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BECKHOFF
18
Screen page "Speed"
Use the default values for the motor as a starting point for optimization.
Cycle time of the speed controller: 250 µs
SpeedLimit
ASCII: VLIM
Limits the motor speed. The maximum value also depends on the used motor and encoder.
Rotary Direction
ASCII: DIR
Fixes the direction of rotation of the motor shaft, referred to the polarity of the setpoint.
Make changes only while the amplifier is disabled + reset. This parameter is not available, if a SERCOS
interface is built-in.
After changing the rotary direction the hardware limit switches have to be exchanged.
Standard setting: right-hand (cw) rotation of the motor shaft (looking at the shaft end), with:
—
—
Setp. Ramp+
ASCII: ACC
Limits the rate of increase of the internal setpoint processing during acceleration to the speed limit (valid for
both directions). A jump or step in the setpoint that is provided will be turned into a smoother, more favorable
transition. As long as the ramp time is less than the mechanically limited rise time of the system, the response
time of the system will not be negatively affected.
The ramp time settings are still effective if the limit-switches are activated.
Depending on the setting of the parameter ACCUNIT, acceleration time or ramp gradient will be set.
Setp. Ramp–
ASCII: DEC
Limits the rate of decrease of the internal setpoint processing during braking to the zero speed (valid for both
directions). A jump or step in the setpoint that is provided will be turned into a smoother, more favorable
transition.
As long as the ramp time is less than the mechanically limited fall time of the system, the response time of the
system will not be negatively affected. In most cases the Setp.ramp+ and Setp.ramp– can be set to the same
value.
The ramp time settings are still effective if the limit-switches are activated.
Depending on the setting of the parameter ACCUNIT, acceleration time or ramp gradient will be set.
Setup Software
positive voltage on terminal X3/4 (+ ) against terminal X3/5 ( - ) or
positive voltage on terminal X3/6 (+ ) against terminal X3/7 ( - )
ID
Function
0
negative
1
positive
07/03
Default: 3000 rpm
Default: 1
Default: 10 ms
Default: 10 ms
Screen page "Speed"
valid for OPMODES 0+1
valid for all OPMODES
valid for OPMODES 0+1
valid for OPMODES 0+1
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