Configuration process overview
Electric vehicles can be dangerous. All testing, fault-finding and adjustment should be carried
out by competent personnel.
We recommend saving parameter values by creating a DCF, before making any alterations so you can refer to, or
restore the default values if necessary. Do this using DVT.
This part of the manual assumes you have a vehicle designed and correctly wired up with a CANopen
network setup. Before you can safely drive your vehicle it is necessary to go through the following
process in the order presented:
Table 19 - Configuration requirements
Access authorization
To prevent unauthorized changes to the controller configuration there are 4 levels of accessibility: (1)
User, (2) Service Engineer, (3) Dealer and (4) OEM Engineering. The lowest level is (1), allowing read
only access, and the highest level is (4) allowing authorization to change any parameter.
To login write your 32-bit password to object 5000
h
sub-index 4. The access level can be read back from
sub-index 1. The passwords for access levels 1 to 4 are fully configurable by the customer in 5000
h
sub-
indices 5-8 so they can be made unique. Log in at access level 4 is required to change the passwords.
NOTE: Make a note of any changed passwords. Resetting forgotten passwords can only be performed by
SEVCON.
How NMT state affects access to parameters
Some important objects can only be written to when the controller is in the pre-operational state. DVT
takes Dragon8 in and out of this state as required.
If you are not using DVT you may need to request the CANopen network to enter pre-operational
before all objects can be written to.
The NMT state can be determined by monitoring the heartbeats or by reading 5110
h
. 05 = operational
and 7F = pre-operational.
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