dAX20
I/O Units Bucking

Full handling of power supply to Dasa system Protects the other units in the system Handles different types of safety door-switch signal Safe shutdown for PC Handles hydraulic pump outputs, digital, analog and excavator specific Dedicated outputs for harvester head rotator valve on carrier Extra outputs for "boom extension" or other additional carrier functions Keypads connects pin to pin or via CANbus communication Prepared for external key switch controlled pump signal

General: Weight: 1.7 kg (3.75 lbs) Ambient temperature: operating – 40 to + 70 °C (–40 to 158 °F), storage – 40 to + 85 °C (–40 to 185 °F) Protection class: IP67 (under the condition that all unused connectors are plugged) Voltage supply: 10 – 30 V DC Power consumption: 100 mA (24 V DC) own consumption. Size: 206 × 170 × 66 mm Chassis construction: Aluminum Connectors: 8 pcs Deutsch DTM, 2 pcs Deutsch DT, 2 pcs M12 4-pole female, 2 pcs M12 5-pole female Outputs: Max number of outputs: 6 Output current range: 0 – 3000 mA (1 mA resolution) Ripple frequency (Dither Freq.): 25 – 500 Hz (configurable in the programming tool) Ripple amplitude (Dither Ampl.): 0 – 50% (configurable in the programming tool) PWM frequency: 5 kHz (fixed) Max load for the unit in total: 20 A The outputs are pulse width modulated (PWM) at a high frequency (5 kHz). This frequency is sufficiently high for loads to sense the voltage as DC. This frequency is modulated in turn at a lower frequency 25 – 500 Hz, to simulate a superimposed sine curve, the amplitude is adjustable. The unit can detect short circuit and open connection on the outputs.The outputs can also be configured as digital outputs, meaning logical 1, 100% PWM-duty cycle and 0, 0% PWM-duty cycle. Digital outputs: Max number of outputs: 6 Max current: 3 A Inputs: Number of analog/digital inputs: 45, 0 – 24 V (Resolution 10 mV) Digital inputs: Transition level: 3.5 V