Product Description
Specifications
| Part number | EWM-A-SV/11E110 | Brand | Duplomatic MS |
| Amplifier type | Analogue servovalve amplifier | Series | 11 |
| Command signal | ±10 V (input resistance 100 kΩ) | Power supply | 18–30 V DC, ripple included |
| Output current setting | 110 mA at 100% command | Configurable output range | 10–300 mA in 10 mA steps |
| Output current regulation | Closed-loop current control | Current consumption | 400 mA |
| Dither frequency | 100 or 250 Hz, selectable | Dither amplitude | 0–15% of nominal current |
| Offset adjustment | ±6.5% | Auxiliary supply | ±10 V, maximum 10 mA |
| Mounting | DIN EN 50022 rail | Dimensions (W × H × D) | 23 × 99 × 120 mm |
| Protection | IP20 | Ambient temperature | 0 to +50 °C |
| Connections | Four 4-pole screw terminal blocks; PE via DIN rail | Availability | On order |
EWM-A-SV/11E110 Duplomatic analogue servovalve amplifier
EWM-A-SV/11E110 is a DIN rail amplifier for hydraulic servovalves requiring a bipolar current command. It converts a ±10 V analogue reference into a regulated current output. The output polarity follows the input polarity, while the internal current loop compensates for changes in supply voltage and solenoid resistance within the operating limits.
Current configuration
This execution is ordered with a nominal output setting of 110 mA at 100% command. Internal DIL switches select output settings from 10 to 300 mA in 10 mA increments. Load resistance limits the usable current; check the manufacturer's load/current curves for the selected servovalve.
Adjustment and installation
Dither is selectable at 100 or 250 Hz, with amplitude adjustable from 0 to 15% of nominal current. Offset adjustment is ±6.5%. Auxiliary ±10 V outputs can supply an external reference potentiometer. Hardware switches and trimmers are used for configuration.
Install inside a protective metal control cabinet and follow the manufacturer wiring instructions. Match the valve's rated current, coil resistance and connection arrangement before ordering. The internal current loop regulates electrical output; machine position or pressure control requires the appropriate external controller and feedback.
Supply and documentation
IMPEX CONNECT supplies EWM-A-SV/11E110 on order. Download the series 11 datasheet for selection, electrical connections and commissioning details. The manufacturer photograph shows the series 10 housing; the catalogue states that mounting dimensions remain unchanged within series 10–19.