EC0004A -- GENERAL INFORMATION

Weight, fully assembled 0.151kg (0.332lb.)

EC0004A -- INPUT SPECIFICATIONS
Potentiometer
Wiper Input Impedance	10K Ohms
Wiper Input range	0-10V
Potentiometer guidelines
Resistance	2K-10K Ohms
Minimum Power rating	1/8th Watt
0-10 Volt Input	Terminal block 2, Pin 9
Input Impedance	10K Ohms
Step response	Output current will equal: ((Input voltage x 0.1) (max current - min current)) + (min current) For every volt of input, output will change 1/10 its full range.
0-5 Volt Input	Terminal block 2, Pin 10
Input Impedance	10K Ohms
Step response	Output current will equal: ((Input voltage x 0.2) (max current - min current)) + (min current) For every volt of input, output will change 1/5 its full range.
4-20mA Input	Terminal block 2, Pin 11
Input Impedance	250 Ohms
Step response	Output current will equal: ((Input current - 4mA) (0.0625) (max current - min current)) + (min current) For every milliamp of input, output will change 1/16 its full range.
Enable Input	When Enable is left open (high) the unit is operational. When the enable line is connected to ground (low) the board output immediately goes to 0 Amps.
Impedance	Greater than 1M Ohm
High state EN pin voltage	1.04V +/- 0.1V, Reading taken with a 40M Ohm Load
Source current while pulled low	5.11uA
Ramping Enable Input	When Enable is left open (high) the unit is operational. When the enable line is connected to ground (low) the board output ramps down to the minimum output setting at the rate set by ramp adjustments.
Impedance	5.444K Ohms
High state REN pin voltage	5.98V +/- 0.15V Reading taken with a 40M Ohm Load
Source current while pulled low	5.11uA
EC0004A -- 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 50mA 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 PROCEDURE:
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.

ENABLE INPUTS:
The Enable Inputs can be used to turn the controllers output on and off, without having to switch on/off the main power source. The EC0004A cards are supplied with two unique types of Enable inputs, EN and REN. When the EN line is switched to ground the control will go into sleep mode. It will be as if the controls power source has been turned off. When the EN line is switched back to its normal state, open to ground, the control output will again respond to user input. A soft start can be achieved using the controllers Ramp Up adjustment. The Ramping enable input, REN, allows for soft start and soft stop enabling. The REN input is also activated by being switched to ground. When the REN is activated the control will respond as if the user input signal has been turned off and the controls output will ramp down to the set minimum output value. When the REN input is returned to its normal state the control output will ramp up to the output level that corresponds with the user input signal. Soft start ramp and Soft stop ramp times are set using the onboard trim pots that are labeled UP and DOWN.

TYPICAL SYSTEM CONFIGURATIONS:

Note: Inputs are additive when two or more are used simultaneously. Other configurations are possible, contact factory for more information.

Contents ©2003 BRAND HYDRAULICS. All Rights Reserved.

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