Red Lion GEMINI 2 - Manual (Page 17)

HARDWARE SET-UP
The application drawing shows how the hardware for this system is to be
connected. The Red, Black, and White wires of the LMPC are connected to the
DC OUT, COMM., and INPUT A terminals respectively. The shield of the
LMPC cable is also connected to COMM. A Remote reset button is connected
between the RST. and COMM. terminals. After the programming is completed, a
jumper is connected between PGM. DIS. and COMM. terminals of the Gemini
2000. This terminal, in conjunction with the “Operator Accessible Functions”
mode, will prevent accidental changes in the units operating modes. The
Normally Open contact of Relay 1 is connected to the slow down actuator, and
the Normally Open contact of Relay 2 is connected to the motor control.
DIP switch 1 is set to the LOGIC position. This allows Input A to function as the
count input. Switch position 2 is set to SNK. (current sinking), which provides an
internal pull-up resistor to 12 VDC. Position 3 is set to HI FRQ. because of the high
count speeds involved. Position 4 is set to HI BIAS for higher noise immunity.
Since the Gemini 2000 will be counting down, Input B will be used as the direction
input which will be fixed. To count down, Input B must be held low. To do this,
switch position 5 can be set in the SRC. position which connects a 3.9 K pull-down
resistor at Input B to COMM. The positions of switches 6 and 7 are set, as shown, to
provide highest noise immunity. Switch position 8 is set to RST. EN. to allow the
front panel reset of the Gemini 2000 to operate.
STEP BY STEP PROGRAMMING OF THE GEMINI 2000
Refer to the programming section for instructions on programming function
codes and entering Scale factor and Presets.
STEP 1 - Select function code 41 (Unit Personality). Select and enter an
identifier of 1 if it isn’t already. This sets unit personality to a counter.
STEP 2 - Enter function code 43 (Input A & B Response Modes), and enter a
mode identifier of 2 (A = CNT, B = UP/DN).
STEP 3 - Enter function code 44 (Number of Count Edges), and enter a 1 for
single edge counting.
STEP 4 - Enter function code 45 (Scale Multiplier Values), and enter a mode
identifier of 3 for a scale multiplier of 0.01.
STEP 5 - Enter function code 46 (Decimal Point & Leading Zero Blanking), and
enter a mode identifier of 1 for no decimal points with Leading Zero Blanking.
STEP 6 - Enter function code 51 (Reset Modes), and enter a mode identifier of 2
for Manual reset to Preset 2. This mode was chosen to allow set-up time for a
new roll or take-up spool.
STEP 7 - Enter function code 52 (Output 1 Termination Modes), and enter a mode
identifier of 3 (Terminate at Start of Manual Reset). Output 1 is the slow down
output which once activated should remain so until the unit is reset for start up.
STEP 8 - Enter function code 54 (Output 2 Termination Mode), and enter a mode
identifier of -3 (Terminate at start of Manual Reset, reverse phase operation).
This mode was selected so that when the system is powered up, the relay
would be in the open condition which is motor drive off. To start the process,
the Reset button is pushed which would close the Output 2 Relay (turn on
motor drive) and would stay closed until 0 is reached, at which time it would
open (turn motor drive off).
STEP 9 - Enter function code 61 (Right Hand Dummy Zeros), and enter a mode
identifier of 4 for no Right Hand Dummy zeros.
STEP 10 - Press 1 and then enter the desired slow down value (500 is used in this
application).
STEP11-Press2andenterthetotallengthofmaterialtobeprocessed(10,000feet).
STEP 12 - Press 3 and enter a scale factor value of 4.1667.
STEP 13 - Enter code 66 (Operator Accessible Functions Modes) and enter a
mode identifier of 2 (Presets and Reset Enabled). When the “PGM. DIS.”
terminal is connected to “COMM.”, the only changes that will be possible are
resetting the unit and changing the presets.
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