02 SNN^
COMM.
01-SNN.
-
RELAY 2
a
02- SN N. ARE
FOR 2-PRESET UNITS ONLY
INPUT CONNECTIONS
Terminal 6 on TBA
(the first terminal from the left)
is the
'DC OUT'
( 12V)
terminal. This is for sensor supply and can provide up to 100mA
of current. Terminal 5 is the
"COMM." (common)
terminal, which is the
common line to which the sensor and other input commons are connected.
(Do NOT connect relay commons or solid-state output commons to this
point.)
Terminal 4 is the
"CNT. IN" (count input)
terminal. When the sig-
nal at this terminal is pulled low
(zero volts),
a count will be registered.
(See Count Input and Count Rates under the Specifications Section.)
Ter-
minal 3 is the
"UP/DN" (count direction control)
terminal. When this ter-
minal is unconnected, the count direction is "UP". When the terminal is
grounded, the count direction is
'DOWN".
Terminal 2 is the
"PGM. DIS."
(program disable )
terminal. When this terminal is unconnected, the preset
value(s), prescale value (if S9 is UP), decimal point position, and timed
output value(s) can be changed using the front panel buttons.
(Outputs can
also be tested during self-test under this condition. See Self-Test description
for further details.)
When terminal 2 is at a low level
(connected to COMM.),
changing these values and testing the outputs is no longer possible.
Terminal 1 is the
"RMT. RST." (remote reset)
terminal. When this terminal
is at a low level
(connected to COMM.),
the unit will reset, and the outputs
will turn off
(if activated).
As long as reset is low, the unit is held at reset.
When connecting and installing the input wires, the following guidelines
should be followed.
(This is especially true of "electrically noisy" environ-
ments.)
A)
The Input Common may be connected to machine ground (earth) only
at one point, preferably a single, direct connection between a known
good, earth ground and the Input Common Terminal.
B)
Never run count and control signal leads in the same conduit or race
ways with conductors feeding motors, solenoids, SCR controls, heaters,
etc. Ideally, signal wires should be run by themselves in a separate
conduit.
C)
Signal leads within electrical enclosures should be routed as far from
contactors, motor starters, control relays, transformers, and other sim-
ilar components as possible.
D)
When shielded wire is used, connect the shield to the signal common
terminal of the Lynx counter and leave the other end of the shield
unconnected and insulated from machine ground.
POWER & OUTPUT CONNECTIONS
As mentioned before, power and output connections are made to the
bottom terminal block
(labeled TBB),
and the solid-state output connector
(located at the lower right corner of the unit).
Primary power is connected to
terminals 1 and 2
(Marked Power, located on the left-hand side of terminal
block TBB; NOTE: Observe power polarity on DC powered units).
For best
results, the power should be relatively
"clean"
and within the specified
variation limits. Drawing power from heavily loaded circuits, or from
circuits that also power loads that cycle on and off, should be avoided.
Terminals 3, 4, and 5 are used to connect to output relay 1. Terminal 3
is the normally closed contact. Terminal 4 is the normally open contact,
and Terminal 5 is the output relay common. Terminals 6, 7, and 8
(dual
preset only)
are used to connect to output relay 2. Terminal 6 is the
normally closed contact. Terminal 7 is the normally open contact, and
Terminal 8 is output relay 2 common.
The solid-state output connector has three wires
(two wires for the single
preset unit)
coming from the top of the connector housing. The yellow wire
(first wire as viewed from the back of the unit)
is for solid-state output 1
(labeled 01 SNK).
This internally connects to an NPN Open Collector
transistor. The black wire is the common for the solid-state output(s).
This terminal should NOT be used as the common for the input or control
terminals. The blue wire
(dual preset only)
is used to connect to solid-state
output 2
(labeled 02 SNK).
CONNECTIONS
As depicted in the drawing showing the rear view of the Lynx counter, there are two terminal
blocks where all wiring connections are made. Remove the blocks for easy access to the terminal
screws. To remove the block, pull on the back of the block until it slides clear of the terminal block
shroud.
