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Duplomatic Oleodinamica designs and produces a complete range of hydraulic components that are suitable for all application sectors of both industrial and mobile fields.
The EWM-P-AA is used to closed loop control of pressure reducing and pressure relief valves. The card integrates also an embedded power amplifier for a direct control of proportional valves.
This card works as a bypass control module. The command value is directly transferred to the control output (pressure valve) and the closed loop compensates only the linearity failures. In most of cases the optimization is possible without any measuring instruments (only one manometer is necessary).
The card allows to set the following parameters: ramp up, ramp down, PID parameters, dither, frequency and amplitude, PWM, maximum and minimum pressure.
The card use the RS232C interface, and is settable via notebook, using the software kit (EWMPC).
| Description | Units |
|---|---|
| Power Supply | 12 ÷ 30 V DC Ripple Included |
| External Fuse | 3.0 A (Medium Time Lag) |
| Current Consumption | 60 A Current for Solenoid |
| Command (Pressure) Value | 0 ÷ 10 V (Rι = 150 kΩ) 4 ÷ 20 V (Rι = 390 Ω) |
| Pressure Signals Accuracy | 0.5 ÷ 2.6 A Stepless |
| Feedback Value | 0 ÷ 10 V (Rι = 150 kΩ) 4 ÷ 20 V (Rι = 390 Ω) |
| Output Current | 0.5 ÷ 2.6 Stepless |
| Sample Time (Pressure) | 1 ms |
| Interface | USB-B (2.0) |
| Electromagnetic Compatability (EMC) 2004/108/EC | Immunity EN 61000-6-2 Emissions EN 61000-6-4 |
| Housing Material | Thermoplastic Polymide PA6.6 Combustibility Class V0 (UL94) |
| Housing Dimensions | 120 (d) x 99(h) x 23 (w) mm |
| Connector | 4x4 Poles Screw Terminals - PE Direct Via DIN Rail |
| Operating Temperature | -20 / 60 °C |
| Protection Degree | IP 20 |
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