DMC SuperSigma2, Руководство для продвинутых пользователей

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SuperSigma2 AM PMS – V1.5.6 17-1-2020 Page 83 (97) ©2019 DMC GmbH Herten Germany
M7-26 Timed Current Limit Timer “IthTime”
M7-27 Timed Current Limit max. Current threshold “CurrTh”
M7-28 Timed Current Limit Low current threshold “ImaxLow”
Timed current Limit
The graph below shows the parameters that are involved in setting up the Timed Current Limit. This feature can be used
to protect the vehicle’s motor(s) from overheating.
If the current rises above a set threshold ( “ M7-27 Timed Current Limit max. Current threshold “CurrTh”” ) for a specified
period of time ( “ M7-26 Timed Current Limit Timer “IthTime”” ), the controller can reduce the maximum current available
to the motor to a lower current ( “ M7-28 Timed Current Limit Low current threshold “ImaxLow”” ). After the reduction has
occurred, the maximum current output will remain at the lower level for a period of 3 times the “ M7-26 Timed Current
Limit Timer “IthTime”” . If necessary, once this period has expired, the current can then be returned to its original level.
Example
This sets the period of time, which if exceeded, will initiate a reduction in the controller’s maximum current output. A
programmed value of zero disables the Timed Current Limit feature.
The adjustable range is 0s to 60s in 1s steps.
Example:
“ M7-27 Timed Current Limit max. Current threshold “CurrTh”” is set to 420Arms
“ M7-28 Timed Current Limit Low current threshold “ImaxLow”” is set to 400Arms
“ M7-26 Timed Current Limit Timer “IthTime”” is set to 10s
If the motor current is above 420Arms for 10 seconds, then the controller will reduce the maximum current available to
400Arms for a period of 30 seconds (3 x 10 secs).