Feature select, Dwell frequency, Dwell time – Rockwell Automation 1336F PLUS II User Manual - Firmware 1.xxx-6.xxx User Manual

Page 101: Speed control, Slip @ f.l.a

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Programming

6–19

Feature

Select

This group contains the necessary parameters to activate and program advanced features
of the drive.

[Dwell Frequency]

This value sets the frequency that the drive will immedi-
ately output (no Accel Ramp) upon a start command. This
parameter requires a programmed [Dwell Time].

Parameter Number

43

Parameter Type

Read and Write

Display Units / Drive Units

0.1 Hertz / Hertz x 10

Factory Default

0.0 Hz

Minimum Value

0.0 Hz

Maximum Value

7.0 Hz

[Dwell Time]

This value sets the time the drive will continue to output
[Dwell Frequency] before ramping to [Freq Command].

Parameter Number

44

Parameter Type

Read and Write

Display Units / Units

1 Second / Seconds

Factory Default

0 Sec

Minimum Value

0 Sec

Maximum Value

10 Sec

[Speed Control]

This parameter selects the type of speed modulation active
in the drive.

This parameter cannot be changed while the drive is
running.

Important: “No Control” and “Phase Lock” are the only
available options for synchronous motors.

If encoder feedback closed loop speed regulation is re-
quired, “Encoder Fdbk” must be selected.

Parameter Number

77

Parameter Type

Read and Write

Factory Default

“Slip Comp”

Units

Display Drive

“No Control” 0

Frequency regulation

“Slip Comp” 1

Slip compensation

“Speed Droop” 2

Negative slip compensation

“Phase Lock” 3

Enable phase lock to pulse input

“Encoder Fdbk” 4

Encoder feedback-closed loop

“Droop + Reg” 5

Enc. fdbk.-closed loop w/ active
droop

“P Jump” 6

Traverse function

“Process PI” 7

Closed loop PI control

[Slip @ F.L.A.]

This value sets the amount of automatic increase or de-
crease to the drive output to compensate for motor slip.
When [Speed Control] is set to “Slip Comp”, a percentage
of this value proportional to output current is added to the
drive output frequency. When [Speed Control] is set to
“Droop”, a percentage of this value proportional to output
current is subtracted from the drive output frequency.

Parameter Number

42

Parameter Type

Read and Write

Display Units / Drive Units

0.1 Hertz / Hertz x 10

Factory Default

1.0 Hz

Minimum Value

0.0 Hz

Maximum Value

10.0 Hz

Dwell Time

Frequency of

Applied Voltage

0

0

Time

Maximum

Dwell Frequency

Start
Command

Dwell

Time

Sync RPM – Rated RPM

Sync RPM

x Rated Hz.

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