Difference between revisions of "MC-Basic:axis.TIMEOFSHORTMOTIONS"
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Defines the lower threshold below which TACCMIN and TDECMIN no longer affect motion. If the actual values of acceleration (or deceleration) time is below this limit, the entire excitation-limiting algorithm (TACCMIN and TDECMIN) is switched off. | Defines the lower threshold below which TACCMIN and TDECMIN no longer affect motion. If the actual values of acceleration (or deceleration) time is below this limit, the entire excitation-limiting algorithm (TACCMIN and TDECMIN) is switched off. | ||
| − | + | {{Note/Caution|The value of TSHORT is compared to acceleration/deceleration time only, and not to the entire duration of movement. Therefore, long movements with a long cruise-velocity phase and short acceleration/deceleration times could trigger the switch-off of the excitation-limiting algorithm. For best results, use small values (1-4 ms).}} | |
| − | {{Note/Caution| | ||
| − | |||
Revision as of 12:01, 19 March 2014
Defines the lower threshold below which TACCMIN and TDECMIN no longer affect motion. If the actual values of acceleration (or deceleration) time is below this limit, the entire excitation-limiting algorithm (TACCMIN and TDECMIN) is switched off.
 | CAUTION |
| The value of TSHORT is compared to acceleration/deceleration time only, and not to the entire duration of movement. Therefore, long movements with a long cruise-velocity phase and short acceleration/deceleration times could trigger the switch-off of the excitation-limiting algorithm. For best results, use small values (1-4 ms). |
 | NOTE |
| Setting one of TACCMIN, TDECMIN or TSHORT to 0, completely disables the entire timing feature (excitation-limiting algorithm) |
Short form
<axis>.TSHORT
Syntax
<axis>.TSHORT=<numeric expression>
Availability
Versions AMCS 0.4.4.x and higher
Type
Long
Range
0 to maxlong
Units
milliseconds (ms)
Default
0 –not active
Scope
Task, Terminal
Limitations
Modal/Nodal Read/Write
Examples
A1.timeaccmin = 500
A1.timedecmin = 1000
A1.timeofshortmotions = 200