wallbox Pulsar Plus EV Chargeer With Cable 7.4 kw Type 2 Installation Guide
- June 6, 2024
- wallbox
Table of Contents
wallbox Pulsar Plus EV Chargeer With Cable 7.4 kw Type 2
GETTING STARTED
Power Sharing Overview
Power
Sharing
allows you to connect two or more Wallbox chargers (up to 25 total) on a common electrical circuit and dynamically balance the power available to each charger. As vehicles are connected to or disconnected from chargers in a Power Sharing system, or as vehicle batteries complete their charging cycles, the system will automatically adjust the power available to each charger (and vehicle) as the power supply and demand changes.
The Power Sharing
system ensures that the total power used at peak demand does not exceed the
rating of the connected circuit, while simultaneously ensuring the maximum
available power (at least 6Amps, up to the maximum set rating of each charger)
is available to each connected vehicle. If connected chargers are already
utilizing the maximum available power and additional vehicles are then
connected to chargers in the system, those vehicles will be automatically
queued for charging as soon as the minimum amount of power is available to
begin charging.
Installation and configuration of a Power Sharing system requires additional steps and materials as described in this document. As this process involves high-voltage equipment, we advise you to engage a qualified electrician to conduct and complete this set-up.
Key Features:
- Compatible with all EVs.
- No additional equipment required (only communication cabling and conduit).
- No Internet connection required.
- Default minimum power delivery, even if a charger loses connection to the shared network.
- No subscription fees or recurring costs.
Technical notes:
- Communication protocol: CAN Bus.
- Compliant with NFPA 70 NEC Article 625.
- Maximum number of chargers: 25.
Required Tools and Materials
Devices
Tools (Power Sharing Set-up)
Tools (New communication conduit)
INSTALLATION
Preparing the chargers
Before proceeding with Power Sharing set-up, you should install the chargers according to the instructions as as included in the charger’s Installation Guide. Note that depending on the type of charger installation (hardwired or via NEMA plug), you will have additional instructions as described below:
For NEMA
plug-in installations, you typically will not have to open the charger;
however, to set-up plug-in chargers for Power Sharing, you will need to open
each connected charger in order to perform some of the steps in this set-up.
The instructions for opening the charger are listed under the “Hardwired
Installation” section of the charger Installation Guide.
After you have mounted your charger according to the instructions in the Installation Guide, ensure that:
- The charger cover is not attached to the charger (disconnect the communications cable from the cover).
- The chargers are electrically wired (connected to a circuit).
- Any connected circuits are NOT powered on during installation).
To make handling of the chargers, cables, and connectors easier during the Power Sharing set-up, you may want to install the holsters before proceeding. See “Installing the Holster” section in the charger Installation Guide.
Power Sharing Cabling
Connecting your chargers for Power Sharing requires installation of
communication cabling. This cabling may be drawn through either of the
following pathways:
Hardwired model
Use the power supply conduit (same conduit used for the hardwired electrical
wiring). Recommended.
Plug-in model
Use the small opening located at the bottom of the charger between the power
input and the EV connector cable output.
(This may also be used for hardwired installations.) When using this opening
for the communications cabling, first remove the screw plug. Use a wrench to
hold the interior lock nut while unscrewing the plug using a flathead
screwdriver from the bottom (exterior) side of the plug.
Wiring
For Power Sharing, the chargers communicate through a daisy chain cabling system. When connecting three or more chargers, the first and last chargers of the chain will be Terminating (T) chargers and the chargers in between will be Non-terminating (NT) chargers as shown in the image below. (Note: when connecting only two chargers, both will be Terminating.)
Installation
Draw the communication cables between the chargers through the selected
conduit (see Preparing the Chargers section above) as shown below. Ensure that
the total length of the cable is no more than 820 feet (~250m)
The cabling consists of a pair of a CAN-low (CAN-L) and a CAN-high (CAN-H)
line.
We recommend to use the following cable-type: Ethernet Class 5E no shield, 1
pair. 
