Service manual

Folder Speed Encoders
There are two folder speed encoders. The one seen in the picture below is
used to report the folder speed to the operator/maintenance person through
the monitor. The lower left picture is the other encoder used by the folder
control board.
The pulses generated by the encoder Disc and Sensor, shown in the picture
on the lower left of this page, are used by the motor control board to
maintain a set speed. These pulses are used by the circuitry to keep the
motor at the speed set by the speed control.
420T V6LT OPERATOR & SERVICE MANUAL ISSUE 2009/06 Rev. 6/21/2011 SECTION A – PAGE 18
071-33370-400
INTRODUCTION
Folder Motor Cover Removed
Folder Encoder & Sensor
Folder Left Side