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Installation and Operation Guide
ED-DT318B
Drive Train Systems with Traction Control, Inverter/Controller, and Motor with 2 Speed Transmission
BC353060341319en-000101
Revision D
© Danfoss | November 2020 | 65
Classified as Business
Max Value:
15
Units:
Rolling Count
Description: The Watchdog count is used to detect missed message and to detect issues with VCU messaging
procedures.
In each successive
Traction Control Parameters
Command
, the
Watchdog Count
will be the
Watchdog Count
of the previous
Traction Control Parameters
Command
+ 1. If the
Watchdog
Count
of the previous
Traction Control
Parameters Command
was 15, the
Watchdog Count
will be reset to 0.
If the
Watchdog Count
for a
Traction Control Parameters Command
does not equal the
Watchdog Count
of the previous
Traction Control Parameters Command
+ 1. The TCU will
report a
Traction Control Parameters Command Message Error
. If TCU does not receive a
Traction Control Command
for 1 second, or it takes more than 1 second to receive at least three
successive
Traction Control Parameters Command
messages in which the
Watchdog Count
conforms to the requirement, the TCU will report
Traction Control Parameters Command
Watchdog Timeout
and will instruct the MCU to stop producing torque.
7.2.2.2
Acceleration Limit
dbc ref:
TCUCmd2_AccelerationLimit
lsb:
41
msb:
56
Offset:
0
Scale Factor: 1
Min Value:
0
Max Value:
32128
Units:
rpm/s
Description: The maximum allowed rate of controlled acceleration/deceleration of the transmission output
speed.
Values less than 50 will be ignored. If this field never contains a value equal to or greater 50, the
TCU will allow the MCU to use its configured default value.
If value of this field exceeds 50, that value will be conveyed to the MCU. If this value is later set to
a value less than 50, the previously written value will remain in effect.
Note 1: The Limits Command Message to the MCU should only be sent when the Acceleration
Limit, Max Source Current, or Max Sink Current values are changed.
Note 2: To avoid perturbations due to fluctuating limits, the command to the MCU will only be
updated at a 1s interval.
7.2.2.3
Max Source Current
dbc ref:
TCUCmd2_MaxSourceCurrent
lsb:
33
msb:
40
Offset:
0
Содержание ED-DT318B
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