CONTREX M-Traverse - Manual (Page 165)

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CP-17 FOLLOWER LINES PER ENGINEERING UNITS
In a level wind application, CP-17 is the number of Follower encoder lines that the Feedback
Frequency input registers as a result of the Follower laypitch that was entered in CP-15. In a
web scanning application, CP-17 is the number of Follower encoder lines that the Feedback
Frequency input registers when the Follower travels one traverse length. When you calculate
this variable, be sure to consider all gear reductions, belt reductions and other types of reducers.
NOTE: CP-17 can not be changed during “Run”.
Use the following procedure to check or find CP-17:
• Place the M-Traverse in F-Stop.
• Activate the Home Set input (clears the Follower position to zero ).
• Place the M-Traverse in F-Stop.
• Display MV-44 (Follower Position).
• Jog the Follower either one laypitch (CP-15) for level wind
or one traverse length( CP-15) for web scan.
• MV-44 should have same value as CP-17.
CP-18 PPR FOLLOWER
The PPR Follower (CP-18) parameter is the number of pulses per revolution of the feedback
encoder (encoder resolution in lines).
NOTE: CP-18 can not be changed during “Run”.
CP-19 MAXIMUM RPM FOLLOWER
The Maximum RPM Follower (CP-19) parameter is the RPMs of the feedback encoder shaft
when the Follower is operating at maximum speed. Although this entry does not need to be
exact, highly inaccurate entries will make it difficult to tune the M-Traverse for precision Follower
profiling. When you calculate this variable, be sure to consider all gear reductions, belt
reductions and other types of reducers.
NOTE: CP-19 can not be changed during “Run”.
CP-23 HIGH SPEED ALARM
Use the High Speed Alarm (CP-23) parameter to determine the RPM level that will activate the
High Speed Alarm Output. When the Follower's motor RPMs are at or above the value in CP-23,
the High Speed Alarm Output will activate.