CAUTION: Terminal blocks should NOT be removed with power applied to the unit. For the
solid-state outputs,
a three-pin connector is supplied. NOTE: The solid-state connector housing is
polarized to the body of the bottom terminal block and must be inserted properly.
All the input connections are made to the top terminal block
(labeled TBA).
The power and relay
connections are made to the bottom terminal block
(labeled TBB),
and the solid-state outputs are
connected to the three-pin connector. The input connections will be discussed first, using the
drawing as a guide.
(The input connections are the same for one or two preset counters.)
FRONT PANEL FUNCTION DESCRIPTION
These units employ eight front panel buttons for control and data
entering. The button functions are as described below:
RESET "R": This button resets the counter to either zero or preset,
depending on the mode of operation selected. For this button to oper-
ate, the enable/disable reset button switch at the rear of the unit must
be set to the enable (EN.) position. This button is also used, in conjunc-
tion with the two preset buttons
(one button on the single preset unit),
to
view and change the timed output value. When reset is activated, all
processes are stopped or interrupted (i.e.
outputs turn off, display
is
halted; etc.).
This is the case under any mode of operation, in any data
entry mode.
PRESET "P1" ("P2"): The preset button(s) are labeled, and are the right-
hand buttons of the top two rows, located on the front of the unit.
(For
the single preset unit, the right-most button is the preset button.)
When the
'Pr button is pressed, preset 1 is displayed and the "Preset Enter" mode
mode is accessed.
(See 'To Enter A New Preset Value")
These values
will remain displayed for approximately lOsec. after release of the but-
ton. The preset buttons are also used, in conjunction with the reset but-
ton, to view and change the timed output values.
(See 'To Enter A New
Timed Output Value" section.)
ENTER "E": This button is used in the
"Preset Enter"
mode and in the
'Timed Output Enter"
mode. After the desired value is obtained on the
display, this button is pressed. This enters the value into the internal
processor. This new value, at that instant, is used in the processing of
preset or timed output values.
"E"
can also be used at the end of self-
test to exit self-test.
PRESCALE "PS":
(Available only on the dual preset unit.)
When the
"PS"
button is pressed, the prescale value is displayed and the
"Prescale
Enter"
mode is accessed.
(See 'To Enter A New Prescale Value".)
This
value will remain displayed for approximately lOsec. after release of the
button.
TO
ENTER A NEW PRESET VALUE *
FIRST: Press 'PP
(or "P2; if a two preset unit).
This will display the
respective preset value, and it will remain displayed for approximately 10
sec. after release of the last button pushed.
(At this time, the preset dis-
play mode can be exited, without change, by pressing the 'E" button.)
SECOND: Once the preset value is displayed, changing the digit value can
be done by pressing the button directly beneath the digit to be changed.
Each time the button is pressed, the digit will increment by one. Also,
pressing and holding the button down will continuously scroll the digit
from 0 through 9, then back to 0 again. When the desired value for that
digit is reached, release the button. Do this for all the digits to be
changed.
THIRD: Press the
"E" (Enter)
button to enter the value into the unit's
memory.
AS SOON AS
the 'E" button is pressed, this new value is used
as the operating data. This means, if the preset value is entered, and the
old or new value has not been reached, the new value will be used with-
out process disruption
(Preset on the fly).
If the 'E" button is not pressed
within lOsec. after the last digit has been changed, the value will dis-
appear
(go back to normal display mode)
and the unit will continue to
operate on the previous value. During the displaying, changing, and
entering of a new preset value, all functions of the unit are operational
(i.e.
counting, resetting outputs firing, etc.)
NOTE: For RTP modes of operation, the preset (preset 2 for dual preset units)
will determine the "Start Count" value of each cycle.
• To enter any new data into the Lyn.; the "PGM. DIS." terminal must be de-
activated (open or at + 5VDC maximum).
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