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Response time
The response time of Smart Logger is maximum 1 ms, i.e. from the moment a stop position is reached it can take
at most 1 ms before a stop signal is given.
Measuring accuracy
The speed of the pulse sensor I8 is calculated based on a mean over 25 ms, which means that the stop time of a
machine in most cases is correct, but in some special situations the actual stop time of the machine can be slightly
less than the calculated stop time of the program. The used algorithm is specially adapted to be correct for slower
machine speeds and is used as a safety aspect to guarantee that the stop time of a machine is never larger than
that of the program.
Indication
Two LED's on top of Smart Logger indicate power status. The LED marked PC indicates if Smarts CPU is powered
by the PC and the LED marked 24 VDC indicates if the power supply for the external units is connected.
2TLC172188M0201, rev. H
9
www.abb.com/lowvoltage
2012-01-03
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