization feature.
Authorization cache enabled	Indicates whether the authorization cache is enabled on the charging station.
Authorize remote start	Indicates whether additional authorization at remote session start request is enabled on the charger. If enabled, the charger issues authorization when it receives the remote start request from mobile/web.

Docs: Local Authorization Management

Mon, 01 Jan 0001 00:00:00 +0000

Local authorization feature provides that the charger can authorize customers/drivers without using the central system, while being offline.

The central system of Tridens EV Charge instructs the charger about the list of authorization identifiers which can be used locally by the charger to authorize the drivers for charging. Each list has a version for the operational reference. Operation can be used as full override (overrides all identifiers) or differential (add/update the specific identifiers). The system can also request a charger for the version number of the local authorization list. This way an operator/provider can find out which authorization list is currently being set up on the charger.

To manage the charging station’s local authorization list, the following operations are available from the perspective of the central system of Tridens EV Charge:

Send local authorization list (full update).
Send local authorization list (differential - partial update).
Get local authorization list version.
Handling the charging station’s configuration settings for local authorization.

Local authorization and authorization cache are separate features and cache does not impact the local authorization list.

Docs: Authorization Cache

Mon, 01 Jan 0001 00:00:00 +0000

Operators/providers may utilize the charger’s ability for the authorization cache. Authorization cache autonomously maintains a record of previously presented identifiers (RFID, NFC, certificate, …) that have been successfully authorized by the central system of Tridens EV Charge. This charger’s feature is controllable from the Tridens central system side by using the configuration keys, as described in Stations - Live Configuration Parameters.

This feature needs to be used carefully and might only be proper in the following cases:

For the businesses, where the charging service is available only for post-paid customers, as sessions regulated by the local authorization cache are not authorizing any customer/driver resources, to verify whether customer has enough funds.
Charging station is located in area with non-stable network connection.

Authorization cache impacts:

Cache entries may contain expiry dates, which are considered at validation.
If authorization happens and an invalid identifier is present in the cache while the charger is online, the charger uses the central system to authorize.
Authorization cache has no impact on the local authorization list! These two features are separated and local authorization lists are fully controllable from the central system. Also, identifiers from local authorization list should not be added to the authorization cache. If both are used, the local authorization list has priority over the authorization cache for the same identifiers.

Local authorization and authorization cache are separate features and cache does not impact the local authorization list.