Setting up diagnostic trending, Diagnostic setup – Rockwell Automation 7000A PowerFlex Medium Voltage AC Drive - Air-Cooled (A Frame) User Manual

Page 353

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Component Definition and Maintenance 5-111

7000 “A” Frame

7000A-RM001A-EN-P – January 2011


8.

Once the firmware download is complete, the message “Download

successfully completed!” will appear on your laptop screen. At this
point, press any key to close the DOSFWDL program.


9.

Now, remove the serial cable from your laptop and connect it to ACB

board port J12. The Terminal will now start communicating with the
drive.

The diagnostic trending is a valuable tool for troubleshooting faults in the
drive. It is a method of capturing the variation in the values of different
variables over a period of time prior to and after a fault or warning
condition. In the PF7000 drive with ForGe control, the maximum number
of parameters that can be assigned for trending is 16. The length of the
trend buffer is 100 samples.

Diagnostic Setup

The diagnostic setup is used to define the source of the diagnostic trigger.
Information that has to be programmed in the diagnostic setup is listed
below:

Trace

The Read-Only Parameter which is assigned to a particular
list. The item linked to Trace 1 is used as the trigger value.
There are 16 traces in total, although not all have to be active.


Rate

The time delay between sample periods. Any value between 0
and 20,000 msec can be set. Use numeric keypad to enter the
value and press the enter key to accept.


Post

The percentage of the list which will occur after the after the
trigger point. Any value between 0 and 100% may be used.


Trigger

Defines whether you want a continuous or a single-shot
trigger. Pressing this key will place an S or a C in front of the
trigger parameter. You will almost always want a Single-Shot
(S) trigger.

S = Single shot >> the trigger occurs only once and stops. The
trigger must be manually re-armed. The Re-Arm function
clears the memory buffer, which contains the data stored from
the previous trend. It is necessary to reset the trending feature
in order for a second trigger to occur, unless you have
continuous trigger enabled.

Setting up Diagnostic
Trending

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