User manual

Chapter 1 Series 1700 Introduction
1-7
20 Gear Drive, Plymouth Ind. Park, Terryville, CT 06786
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Transducer Setup Parameters
Tachometer Response
This parameter sets the time between tachometer updates and the tachometers resolution.
Update times are 32, 60, 120, or 240 mSec. The two resolutions, available only with the
240 mSec update time, are 1.0 or 0.1 RPM.
hýThe tachometer response default value is 240 mSec with 1.0 RPM resolution.
Update time affects the maximum speed that the module can report without error. If the
speeds listed in the table below are exceeded, the module will display erroneous data as well as
send it to the processor.
Update Time Resolution Max. Speed
32 mSec 1.0 RPM 5000 RPM
60 mSec 1.0 RPM 5000 RPM
120 mSec 1.0 RPM 5000 RPM
240 mSec 1.0 RPM 5000 RPM
240 mSec 0.1 RPM 999.9 RPM
Table 1.4 Maximum Tachometer Values
Scale Factor
The Scale Factor sets the number of counts per turn of the resolver.
hýThe Scale Factor default value is 360. This gives 1 degree resolution.
hý1730 modules can program the Scale Factor to any value between 2 and 1024.
hý1740 modules can program the Scale Factor to any value between 2 and 8192.
Count Direction
This new parameter sets the direction of transducer shaft rotation to increase the position
count. If the transducer cable is wired as specified in this manual and the count direction is set
to positive, the position count will increase with clockwise rotation (looking at the shaft). If the
count direction is set to negative, the position count to increase with counter-clockwise
rotation.
hýThe Count Direction default value is positive.
It is also possible to reverse the count direction by reversing two wires in the
transducer cable. If you are installing this module either as a replacement for
an older module or on a machine that is a copy installation of a previous
system, you will probably not need to set this parameter. Once the machine is
setup, you can easily change this parameter if the position is increasing in the
wrong direction.