
Chapter 4: Programming the Rhino2
85
4.4.5
4.4.5.1
Motor Protection
Parameter
Possible Values
Default
HHP
Lite
Std Adv
Motor Protection
No / Yes
No
Motor Protection
is a function that calculates the approximate temperature of the motor by
measuring the motor current over time. If the calculated motor temperature becomes too
high, the current output of the
R
HINO
2
is reduced to protect the motor from burning out.
Note:
This function assists in motor protection. However, it cannot completely prevent
the motor from burning out. The motor may last longer, but specific conditions
can still burn out a motor, even with Motor Protection activated.
The motor protection function operates in parallel with other current control
functions and so the actual current limit will be determined by whichever process
requests the lowest operating current.
4.4.5.2
Motor Protection Parameters
Parameter
Possible Values
Default
HHP
Lite
Std Adv
Motor Continuous Current
90A (DS90)
120A (DS120)
160A (DS160)
36A (DS90)
48A (DS120)
64A (DS160)
Motor Heating Time
1 - 255s
20s
Motor Cooling Time
4 - 1020s
32s
These parameters are only used if
Motor Protection
is set to 'Yes'.
Adapt these parameters to match the motor that is fitted on the scooter. See the motor
specifications given by the motor manufacturer for the correct values.
Motor Continuous Current
is the current at which the motor can run continuously without
becoming too hot.
Motor Heating Time
is the time that the motor can run at the programmed
Current Limit
(4.4.5.9) before it becomes too hot. If the motor current has been close to
Current Limit
for
Motor Heating Time
seconds, the current is limited to
Motor Continuous Current
so the motor
can cool down.
Before the current can reach the
Current Limit
value again,
the motor current must stay
below the value of
Motor Continuous Current
for
Motor Cooling Time
seconds.
Note:
The time before the motor protection current limit is activated depends on the
actual motor current.
Motor Heating Time
is the time that the motor can take
the full
Current Limit
current before it becomes too hot. If the actual motor
current is above
Motor Continuous Current
but much lower than
Current Limit
,
the time before the motor protection limit is activated is longer.