Rockwell-automation 1771-QB Linear Pos. Manual de usuario descargar pdf (Pagina 103)

Formatting Module Data (WRITES)

Chapter 7

724

Global Acceleration/Deceleration (words 24, 25 and 53, 54)

This parameter specifies the acceleration and deceleration rate the module uses

for all jogs and for those setpoint and motion segment moves that do not use

local acceleration and deceleration rates. The deceleration value is also used for

executing slide stops during manual mode.

Figure 7.32

Global

Acceleration/Deceleration W

ords

50076

Global acceleration rate,

BCD 999.9 ips/s or 9999 mmps/s max

Binary 3276.7 ips/s or 32767 mmps/s max

Global deceleration rate,

BCD 999.9 ips/s or 9999 mmps/s max

Binary 3276.7 ips/s or 32767 mmps/s max

15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00

Velocity Smoothing (Jerk) Constant (words 26 and 55)

The velocity smoothing constant (also known as the jerk constant) specifies the

maximum rate that the acceleration or deceleration can change. When the

module commands a move, the acceleration and deceleration increases or

decreases at the rate specified by this constant.

Figure 7.33

Velocity

Smoothing (Jerk) Constant W

ord

50075

Velocity smoothing constant,

BCD 99.99 (ips/s)/ms or 999.9 (mmps/s)/ms max

Binary 327.67 (ips/s)/ms or 3276.7 (mmps/s)/ms max

15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00

1 2 ... 98 99 100 101 102 103 104 105 106 107 108 ... 225 226

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Rockwell-automation 1771-QB Linear Pos. Manual de usuario Pagina 103