CARPET ROLL MEASURING & CUTTING OPERATION
A typical application requires the control of a motor which winds carpet onto a
roll. The roll length can be one of many standard lengths. An early warning sig-
CARPET
nal is required to slow the motor 10 yards before it is to be stopped. Some
ROLL
orders may require measurement to be made in meters instead of yards. The roll
length setting should be protected against unauthorized changes. The system
should be restarted from a remote location.
A double preset LYNX counter is used to satisfy all of the above requir-
ements. The measurement of the carpet is done by using a double wheeled ver-
LSC
10 PULSES/TD.
sion of the LSC sensor. In this application, the LSCDY2OF was chosen for its 10
pulses per yard output and its durable polyurethane wheels. The red wire
(+12V)
is connected to the
'DC OUT"
of the LYNX; the white wire
(output)
is
connected to the LYNX
"CNT. IN.";
and the black wire
(common)
is connected
to the LYNX
"COMM.".
The LYNX input circuit is set up to accept an open col-
lector output,
"SNK" (DIP switch 1 UP), "HI FRQ." (DIP Switch 2 UP), "HI BL4S"
(DIP Switch 3 UP),
and Front Panel Reset Disabled,
"DIS. RST." (DIP Switch 4
UP).
The LYNX is set up to operate in mode 8,
RESET TO PRESET,
with both
outputs terminating at
MANUAL RESET.
The first preset is set to
"10"
to provide the early
warning signal required by the motor control circuit. The second preset is set to equal the
desired roll length. The prescale is set to equal
"0.10000" (DIP Switch 9 UP)
when measuring in
yards, or to
"0.09144"
when measuring in meters. These programmed numbers are locked in
when the key switch connects Program Disable,
"PGM. DIS."
to
"COMM.". "REMOTE RESET"
is accomplished by connecting the contacts of a pushbutton switch to the
'REM. RST."
and
"COMM."
terminals of the LYNX. The normally open contacts and relay common of Relay 1
are connected to the slowdown control while the normally open contacts and relay common of
Relay 2 are connected to the stop control.
The system operation is as follows: As the carpet is wound onto the roll, the LSC sensor is
producing 10 pulses per linear yard of carpet. The LYNX starts counting down from its preset
value of, for example, 300 yards. With a prescale value of 0.10000, the counter will decrement
once for every 10 pulses, and the LYNX display will indicate the number of whole yards remain-
ing. When the counter has counted down to 10, Relay Output 1 will fire, signaling the motor
controller to start the slowdown process. When the counter reaches "0", Relay Output 2 will
fire, stopping the motor completely. At this time, the operator will manually cut the carpet and
remove the full roll, replacing it with an empty one. The
"REMOTE RESET"
button and the
'MOTOR START"
button are pushed to start the sequence over again. If at any time the carpet
needs to be measured in meters, the
"PROGRAM DISABLE"
key switch is turned to
'ENABLE",
and a scale factor of 0.09144 is entered. The key switch should then be returned to
its normal position. Since this is a count down application, Preset 1 will not have to be changed
while any roll length can be programmed into Preset 2. Preset 1 will always fire 10 yards
(meters)
from the end of the roll.
CARPET MEASURING
MOTOR CONTROL
MOTOR
STOP
MOTOR
SLOW
REM.
RST.
0—
40'-
6 5 4
2 1
1 2 34
5 3
„,.„
7;7';
IRA
PGM.
ODIS.
BBBB
a
1788
ALLAY1
B
ELAY
2
*
I
-
''1
3 4 5 6 7 8
EIEBEIHEu
115
VAC
50/60HZ
1-1
APPLICATION FOR DUAL LEVEL PRESET LYNX COUNTER
ORDERING INFORMATION
MODEL NO.
DESCRIPTION
PART NUMBERS FOR AVAILABLE SUPPLY VOLTAGES
230VAC
12VDC
I
24VDC
115VAC
LNXC1
Lynx Single Preset Counter
LNXC-10-10/A
LNXC-10-20 /A
LNXC-10-30
/A
LNXC-10-00/A
LNXC2
Lynx Dual Preset Counter
LNXC-20-10/A
LNXC-20-20/A
1
j
LNXC-20-30/A
LNXC-20-00/A
•
LNXCC
Lynx Contact Input Counter
LNXC-00-10/A
LNXC-00-20/A
LNXC-00-30/A
LNXC-00-00/A
For Information
&
Pricing on Enclosures
&
Panel Mount Kits, See Section "L" of the catalog or contact your local RLC distributor.
•
For complete details on this version of the Lynx counter, refer to Bulletin No. LNXCC.
A
WED LION
CONTROLS
INTERNATIONAL HEADQUARTERS
20 Willow Springs Circle, York, Pa. 17402 (717) 767-6511 TWX: 510
657
4214 RLC YRK FAX:
(717) 764-0839
EUROPEAN HEADQUARTERS
Cranford Lane, Heston, Hounslow,
Middlesex TW59N0 ENGLAND 01-759-0694 TWX: 24178 FAIRHO
G
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