ID | Label | Type | #Val | Min | Max | Attr | Description |
---|---|---|---|---|---|---|---|
10727 |
Twang-ref duration for twang ON, sec |
Flt32 |
|
0.01 |
5 |
|
Amount of time in seconds to allow the motor to be energized during the twang process. |
10728 |
Twang-ref duration for twang OFF, sec |
Flt32 |
|
0.01 |
5 |
|
Amount of time in seconds to let the motor be de-energized before wrapping up the twang-ref operation. |
10729 |
Twang-ref delay time to release brake, sec |
Flt32 |
|
0.01 |
10 |
|
After a twang is applied, this is the time delay in seconds before the brake is released. |
10730 |
Twang-ref delay time to engage brake, sec |
Flt32 |
|
0.01 |
10 |
|
When the twang is active, the motor is effectively locked on a single phase. When this occurs, the brake is re-engaged. After the brake is engaged, the system waits the time specified by this parameter before un-twanging (de-energizing) the motor. This delay allows the brakes to fully engage. |
10731 |
# of ramp steps to a twang |
Int16 |
|
|
|
|
# of steps to ramp to a target twang torque and angle. The default # of steps is 5. In this case, to reach a target twang it takes a total of 5 twangs. This allows the user to minimize the amount of disturbance induced by the twang-ref process. |
10732 |
# of twang-ref checks |
Uint8 |
|
|
|
|
# of intermediate twang-ref checks. After the motor is initially twanged
to the commutation reference position the servo will optionally commence
additional twangs to different offset angles to make sure that the
first twang reached the commutation reference position correctly. The
default # of twang checks is 2. Setting this value to 0 would cause
the system to skip the twang-ref check altogether. |
10733 |
Twang-ref check duration time, sec |
Flt32 |
|
0.01 |
5 |
|
After each twang check process, this is the delay time in seconds for the axis to settle before the twang position is read. The twang position is compared to the initial twang-reference position to calculate a delta count. It is then converted into a delta angle, and checked against the commanded twang angle. The difference must fall within a preset percentage limit (DataID 10734) in order to pass the check. |
10734 |
Twang-ref check position tolerance limit, % |
Flt32 |
|
0 |
40 |
|
Maximum allowed twang angle check deviation percentage. See DataID 10733. |
10735 |
Twang-reference torque % |
% |
|
|
|
|
Torque used during the
twang reference operation (also see "Twang-ref angle, degree" DataID
10726). This value and the ref angle are supplied to a voltage
twang command, which energizes the motor. After the motor "locks" into
the twang angle, it establishes the commutation reference position. |