The ADN 402 has been developed as a digital controller incorporating a valve amplifier for proportional valves with two magnets
Valve output stages function with fast de-excitation, with the result that the magnet current is adjusted to 0 in approx. 3–4ms.
Extremely suitable for control tasks in the 0–30Hz frequency range, and the module has therefore been equipped with a triple-controller cascade
Input sensor system equipped with interchangeable sensor modules
Sensor input modules are equipped with a second-order low-pass filter
Setpoint can be specified either analog or digital using the CAN bus
Alarm signalization is effected via a separate output
Equipped with six opto-decoupled inputs
All settings can be effected using the ADN configurator via an RS232 interface connected to a PC or laptop computer

Type		Controller and valve amplifier
Use		Proportional valves with two magnets
Supply voltage		24V DC (22...28 V DC)
PWM (valve current)		9.7kHz with fast de-excitation and short-circuit monitoring
Inputs		6, opto-decoupled, of which 1 x Enable, 1 x Ramp OFF and 4 x Setpoint (internal)
Output		1 x 24V/100mA
Dither generator		Selectable 50 to 150Hz, amplitude 0 to 10%, referred to the current selected
Measuring sockets		The valve current for the A and B magnets can be measured at 1V/A on the two measuring sockets
Temperature range		-20°C...+60°C
Sensor modules		+/–10V, 12mA +/–8mA, 4–20mA 0–10V, 7.5V +/–4V Change of sign for the controller outputs, the sensor inputs and the setpoint-sensor output
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