ABB ACS850-04 series, Руководство по прошивке

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Program features 65
For amplitude logger 2, the user can select a signal to be sampled at 200 ms intervals
when the drive is running, and specify a value that corresponds to 100%. The
collected samples are sorted into 10 read-only parameters according to their
amplitude. Each parameter represents an amplitude range 10 percentage points
wide, and displays the percentage of the collected samples that fall within that range.
Amplitude logger 1 is fixed to monitor motor current, and cannot be reset. With
amplitude logger 1, 100% corresponds to the nominal output current of the drive (
I
2N
).
Settings
Parameter group 64 Load analyzer (page 220 ).
Maintenance counters
The program has six different maintenance counters that can be configured to
generate an alarm when the counter reaches a pre-defined limit. The counter can be
set to monitor any parameter. This feature is especially useful as a service reminder.
There are three types of counters:
• Ontime counter. Measures the time a digital source (for example, a bit in a status
word) is on.
• Rising edge counter. This counter is incremented whenever the monitored digital
source changes state from 0 to 1.
• Value counter. This counter measures, by integration, the monitored parameter.
An alarm is given when the calculated area below the signal peak exceeds a
user-defined limit.
Per
centage of s
ampl
es
0…1
0%
10…2
0%
20…3
0%
30…4
0%
40…5
0%
50…6
0%
60…7
0%
70…8
0%
80…9
0%
>9
0%
Amplitude ranges
(parameters 64.24 … 64.33 )