Servo interfacing, Servo interfacing explanation – Rapid-Air SERVO FEED: 100C, 100D series User Manual
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A. TAUT STOCK INPUT
(J52)TB1-6)
This is a normally open contact from
a switch or device that monitors the
loop of material prior to the servo
feed. When the material reaches a
point that it trips the switch, a taut
stock has been reached. This input,
when received, immediately drops
the automatic which stops the feed
in progress. The material should be
repositioned in the die before
restarting the automatic sequence
as the progression was lost when the
taut stock occurred. This input also
could be used as a “No Stock” switch
that would monitor whether or not
there is material available to feed.
B. ENABLE INPUT
(J4)PIN 5 & 6)
The enable input is shipped from the
factory, jumpered, so that the Pac-Sci
unit is ready to work after the initial-
ization procedure is complete. If it is
desired that the servo controls are not
functional until other equipment or
safety source is activated before the
servo can function then a normally
open contact can be interfaced to this
input. If at any time during the feed
cycle the input changes state then
the feed will stop at this position. If
feeding stock, the referance will be
lost and the stock will have to be
manually repositioned to the correct
location. The automatic cycle will be
dropped and have to be restarted.
C. ENABLE OUPUT
(J52)TB2-15)
This output must be tied to a solid
SERVO INTERFACING
Servo Interfacing Explanation
state relay to interface to the ouside
world. The solid state relay must
have a D.C. coil and should have a
rating of 3-30 VDC. The Rapid-Air
#69100165 is recommended for this
application. This output is high when-
ever the enabled input is activated.
D. END OF FEED OUTPUT
(J52)TB2-13)
This output must be tied to a solid
state relay to interface to the outside
world. The solid state relay must
have a D.C. coil and should have a
rating of 3-30 VDC. The Rapid-Air
#69100165 is recommended for this
application. This output goes high
at the end of every feed and stays
high for programmed amount of time
before going low. To program the
time, with the menu display on, push
the period on the keypad - follow the
instructions and enter the time in
milli-seconds. The time entered will
add to the total feed cycle time and
if programmed to last longer than the
time from the actual end of feed and
the actual tripping of the feed switch
then the program will not see the feed
switch being tripped, you will then get
two hits per feed.
E. AUTOMATIC OUTPUT
(J52)TB2-11)
This output must be tied to a solid
state relay to interface to the outside
world. The solid state relay must
have a D.C. coil and should have a
rating of 3-30 VDC. The Rapid-Air
#69100165 is recommended for this
application. This output goes high
whenever automatic is selected on
the program panel. Any faults will
cause the automatic output to go low.
F. STANDARD PROGRAM -
DATA INSTRUMENTS INTERFACE
(J52)TB1-14)
With the jumper in place, the
standard program is active. Remove
the jumper, recycle power and the
Data Instruments program is active.
Only the manual mode will work
with the keys at this time.
G. KEYPAD AND DISPLAY
INTERFACE (RS232 PORT)
The keypad/display is the interface
between the operator and the resi-
dent program. The Pacific Scientific
drive is purchased with a great many
capabilities, none of which can be
used unless a program is written to
utilize these capabilities. Rapid-Air
put a great deal of time into making a
program that is user friendly and yet
gets the job done efficiently. We took
all the questions and constructive
criticism and came up with a program
that would cover all the applications,
yet be easy to interface and program
by a customer. If an operator reads
the programming procedure in this
manual and then reads the screen
parameters listed as they are dis-
played and acts on them by inputting
data as needed, the servo can be up
and running in a very short time.
1. Select a job number.
2. Input or review parameter for
that job number.
3. Thread up material in manual mode.
4. If properly interfaced, go into
automatic mode.