Red Lion LEGEND - Manual (Page 59)

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The Legend is set to the quadrature X2 mode which
i n c r e a s e s t h e p u l s e s t o 1 2 0 0 P P R . T h i s g i v e s a
measurement resolution of 1/100 of an inch. The five
Presets are programmed with the proper values and the
solid state outputs control pilot relays that control the
actuators. As the material passes each station, a signal
is sent to the proper equipment and the process is
performed. Also, the outputs are programmed so that if
a power outage occurs, they will save the state that they
were in at power down.
The sixth output is assigned to rate so that if the rate
drops below a predetermined value, the output will
activate a warning indicator.
APPENDIX “C” APPLICATION
A process performs five different procedures to a piece of
raw stock at five different locations. The Legend series LGM
with six presets and six solid state outputs is used for this
application.
The raw stock comes in ten foot sections and requires five
various operations to be performed at 9.00", 23.00", 72.00",
83.00", & 111.00". A rotary pulse generator (RPGB) with a 600
pulse per revolution (PPR) quadrature output is coupled to a 1
foot circumference wheel. A quadrature sensor is specified
because the stock must be reversed after stations #1 and #4. This
allows the Legend to keep track of true position.