Application example, Analog inputs, Analog input specifications – Rockwell Automation 20D PowerFlex 700S with Phase I Control Reference Manual User Manual

Page 14: Analog input configuration

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14

Rockwell Automation Publication PFLEX-RM002D-EN-E - August 2013

Chapter 1

Detail Drive Configuration and Operation

Application Example:

Parameter 376 [Inv Ol Pend Cnfg] is set to a value of 1 “Alarm”. This configures
the drive to set the alarm bit, parameter 326 [Alarm Status 1] bit 15 “Inv OL
Pend” when the inverter overload pending event occurs. This alarm will allow the
drive to continue running. The user can make the decision as to what action to
take in relation to the alarm.

Analog Inputs

Analog Input Specifications

There are 2 analog inputs located on TB1 - Row B (Bottom Terminals). Each
input accepts a +/-10V or +/-1V bipolar, differential signal. Dip switches SW1-1
and SW1-2 are used to select whether the analog inputs are +/-10V or +/-1V.
The A/D converter is 14 bits including the sign bit (13 bits plus the sign bit).

Analog Input Configuration

Once the Analog Input is converted, [Anlg Inx Offset] can be applied. This
parameter has a range of +/-20V. [Anlg Inx Volts] is the sum of the A/D output
and [Anlg Inx Offset]. [Anlg Inx Volts] are displayed as +/-10V.

[Anlg Inx Scale] scales [Anlg Inx Volts] to the range of [Anlg Inx Data]. A
destination parameter, such as a speed reference can then be linked to [Anlg Inx
Data].

[AIx Filt Gain] and [Anlg Inx Filt BW] are used to filter the analog input data.

A/D
14bit

803

802

804

805

TB1-B11

TB1-B10

-

+

Anlg ln1 Offset

Anlg ln1 Scale

+

X

Anlg ln1 Volts

Lead Lag

(kn * s) + wn

s + wn

800

Anlg ln1 Data

Al 1 Filt Gain

Anlg ln1 Filt BW

801

A/D
14bit

809

808

810

811

TB1-B8

TB1-B7

-

+

Anlg ln2 Offset

Anlg ln2 Scale

+

X

Anlg ln2 Volts

Lead Lag

(kn * s) + wn

s + wn

806

Anlg ln2 Data

Al 2 Filt Gain

Anlg ln2 Filt BW

807

Shield

TB1-B9

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