DART Controls 250G CONTROL Serie Manual Del Usuario página 11

The following is the recommended procedure to set up the -5/-7 option on the 125/250/500 Series:
1) With the 125/250/530 oriented so that trimpots are along the top, adjust Min trimpot to minimum (full CCW) and Max trimpot
to 50%. The voltage is set below the typical motor voltage to make certain the drive is NOT in saturation before setting the -5/-7
board saturation point.
2) Set the Linearity/gain pot on the -5/-7 full CW. This is a 20 turn pot and you should hear a clicking with each turn when fully
up or just count 20 turns.
3) Make certain your motor is connected to +/-ARM output of the drive, the AUTO / MAN switch is in AUTO mode for -7
options, and source power for the control is turned on. (Note: For proper tuning this setup is best done on an unloaded motor.)
4) With power applied and a voltmeter monitoring motor output Vdc, apply 4mA to -5/-7 board. Check voltmeter reading and
adjust the Linearity/gain trimpot, R16, on the -5/-7 board CCW until motor output voltage is less than 0.1Vdc.
5) Now apply 20mA to the -5/-7 board and adjust the Max trimpot to a voltage that is 5 volts (15 volts for the 250G series
controls) above the final desired max motor voltage output. Adjust the Linearity/gain trimpot on the -5/-7 board CCW until the
motor output voltage decreases to the desired max voltage set point.
6) Now, apply 4mA to the -5/-7 board again and adjust the Min trimpot to deadband or the desired minimum motor voltage
output. The deadband point is where you are at 0Vdc and any further increase of the Min trimpot would result in an output to
the motor. Re-apply 20mA to the -5/-7 board and verify max output has not changed. A small adjustment may be needed to the
Max trimpot to reset to desired max output.
7) Adjust 4-20 input to 12mA. If tuned properly the output voltage of an unloaded motor should be within a few volts of ½ output
(based on max output setting above).
-7 option only: With 20mA applied to the -7 in Auto mode, move AUTO/MANUAL switch to MANUAL.
8) In manual mode turn the speedpot full CW, note motor voltage output reading on voltmeter. If not equal to output at 20mA in
Auto Mode, adjust the Balance trimpot on the -7 board (CW or CCW) until the same reading is achieved. The motor output Vdc
should not change more than 1 Vdc when flipping back and forth between AUTO and MANUAL position.
-17B option
Acceleration Time Changes
Standard acceleration is variable from 0.5 to 8.0 seconds with the trimpot. The deceleration is between 0.06 and 0.8 seconds.
This option extends the maximum acceleration so the range is between 0.8 and 20.0 seconds. Furthermore, this option has the
deceleration time equal to the acceleration time, so deceleration range is also 0.8 to 20.0 seconds (depends on Accel setting,
not an independent setting).
USE STANDARD HOOK-UP INSTRUCTIONS
10
Factory Installed Only
Available on all Models