Handle-to-valve proportional control
SURE Grip Controls' DFA-01/02 provides direct from handle-to-valve proportional control for the operation of industry-standard ratio metric proportional valves.
Designed to withstand potentially damaging electrical surges.
Available from CAN + Automotion Pty Ltd , these non-contact proportional modules or JSP joysticks 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 has 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 Sure Grip Controls’ VV-01 modules and 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 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.
12-Jan-2006