Pf[n] – floating point parameters – ElmoMC SimplIQ Digital Servo Drives-Bell Command Reference User Manual

Page 132

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PF[N] – Floating point parameters

Purpose:

This parameter vector is used for device data, which is normally entered by the tuning
environment. The user is encouraged to use the tuning environment instead of
entering these parameters manually.

Parameter Description

Units

[range] Default

PF[1]

Motor induction. Used for correcting
the motor voltage at high speeds.

mH. [0.05 … 500]

1.0

PF[2]

Motor torque constant, Ke. Used for
correcting the motor voltage at high
speeds.

Volt/(Rad/Sec), [0
...50]

0.1

PF[3]

Current loop delay, used for cogging
compensation

Sec, [0 ... 2e-3]

1e-4

PF[4]

Maximum electrical frequency for
applying full cogging correction.

Beyond this frequency, cogging
correction decreases.

Hz, [80 ... 5000]

200

PF[5]

Maximum electrical frequency for
applying cogging correction at all.

Beyond this frequency, cogging
correction is not made.

For proper operation, keep
PF[5]>PF[4].

Hz, [80 ... 5000]

450

PF[6] Reserved

40

PF[7]

Ratio between current command step
size and resulting current overshoot.

Serves in overshoot limiting of the
current loop.

Pure number,
[0…1]

0.20

PF[8]

Ratio between current command
slope in (Unit/Ts) and resulting
current overshoot.

Serves in overshoot limiting of the
current loop.

Pure number
[0…3]

0.15

SimplIQ for Steppers Command Reference Manual

Alphabetical Listing

MAN-STECR (Ver. 1.1)

124

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