Rapid-Air RAPID LIGHT LOOP: RLL - Manual (Page 3)

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The interface board contains a Payout/Rewind switch and user adjustable Max. output
and Jog speed potentiometers. Refer to the adjustments section prior to changing
these setpoints. The RLL is factory set for (Payout) mode and will send a 6 VDC
output to the controlled unit when the material is at the top of the loop. All loop control
functions are fixed and never need adjustment. See the adjustment section prior to
selecting the Rewind mode. There is one user replaceable fuse.
Power down prior to any service to the fuse or while performing any maintenance.
Qualified electrical personnel should perform service to this equipment. 115 VAC is
present on this PWB.
CAUTION:::
JOG PUSHBUTTON:
The Jog Pushbutton is used to assist the operator in the initial thread up of material.
The jog speed is adjustable and can be tuned to match the needs of the specific
operation. For location of this potentiometer, refer to the adjustments section.
CABLE ASSEMBLY:
The cable assembly was designed to make the installation of the RLL to a Rapid-Air
Reel, Straightener, or Rapid Roll as easy as possible. The power and control
connection is accomplished through one of two types of connectors. Optional adapter
cables are available for the two conversions when required. Contact Rapid-Air for
details or assistance for this and also when interfacing non Rapid-Air equipment.
OPERATION:
PAYOUT MODE:
With the RLL in place and electrically connected to a Reel, Straightener, etc, that is
powered, the RLL is ready for loop control operation. The top light beam (ON), if
interrupted by material will give the full speed signal to the controlled device. The
(Ramp Up) light beam if interrupted by material will give an increase in speed from
previous. The Ramp Down light beam if interrupted by material will give a decrease in
speed from previous. The bottom light beam if interrupted by material will fully stop the
motor. The Ramp Up or Ramp Down and Hold functions are not affected by the full on
or full off functions. In this manner the loop window will be controlled between the
Ramp Up and Ramp Down light beams.
To start thread up, press the jog button. The controlled device will run at jog speed,
paying out material for the operator to work with. With the material held between the
light posts walk material to the controlled device and thread up. The controlled device
will stop when the bottom beam is interrupted by material. The RLL and the controlled
device are now ready to run material.
As the loop depth diminishes the RLL will automatically increase the motor speed
keeping the loop depth fairly constant at 9 to 15 inches above the floor.
OPERATION:
REWIND MODE