TD1107AX 7
3.3 Amplifier Settings
The following settings represent a typical set up for a voltage or current signal input operation
scenario. Conditions will vary for other set up scenarios. I min and I max are single turn trim pots.
Use a Phillips#0 screwdriver.
Trim Pot Adjustments Range of Adjustment Factory Setting
Minimum Current
Setting (I-min.) CAPVE-H-5V-2A-5C-2M: 0 to 500 mA
CAPVE-H-5V-1A-5C-2M: 0 to 250 mA
0% (CCW)
Maximum Current
Setting (I-max.) CAPVE-H-5V-2A-5C-2M: 600 to 2000 mA*
CAPVE-H-5V-1A-5C-2M: 300 to 1000 mA** 100% (CW)
CW = clockwise, CCW = Counter clockwise
∗NOTE 1: Range of max. output current is 2 A (maximum output current = minimum current setting + maximum current setting).
** NOTE 2: Range of max. output current is 1 A (maximum output current = minimum current setting + maximum current setting).
Setting the Minimum Current (I-min.)
•Set the minimum current before setting the maximum current.
•Apply minimum input (0 V or control potentiometer at minimum).
•The factory setting for the I-min. trim pot is 0 or fully counter clockwise (CCW).
•If the desired minimum current is greater than 0, adjust the trim pot clockwise (CW) until the
desired current is achieved.
The minimum current setting can be used to take into account the mechanical valve deadband
and provide desired offsets from zero to allow full control within the functional range of the
specific valve.
Setting the Maximum Current (I-max.)
•Apply maximum control (5 V or control pot at maximum).
•The factory setting for the I-max. trim pot is 100% or fully CW.
•Turn the trim pot CCW to adjust the current setting downwards to the desired maximum.
The maximum current setting is adjusted to meet the customer’s working pressure or flow range
to the full scale signal input range. This provides maximum control for a specific application.
4.0 Start Up Procedures:
A typical start up procedure is as follows:
1. Ensure the lid, o-ring, washer and base gasket are correctly in place (necessary for IP65
protection).
2. Ensure that no damage or injury can occur on the machine when the valve is operated.
3. Attach the amplifier to the load.
4. Switch on the power supply to the amplifier and apply a control signal.
5. Adjust the minimum and maximum current to suit the application.
Successful completion of these five steps means the amplifier and load are ready for normal use.
5.0 Operation:
The amplifier ensures a hydraulic proportional valve will function in a manner directly proportional
to the control input. Accurate and repeatable operation is attained. Simple control can be
achieved with a 10K Potentiometer powered by the amplifier’s internal +5 VDC power supply or a
0-5 VDC control signal input. The amplifier performs within the mechanical limits of the
proportional valve. No maintenance of the unit is required.
Specifications are indicative and subject to change. Actual performance will vary depending on the application and
operating conditions. Users should satisfy themselves that the product is suitable for use in the intended application. All
our products carry a limited warranty against defects in material and workmanship. Please refer to our Warranty,
Application Approvals/Limitations and Return Materials Process as described on www.axiomatic.com/service.html.
Form: TD1107AX-07/27/09
