Sharp X-70H Manuel d'utilisateur télécharger pdf (Page 210)

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Appendix 3 Way of thinking behind acceleration/acceleration time

The acceleration time is the time from speed 0 up to when reference speed (parameter 1

address A+0010 to 0013) is reached. The deceleration time is the time from the reference

speed up to when speed 0 is reached.

Accordingly, the time until the set speed is reached, the time from the set speed up to 0 or the

startup speed, and the number of pulses at this time in actual positioning are calculated by

the following equations:

where,

Vs: Startup speed (parameter 1 address A+0020 to 0023)

VT: Reference speed (parameter 1 address A+0010 to 0013)

V: Target speed (data)

Tu: Acceleration time from startup speed (Vs) to target speed (V)

Td: Deceleration time from target speed (V) to startup speed (Vs)

TU: Preset acceleration time (data)

TD: Preset deceleration time (data)

The number of pulses in the acceleration/deceleration intervals is calculated as follows:

Tu=

VH - VL

VM - VL

TAU

TD=

VH - VL

VM - VL

TAD

TM=

V - VS

• TU

VT - VS

Td=

V - VS

VT - VS

• TD

Number of acceleration interval pulses PU=

TU (V+VS)

Number of deceleration interval pulses PD=

Td (V+VS)

Speed(pps)

(Target speed)

(Speed setting)

Time(ms)

1 2 ... 205 206 207 208 209 210 211 212 213 214 215 ... 234 235

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Sharp X-70H Manuel d'utilisateur Page 210