EC20200 -- GENERAL INFORMATION

APPLICATION:
Proportionally control the speed of hydraulic motors and cylinders.

DESCRIPTION:
Easy to use and versatile the EC20200 simplifies valve control and system design. It is built with high quality long life components that are designed for use in harsh environments. The EC20200 is a perfect compliment to the Brand EFC and LEFC flow controls. Other flow controls meeting the appropriate specifications may be used as well.


EC20200
EC20200 -- GENERAL SPECIFICATIONS
Voltage Supply 12-30 VDC
PWM Output Current 2.0 Amps Max Continuous
PWM Output Description PWM , Pulse Width Modulation, 0-100% Duty cycle
PWM Output Frequency 107Hz +/- 5 Hertz
Switched DC Output Current 2.5 Amps Max Continuous Each Output (A and B)
Switched DC Output Voltage Voltage Out = Voltage Supply – 0.7 Volts
Environmental Ratings IP66 / NEMA 4
Operating Temperature -40°C - 85°C (-40°F - 185°F)
Storage Temperature -40°C - 85°C (-40°F - 185°F)




EC20200 -- ADJUSTMENTS
Minimum output or zero setting Clockwise rotation increases minimum output
0 - 1.5 Amps
Maximum output Clockwise rotation increases maximum output
0.05 - 2 Amps
Maximum output will always be 50 mA greater then the minimum output
Ramping Down, or Fall Time Clockwise rotation increases ramp time
0.1 - 12 Seconds
Ramping Up, or Rise Time Clockwise rotation increases ramp time
0.1 - 12 Seconds

ADJUSTMENT PROCEDURES:

Adjustments are made by turning a trim pot screw. The trimmers are 25 turn, end to end devices. The trimmers have a built in slip clutches so over rotations do not damage them. It may be necessary to turn the adjustment screw several turns to observe a change in output. Start by adjusting the min output, and then adjust the max output to the desired level. The best way to fine tune adjustments is to observe the function response or speed. It is important to make adjustments in the following order.

1. Minimum output: Start by setting the master Potentiometer or input signal to zero. Turn the trimmer clockwise until the function begins to move. Now turn the trimmer back counter clockwise, one full rotation past the point of any visible movement.

2. Maximum output: Start by setting the master Potentiometer to the 100 position on the dial. Turn the trim pot counter clockwise to decrease function speed. Turn the trim pot clockwise to increase function speed. Function maximum speed will be limited to the max flow capabilities of your hydraulic system. Do not rotate the trim pot past the point of an observable increase in function speed.

3. Ramp up: This feature changes how quickly the valve can open. Clockwise turns increase the amount of delay. Counterclockwise turns decrease the amount of delay.

4. Ramp down: This Feature changes how quickly the valve can close. Clockwise turns increase the amount of delay. Counterclockwise turns decrease the amount of delay. Use discretion when making this adjustment, this will affect how quickly your function stops.



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