Adding
chargers in the future
If you anticipate adding chargers to the system in the future, there are two
ways you can prepare the system now to make it ready for Power Sharing.
Option 1: Place a bus disconnecter to accommodate future chargers as
shown in the option 1 wiring scheme below. This option avoids the need of
reopening the existing chargers and hence it is the recommended option.
Option 2: Truncate the existing bus to add new charger(s) as shown in the
option 2 wiring scheme below.
- Open the charger following the installation guide of your Pulsar Plus, Copper SB, or Commander 2 charger.
- Set the terminating resistance into NT, make the communication wiring as explained above and then close the charger.
Important: New chargers may be placed anywhere physically in relation to the existing chargers as long as you follow these rules:
- You maintain the logic of the daisy chain.
- You respect the cabling polarity as described above under “Installation”.
Wherever a future added charger is placed, the most important rule to follow is the logic of the daisy chain. For example, in the image below, the new charger is placed before the Terminating charger on the right side of the daisy chain.
Configuration
Every Power Sharing system consists of on Primary charger and 1-24 Secondary
chargers.
The Primary charger is the central control unit of the entire system and it is
the only unit in the system that requires unique configuration.
The Primary charger can be set as a Terminating (T) or Non-terminating (NT)
position. The key configuration for the Primary charger is the Current
Selector switch as shown below.
The termination configuration (T or NT) is set by a switch inside the charger
(see figure below). If you anticipate adding chargers to the system in the
future, we suggest configuring two chargers as Terminating (T) and the other
chargers as Non-terminating (NT).
For Power Sharing installations, the maximum current has to be adjusted
through the myWallbox app and not through the current selector.
For more information on current adjustment through the app, please visit:
https://support.wallbox.com/na/knowledge-base/adjust-the-charging-current/
To ensure a
proper set-up, the measured resistance between CAN-H and CAN-L must be near to
60 Ohms. If it differs from that, recheck the proper wiring and the T/NT
configuration.
Finishing the Electrical Set-up
Once you have configured the chargers (set Primary/Secondary status and T or
NT setting) and correctly connected each to the electrical system (circuit),
you may proceed to close the chargers as described in the charger Installation
Guide (see “Closing the Charger”). Before closing your chargers, be sure to
note your Primary charger as you will need to connect to this charger via the
myWallbox app to complete its configuration.
Terminal/No Terminal 
SETTING UP
Configuring the Primary Charger
Once the system has been powered on, it has to be configured on the Primary
charger (the single unit that has been configured on its rotary switch to
position 8).
Until the network is not properly configured the chargers will stay in the
“UNCONFIGURED POWER SHARING” status.
myWallbox App and Account
To connect to the chargers and complete the system configuration, you will
need to download the myWallbox app, have a myWallbox account created, and
connect to the Primary charger
via Bluetooth. See the charger Installation Guide for instructions for
downloading the app and setting up a myWallbox account.
For configuration and control of the chargers and the Power Sharing system,
you should complete these steps using an account created or controlled by the
OWNER or account manager in charge of the installed chargers as they will need
to own primary access to manage the chargers and the Power Sharing system.
If you use your own account for set-up, be sure to UNLINK your account from
the charger after system configuration to enable the owner’s control and
management of the chargers and system.
Completing System Configuration via myWallbox
If this is the first time you have connected to any of the installed chargers,
you will need to add the chargers to your myWallbox account.
- Launch the myWallbox app on a Bluetooth-enabled mobile device and log in to the account.
- On the app home, select “I already have a charger”. When adding additional chargers, click the “+” icon.
- On the “Add Charger” screen, insert the serial number and UID for the charger you are adding. Ensure you set the correct state/province location, and click “Add”.
Repeat
Steps 2 and 3 for each charger you are adding to the Power Sharing system.
Once you have added the chargers you are connecting to the Power Sharing system, stand in close proximity to the PRIMARY charger with your mobile device and Bluetooth switched on.
-
Launch the myWallbox app on your mobile device and log in.
