Service manual

• 4. The Transfer conveyor will index in response to the Dump command. If
the package that was placed just before the exit sensor stops at the
discharge end of the Transfer conveyor the interrupt is being seen by the
control card. However if the document is throughout the end of the
Transfer conveyor then the interrupt is not being seen by the control card.
Note: The Interrupt signal enters the Control card CPU-186 at header J9.
The signal comes from J10: a 50-pin, in-line ribbon cable header.
E.4 Setup of Demand switch
Demand switch on/off timing is critical. The setup of this timing permits the
420T to achieve a good interface to the Inserting machine.
The Demand switch should turn on (contacts closed) when the Gripper arm
is approximately perpendicular to the deck of the Inserter. The Demand
switch should then turn off (contacts open) as the Gripper arm completes it’s
backwards motion and starts moving toward the Transfer conveyor.
420T V6LT OPERATOR & SERVICE MANUAL ISSUE 2009/06 Rev. 6/21/2011 SECTION E – PAGE 134
071-33370-400
INTERFACE TO INSERTING EQUIPMENT
Demand Switch Adjustment and Setup