Red Lion GEMINI 2 - Manual (Page 23)

HARDWARE SET-UP
The application drawing shows how the hardware for this system is to be
connected. The Red (supply), Black (Common), and White (signal) leads of the
RPG Cable are connected to the “DC OUT”, “COMM.”, and “INPUT A”
terminals respectively. The shield of the cable is connected to “COMM.”. The
normally open contact of Relay 1 is connected to the “Speed Increase Control”
and the normally open contact of Relay 2 is connected to the “Speed Reduction
Control”. A “Start” button is used to start up the system and get it “up to speed”,
at which point the Gemini 2000 can take over and control the speed. After
programming is completed, a jumper is placed between the “COMM.” and
“PGM. DIS.” terminals of the unit. This terminal, working in conjunction with
the “Operator Accessible Functions” mode, will prevent accidental changes in
the unit’s operating modes.
The Input DIP Switch position 1 is set to the LOGIC position since an RPG is
being utilized. Position 2 is set to “SNK.”, which provides an internal pull-up
resistor to +12 VDC. (The RPGB has an open collector sinking output.) Position
3 is set to “HI FRQ.” since the input rate will be over 100 cps. Position 4 is set to
“HI BIAS” to provide higher noise immunity. Because Input B is not used, the
settings of Positions 5-7 are all selected as shown to provide maximum noise
immunity. Position 8 is set to “DIS. RST.” to disable the front panel reset button.
For more detailed descriptions of the Input switch set-up, see Appendix “A”.
STEP BY STEP PROGRAMMING OF THE GEMINI 2000
The steps for programming the Gemini should be followed in this order each
time a change is made in a basic parameter of the system. (The preset value, scale
factor value and output time delay value can be changed at any time or in any
sequence, provided the unit is already operating in a valid mode, and an
“Operator Accessible Functions” mode is not preventing this change.)
Refer to the programming section, for instructions in programming function
codes and entering Scale Factor and Preset Values.
STEP 1 - Enter code 41 (Unit Personality), and a mode identifier of 2 for a rate
indicator unit personality.
STEP 2 - Enter code 44 (Number of Count Edges), and enter 1 for single edge
counting.
STEP 3 - Enter code 45 (Scale Multiplier Values), and enter a mode identifier of
1 for a scale multiplier of 1.
STEP 4 - Enter code 46 (Decimal Point and Leading Zero Blanking) and enter 1
for no decimal points and lead zero blanking.
STEP 5 - Enter code 52 (Output 1 Termination Modes) and enter 5 for time delay
operation.
STEP 6 - Enter code 53 (Output 1 Time Delay) and enter a time delay value of
0000.50.
STEP 7 - Enter code 54 (Output 2 Termination Modes) and enter a mode
identifier of 5 for time delay operation.
STEP 8 - Enter code 55 (Output 2 Time Delay) and enter a time delay value of
0000.50.
STEP 9 - Enter code 61 (Right-Hand Dummy Zeros) and enter an identifier of 4
for no right-hand dummy zeros.
STEP 10 - Enter code 63 (Sample Time) and enter a mode identifier of 2 for a 2
second sample time.
STEP 11 - Press “1”. Enter the lower speed limit for Preset 1 which is 000500 for
this application.
STEP 12 - Press “2”. Enter the upper speed limit for Preset 2, which is 000700
for this application.
STEP 13 - Press “3”. Enter the Scale factor for this application which is 1.5875.
STEP 14 - Enter code 66 (“Operator Accessible Functions” mode) and enter a -1
for all Operator Functions disabled. For this application the Scale Factor and
speed limits are fixed and do not require changing. Also there is no need to
reset the Sample time so Reset is locked out. (Note: After this code is
programmed, the “PGM. DIS.” terminal is connected to “COMM.” to
prevent any accidental changes.)
–21–