Rapid-Air MULTI-STROKE CONTROL User Manual
multi-stroke control
oPerAtinG instructions
RAPID-AIR CORPORATION
4601 KISHWAUKEE ST. • ROCKFORD, IL 61109-2925
Phone: (815) 397-2578
• Fax: (815) 398-3887 • Web Site: www.rapidair.com
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tAble of contents
INTRODUCTION .......................................................................................................................................... pg. 3
BOARD COMPONENTS AND TROUBLESHOOTING .............................................................................. pg. 4
AIR FEED PROGRESSION SET-UP ............................................................................................................ pg. 4
MAINTENANCE ........................................................................................................................................... pg. 5
LUBRICATION AND LUBRICATION OF “O” RINGS .............................................................................. pg. 5
TROUBLESHOOTING .................................................................................................................................. pg. 6-7
MULTI-STROKE CONTROL ELECTRICAL DIAGRAM .............................................................................. pg. 8
MULTI-STROKE CONTROL ILLUSTRATION ............................................................................................. pg. 9
WARRANTY ................................................................................................................................................. pg. 10
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introduction
Multi-Stroke Control Introduction
The Multi-Stroke Control, when
coupled with a Rapid-Air feed,
increases the feed length by up
to 9 times the original feed length
capability.
The control is completely self-contained and requires only 3 interface
points, which are provided on the
outside of the electrical enclosure.
1. A cable connection that should
be connected to the solenoid
of the air feed.
2. A normally closed reset signal
device, to reset the multi-stroke
cycle.
3. An isolated, normally open
contact which is provided for
customer interface of a work
device, such as a solenoid or relay
that can be activated upon
completion of a feed cycle.
Reset Signal Device:
The reset signal device should be
a limit switch mounted on external
equipment.
CAUTION – DO NOT STOP
ON THE RESET SWITCH
The diagram 85500131, illustrates
the proper interface connection
of the switch to the controller at
position (S2).
CAUTION – NO VOLTAGE
SHOULD BE APPLIED TO THIS
CONNECTION
Isolated Normally Open Contact:
At the completion of the feed cycle,
a solid state relay is energized. The
normally open contact provides a
path to allow an external device to
operate. The solid state relay will
remain until the reset switch is
tripped. The contact is rated at
0.5 AMPS/120 VAC.
The diagram 85500131, illustrates
the proper interface connection at
position (S1).
WARNING – THE CONTROLLER
WAS NOT DESIGNED TO
WORK WITH ANY DEVICES
OTHER THAN A FEED PRESS
COMBINATION. IF CONNECTED
TO OTHER THAN A FEED PRESS
COMBINATION, RAPID-AIR WILL
NOT BE RESPONSIBLE FOR
WARRANTY OR INJURY
SUSTAINED BY THIS ACT.
The front of the multi-stroke unit has
(9) components.
1. START/STOP POWER BUTTON:
Depressing the “START” button
activates the unit.
Depressing the “STOP” button
deactivates the unit.
2. STOP/RUN/START SELECTOR
SWITCH:
In the STOP mode there should be
a motion or reset signal recognized
by the circuitry. If the unit is
cycling and the switch is turned to
stop, the cycle in process will
finish before stopping.
In the RUN mode, the multi-stroke
can be started by turning the
selector to start and then
releasing it.
3. FEED STROKES PER CYCLE
SELECTOR SWITCH
The position of the selector switch
determines how many feed cycles
are completed before the solid
state relay is energized to allow
the work cycle to begin. The
minimum cycles is (1) and the
maximum is (9).
4. FEED/CUT DELAY
POTENTIOMETER
The feed rate potentiometer is a
single turn potentiometer. By
turning the knob clockwise, the
cycle time will be shortened
causing more strokes per minute.
By turning the knob counter clockwise, the cycle time will be
lengthened resulting in fewer
cycles per minute. If the rate is
set too high (trying to cycle the
feed at 200 strokes per minute
when the feed is only capable
of 160 strokes per minute) then
severe misfeeding will result.
Cycling the feed too slow will
simply reduce the parts per
minute produced. Once the
best setting is determined, note
the setting for future reference.
There is a formula to calculate the
maximum parts per minute (PPM) for
a given feed.
The formula is PPM=X/(2N-1).
X = The maximum recommended
cycles per minute of the feed.
N = The required number of feed
cycles per part.
Example:
If it is desired to cut a 24” long part,
having the feed adjusted to an 8”
progression, the counter would be set
for 3 progressions and the maximum
recommended number of cycles per
minute is 100. The maximum number
of parts per minute would be
100/(2x3-1) or 20m parts per minute.
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