Contrex M-Traverse Manuel d'utilisateur télécharger pdf (Page 57)

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Follower Scaling Parameters

The M-Traverse allows you to use Engineering Units (e.g., feet, inches) to control and

monitor your system. Follower Scaling is a convenient method for converting encoder

lines to Engineering Units. Scaling Control Parameters give the M-Traverse the

following information:

Engineering Units (CP-15)

In a level wind application, CP-15 is your Engineering Unit (E.U.)

measurement of a laypitch. In a web scanning application, CP-15 is

your E.U. measurement for a traverse length. If your application uses

the M-Traverse's setpoint flexibility to change over the operation, and

you have more than one measurement, then pick one arbitrarily.

However, be sure to reference that same measurement consistently

throughout the scaling set up. In setting up the scaling, you are simply

allowing the M-Traverse to establish a conversion of encoder lines to

the E.U. that you prefer to use. Place the decimal in the location of

your desired resolution (to the tens, hundreds or thousands place). All

of the other Control Parameters or Monitor Parameters that display in

E.U.s will automatically display the correct decimal position.

Lead PPR Reel (CP-16)

In a level wind application, CP-16 is the number of Lead encoder lines

that the Lead Frequency input registers as a result of one revolution of

the reel. In a web scanning application, CP-16 is the number of Lead

encoder lines that the Lead 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. Use the following procedure to check CP-16:

• Place the M-Traverse in F-Stop.

• Activate the Home Set input (clears the Lead position to zero).

• Place the M-Traverse in F-Stop.

• Display MV-43 (Lead Position).

• Move the Lead either one revolution of the reel (level wind) or one

traverse length (web scan).

• MV-43 should have the same value as CP-16.

Follower Lines per Engineering Units (CP-17)

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,

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Contrex M-Traverse Manuel d'utilisateur Page 57