[https://www.cumark.com.cn/en/down_view-7.html ES9000 High Voltage Variable Frequency Drive Selection Manual]
[https://www.cumark.com.cn/en/down_view-7.html ES9000 High Voltage Variable Frequency Drive Selection Manual]
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[https://www.cumark.com.cn/en/down-13.html Cumark ES350/580/850 Series Firmware Manual (Standard Control Procedure) (2017)]
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[https://parsdrive-co.com/wp-content/uploads/2020/04/parsdrive-inverter-catalog-ES350_580_850-firmware-manual.pdf Cumark ES350/580/850 Series Firmware Manual (Standard Control Procedure) (2017)] (mirror of above)
[https://static1.squarespace.com/static/55181a36e4b05c72e7f6a2a3/t/63f98a438cbb7f331f7badd1/1677298251751/ES560+Manual.PDF ES560 Series Frequency Conversion Drive User Manual]