The DFA-01/02 provides direct from handle to valve proportional control™ for the operation of industry-standard ratio metric proportional valves. You can now use Sure Grip Controls' non-contact proportional modules or JSP joysticks to directly control proportional valves such as the Sauer Danfoss™ PVG 120 and PVG 32 series proportional valves.

The DFA-01/02 is installed as an in-line module on a Sure Grip control handle or joystick wiring harness. The operator will have bi-directional proportional control of Danfoss™ proportional valves using a proportional rocker, two proportional flex pushbuttons or a JSP series joystick. (the DFA-01 version mates with our VV-01 modules, the DFA-02 version mates with the JSP joystick.)

The DFA-01/02 provides the drive signal required by the valve, as well as a high-power valve enable signal whenever the drive signal is off neutral.

The heart of the DFA-01/02 is a microcomputer which constantly monitors the machine's operating voltage, generates the proportional valve drive signals and reads the input devices. Built-in software safety features will cause a safe shut-down of the valve should there be a failure in the proportional input devices, or in the wiring between the handle and the module, or if there is a computer malfunction. The hardware is designed to withstand potentially damaging electrical surges (common on mobile hydraulic machinery) and to survive wiring faults and installation errors.

The DFA-01/02 also includes factory programmed ramping to help reduce pressure spikes in the hydraulic system.

DFA Board Features
+ Convert signal from two PC-V V modules or our JSP
+ joystick to: PVG Danfoss Valves
+ Installed in-line with the handle wire harness
+ No extra wiring
+ Electrical protection built in
+ Self calibration for center voltage
+ Switched enable output when off neutral
+ On-board 5 VDC power supply for PC-V V modules or
+ JSP joystick
+ Operates on 12 or 24 VDC machines

DFA Board Specifications
+ Operating voltage: 10-28 VDC
+ Wire terminals: solder post
+ Ramp rate (factory): 300 ms
+ Enable output: 3 amps max.
+ Signal output (neutral) 50% machine voltage +/- 2%
---------------------(max) 80% machine voltage +/- 5%
---------------------(min) 20% machine voltage +/- 5%
+ Case size: 4” x 1” x 1”
+ Operating temperature: -40 to 70 Celsius