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Configuration process overview
WARNING: Electric vehicles can be dangerous. All testing, fault-finding and adjustment
should be done only by competent personnel. The drive wheels should always be off the
floor and free to rotate during the following procedures.
NOTE: 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:
Step
Stage
1
Motor characterization
2
I/O configuration
3
Vehicle performance configuration
4
Vehicle features and functions
Access authorization
To prevent unauthorized changes to the controller configuration there are 5 levels of
accessibility: (1) User, (2) Service Engineer, (3) Dealer, (4) OEM Engineering and (5) Sevcon
Engineering. The lowest level is (1), allowing read only access, and the highest level is (5)
allowing authorization to change any parameter.
To login with DVT, select User ID and password when prompted.
To login with other configuration tools write your password and, optionally, a user ID to object
5000
sub-indices 2 and 3. The access level can be read back from sub-index 1. The password
h
is verified by an encryption algorithm which is a function of the password, user ID and password
key (5001
).
h
The password key allows passwords to be made unique for different customers. The user ID
also allows passwords to be made unique for individuals.
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 Gen4 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.
To enter pre-operational, write '1' to 2800
To restore the CANopen network to operational, write '0' to 2800
Doc. # 177/52701
Rev. 3.3
Page
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on the master node.
h
Configuration
.
h
6-7
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