Chapter 1, Detail drive configuration and operation, Accel time – Rockwell Automation 20D PowerFlex 700S with Phase I Control Reference Manual User Manual

Page 13: Alarms, Configuration, Accel time alarms, Chapter

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

13

Chapter

1

Detail Drive Configuration and Operation

This chapter explains PowerFlex 700S drive functions in detail. Explanations are
organized in alphabetically by topic. Refer to the Table of Contents for a listing of
topics in this chapter.

Accel Time

Parameter 32 [Accel Time] sets the rate at which the drive ramps up its output
after a Start command or during an increase in desired speed (speed change).

The rate established is the result of the programmed Accel Time and the
programmed motor rated speed, parameter 4 [Motor NP RPM].

Times are adjustable in 0.0001 second increments from 0.01 to 6553.5 seconds.

Alarms

Alarms indicate conditions within the drive that could affect drive operation or
application operation. Alarms are selected during commissioning of the drive.
Examples of alarms include: Encoder loss, communication loss or other
exceptions within the drive.

Configuration:

Parameters 365 [Fdbk LsCnfg Pri] through 394 [VoltFdbkLossCnfg] and
parameters 940 [+Sft OvrTrvlCnfg] through 944 [Positin Err Cnfg] program
the response of the drive to various conditions. Responses include Ignore, Alarm,
Fault Coast Stop, Fault Ramp Stop, and Fault Current Limit Stop.

Parameters 326 [Alarm Status 1] through 328 [Alarm Status 3] indicated any
alarms that are active.

ATTENTION: Only qualified personnel familiar with the PowerFlex 700S Drive
and associated machinery should plan or implement the installation, start-up
and subsequent maintenance of the system. Failure to comply may result in
personal injury and/or equipment damage. Refer to Chapter 2 - “Start-Up” of
the PowerFlex 700S High Performance AC Drive Phase I Control, User Manual,
publication

20D-UM001

, for detailed information on applying power to a drive.

Parameter 4 [Motor NP RPM]

Parameter 32 [Accel Time]

------------------------------------------------------------------------

Accel Rate

=

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