Bosch 6000 User's Guide Page 99

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84
6000 Series Programmer's Guide
Acceleration & Deceleration Scaling (SCLA and PSCLA)
Steppers: If scaling is enabled (SCALE1), all accel/decel values entered are internally
multiplied by the acceleration scaling factor to convert user units/sec
2
to motor
steps/sec
2
. The scaled values are always in reference to motor steps, not encoder
steps, regardless of the ENC command setting.
Servos: If scaling is enabled (SCALE1), all accel/decel values entered are internally
multiplied by the acceleration scaling factor to convert user units/sec
2
to encoder,
resolver, LDT, or ANI counts/sec
2
. This includes all S-curve accel/decel values
(servos only).
All accel/decel commands for non-interpolated motion (e.g., A, AD, HOMA, HOMAD, JOGA,
etc.) are multiplied by the SCLA command value. All accel/decel commands for linear and
circular interpolated motion (e.g., PA, PAD, etc.) are multiplied by the PSCLA command value.
As the accel/decel scaling factor (SCLA/PSCLA) changes,
the resolution of the accel and decel values and the number
of positions to the right of the decimal point also change
(see table at right). An accel/decel value with greater
resolution than allowed will be truncated
(e.g., if scaling is set to SCLA1Ø, the A9.9999
command would be truncated to A9.9).
SCLA / PSCLA value
(steps/unit
2
)
1 - 9
10 - 99
100 - 999
1000 - 9999
10000 - 99999
100000 - 999999
Decimal
Places
0
1
2
3
4
5
Use the following equations to determine the range of acceleration and deceleration values for
your product.
Product Min. Accel or Decel (resolution) Max. Accel or Decel
Steppers 0.001 x DRES
SCLA
999.9999 x DRES
SCLA
Servos
Encoder or resolver feedback:
0.001 x ERES
SCLA
LDT feedback:
0.001 x LDTRES
SCLA
ANI feedback:
0.819
SCLA
Encoder or resolver feedback:
999.9999 x ERES
SCLA
LDT feedback:
999.9999 x LDTRES
SCLA
ANI feedback:
818999.9181
SCLA
Velocity Scaling (SCLV and PSCLV)
Steppers: If scaling is enabled (SCALE1), all velocity values entered are internally
multiplied by the velocity scaling factor to convert user units/sec to motor
steps/sec. The scaled values are always in reference to motor steps, not encoder
steps, regardless of the ENC command setting.
Servos: If scaling is enabled (SCALE1), all velocity values entered are internally
multiplied by the velocity scaling factor to convert user units/sec to encoder,
resolver, LDT, or ANI counts/sec.
All velocity commands for non-interpolated motion (e.g., V, HOMV, HOMVF, JOGVH, JOGVL,
etc.) are multiplied by the SCLV command value. The velocity command for linear and circular
interpolated motion (PV) is multiplied by the PSCLV command value.
As the velocity scaling factor (SCLV/PSCLV) changes, the velocity command's range and its
decimal places also change (see table below). A velocity value with greater resolution than
allowed will be truncated. For example, if scaling is set to SCLV1Ø, the V9.9999 command
would be truncated to V9.9.
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