LEESON SCR Thyristor Motor Control - Manual (Page 21)

15 Installation SPEEDMASTER™ OPERATION MANUAL
WIPER
CW
W
SPEED ADJUST
POTENTIOMETER
INSULATING DISK
PANEL
STAR
WASHER
NUT
MOUNT THROUGH A 0.38 IN. (10 MM) HOLE
Figure 8. Speed Adjust Potentiometer
On chassis drives, install the circular insulating disk between
the panel and the 10K ohm speed adjust potentiometer. Mount
the speed adjust potentiometer through a 0.38 in. (10 mm) hole
with the hardware provided (Figure 8). Twist the speed adjust
potentiometer wire to avoid picking up unwanted electrical noise.
If potentiometer leads are longer than 18 in. (457 mm), use
shielded cable.
All cased drives come with the speed adjust potentiometer
installed.
Speed adjust potentiometer
Warning
Be sure that the potentiometer tabs do not make contact
with the potentiometer enclosure. Grounding the input will
cause damage to the drive.
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