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Section Assemby
Installation Instructions
Conveyor Drive
Standard Single Speed Conveyor Drive
Variable Frequency Drive (VFD) Conveyor Drive Motor
There are two conveyor drive designs.
Therstisthestandarddrivecomprisedofa
gear box, drive belt motor and chain connected
to the conveyor drive shaft.
The second design is variable speed solid-state
electronic speed control, a variable speed motor
and a chain connected to the conveyor drive
shaft.
The conveyor drive is equipped with anti-jam protection and a reversing switch if an object
becomes jammed in the conveyor. This anti-jam mechanism shuts the conveyor drive off to
prevent damage to the conveyor belt. The anti-jam switch is adjusted at the factory and should not
require adjustment.
Anti-jam Swith Operation
The anti-jam switch assembly consists of a base mounting bracket, a limit switch with a mounting
bracket, and a spring loaded tensioner arm with a sprocket. A reverse jog switch button is always
used in conjunction with the anti-jam switch. The tensioner arm with the sprocket is positioned on
the drive side of the drive chain.
When a jam occurs, the drive chain tightens, causing it to straighten changing the position of the
sprocket attached to the tensioner arm. When the sprocket position changes, the tensioner arm
rotates away from the button on the anti-jam switch causing it to open.
When the switch opens, all power to drive motor is disconnected stopping the forward motion of
the conveyor. The drive will not work in the forward direction as long as the anti-jam switch is
in the open position.
Beginning with S/N J11062899 and above
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