User guide

Operation l 4-47

Operation

Mode Page Descriptions - Puller

Modes

Master Mode

When the puller is in Master Mode it directly controls the speed of the extrusion

line. In this instance the puller is the Master. Sensors may be included in the

extrusion process to monitor the product and auto-correct the speed as in an auto-

mated diameter size process. Auto-corrections are made to the same preset that the

operator uses.

The operator can enter in a new value at the Main Page to control speed.

Alternatively, the operator may use the (+) and (-) buttons on the Main Page with

any one of four user-preferred scroll amounts in order to trim the puller speed to

the required level. In a typical application the operator uses both coarse and fine

methods. The keyboard method would be used first to set the approximate coarse

speed. Afterwards, the speed is nudged up or down using the (+) and (-) buttons

using fine scroll increments to achieve the exact speed that is desired.

NOTE: In Follower Mode remotes are used to make ratio changes.

See Operation

Section entitled, Mode Page Descriptions - Puller Modes, Remotes.

Follower Mode

The puller may follow an upstream source such as an encoder mounted on anoth-

er puller or a puller with an encoder output built into the motor. The source must

be a quadrature encoder. When the puller is in Follower Mode the operator does

not set speed. Speed adjustments such as those needed to match the puller

mechanical differences or product shrinkage/slippage can be made using Ratio.

When scaled correctly a 1.000:1 ratio should provide an exact puller follow.

See

Operation Section entitled, Set Up 2 Page Description, Tuning the Belt Drive.

NOTE: In Follower Mode remotes are used to make ratio changes.

See Operation

Section entitled, Mode Page Descriptions - Puller Modes, Remotes.

Analog Mode

In most cases Analog is a Follower mode. A voltage such as a 0 to 10-volts is

applied to set speed. A 10-turn potentiometer could be installed right at the puller

in which case Analog would be a local Master Mode.

NOTE: In Analog Mode remotes are used to make ratio changes.

See Operation

Section entitled, Mode Page Descriptions - Puller Modes, Remotes