-
From the list of chargers, select the charger you have set-up as the PRIMARY charger.
-
Click the Configurations (gear) icon and then, from the Configurations screen, select “Installation Options” and then select “Power Sharing”.
On the Power Sharing screen, you will need to adjust the following settings:
1. Number of chargers. This is the TOTAL number of chargers in the Power Sharing system including the Primary charger.
2. Maximum current per system (phase). This is the maximum amount of power available for all chargers connected to the Power Sharing system.
Be reminded that the system must be connected to a circuit rated to 125% of the maximum power dedicated to the chargers. For example, if the total power available to chargers is 200Amps, the circuit must be rated to 250Amps.
3. Minimum current per charger. The default value is set at 6Amps; however, some vehicles require a minimum current of 10Amps. -
After you have entered all values, click “Save”. It may take up to a minute for the system to complete configuration.
Note that you only will configure the PRIMARY charger as described. No additional configuration is needed for the Secondary chargers UNLESS you are lowering the maximum charging power of each charger. See “Rated Current Adjustment” under the “Hardwired Installation” instructions in the charger Installer Guide.
OPERATING Status
Once each charger in the system has been powered on and configured, you can
view the status of each charger via the myWallbox app. As a reminder, the
status screen for Secondary chargers will appear different from that of the
Primary charger as only the Primary charger can adjust the system settings.
Reviewing the status of each charger can reveal issues with the installation
or provide insight as to why a charger is not charging at its maximum current.
Troubleshooting
LED halo displays red
- This is the default color on a Power Sharing system at start up. If it lasts more than 30 seconds, check to ensure that the Power Sharing system has been properly configured. If not, correct the system configuration and wait for up to another 30 seconds.
- Make sure the total number of chargers includes the Primary charger.
- Make sure the “Maximum current per system (phase)” is set correctly.
Charger(s) have a blink-ing green halo
- Poor contact on the communication cables. Check that allthe communication cables are properly connected on the chargers (see the Wiring section above).
- Wrong resistor value between communication lines. Turn off the power to all the chargers (circuit) and measure the resistance between the CAN-H and CAN-L. If the measurement is not at or around 60 Ohms, check the wiring connections per the “Wiring” section above.
The measured resistance value is not 60 Ohms
-
If the resistance value is higher than 60 Ohms, there is only one charger in the T configuration.
-
If the resistance value is lower than 60 Ohms, there are more than two chargers in the T configuration.
-
The Power Sharing system must have both thefirst and last chargers in the daisy chain set to the T configuration. All the other chargers should be in NT configurations.
-
If the Primary charger is not placed at either of the ends and is placed at any other position in the daisy chain, it should be in the NT configuration.
-
If the resistance value is not near 60 Ohms but the configuration is correct, there may be a charger fault. To check for a fault:
Remove the CAN cables from all chargers.
Change the switch position to T for all chargers.
Check the resistance value for each charger. -
The T chargers should have a 120 Ohms resistance between lines.
-
The NT chargers have open lines or zero resistance.
Erratic behaviour
- Reason: Poor contact on the communication cables. Check that all the communication cables are properly connected on the chargers.
- Wrong configuration on the Primary.
- Wrong resistance value between communication lines. Turn off the power to all the chargers (circuit) and measure the resistance between the CAN-H and CAN-L. If the measurement is not at or around 60 Ohms, check the wiring connections per the “Wiring” section above.
Charger keeps waiting for assignment
- Charger assignment may last up to 30 seconds.
- Make sure that no schedules are programmed.
- Check that the Primary and Secondary chargers are all paired. If a charger is not paired, the current available to that charger will be limited to 6Amps.
- Verify the configuration of “Maximum Current per Phase”. Remember that a connected vehicle will not charge unless there is a minimum of 6Amps available. If there are other connected vehicles and the available power is less than 6Amps, any additionally connected vehicle will go into a queue and will start charging when at least 6Amps is available.
Service
Need more assistance? Contact Wallbox customer service: