Emerson Epsilon EP Drive 400518-01 Manual de instalación descargar pdf (Pagina 63)

Setting Up Parameters

1. Index.1.Accel specified by user is used to decelerate from Index.0.Vel, to Index.1.Vel, but overshoots since ramp is not

aggressive enough to reach Index.1.Vel within Index.1.Dist of 3 Revs.

2. Index.1 begins at Index.1.Vel but since Index.1.Decel specified by user is not aggressive enough to decelerate to zero

velocity within Index.1.Dist of 3 Revs slight overshoot occurs.

3. Index.1 begins at Index.0.Vel and ramp is automatically calculated to reach zero speed within Index.1.Dist of 3 Revs

without any overshoot. If Index.1.Accel and or Decel were aggressive enough to reach zero speed within 3 Revs, they

would have been used instead of automatically calculating the ramp.

4. Index.1 begins at Index.1.Vel and ramps is automatically calculated to reach zero speed within Index.1.Dist of 3 Revs

without any overshoot. If Index.1.Decel was aggressive enough to reach zero speed within 3 Revs, it would have been

used instead of automatically calculating the ramp.

Figure 45: Ramps Examples of a Fast Index to a Slower Index

1. Index.0.Accel specified by user is used to accelerate up to Index.0.Vel. Index.0.Accel is aggressive enough

to reach Index.0.Vel within Index.0.Dist of 5 Revs. Since indexes are compounded together, Index 1 begins

at Index.0.Vel.

2. When indexes are Blended, Index 0 should end at velocity of Index 1, but Index.0.Accel is not aggressive

enough to reach Index.1.Vel within Index.0.Dist of 5 Revs. Therefore, entire distance of Index 0 is used to

accelerate towards Index.1.Vel.

3. Acts the same as the Compound with User Ramps because Index.0.Accel entered by user is aggressive

enough to reach Index.0.Vel of 500 RPM. If Index.0.Accel entered by the user was not aggressive enough to

reach 500 RPM within 5 Revs, necessary ramp would be calculated.

4. Acceleration ramp is automatically calculated to reach Index.1.Vel within Index.1.Dist of 5 Revs. If user had

entered a ramp aggressive enough to reach Index.1.Vel within 5 Revs, no automatic ramp calculation would

be required, and the user entered acceleration rate would be followed.

Figure 46: Ramps Examples of a Slow Index to a Faster Index

Distance

(Revs)

Velocity

(RPM)

Accel

(RPM/sec)

Decel

(RPM/sec)

Index 0 5 500 1000 1000

Index 1 20 1250 2000 2000

= Index 0

= Index 1

1250

500

Compound Index

User Ramps

Blended Index

Auto Ramps

Blended Index

User Ramps

Compound Index

Auto Ramps

1 2 ... 58 59 60 61 62 63 64 65 66 67 68 ... 239 240

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Emerson Epsilon EP Drive 400518-01 Manual de instalación Pagina 63

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