5
Rev. 1.0
08/12/2023
400-820-9661
STF-4X-ECX Hardware Manual
2 Getting Started
The following items are needed:
• A 24-70VDC power supply, see the section below entitled “Choose a Power Supply” for
helping to choose the right one.
• A compatible stepper motor, please see the section below entitled “Recommended Motor”
• A small flat blade screwdriver
• A PC running Microsoft Windows 7/ Windows 8/ Windows 10(32bit or 64bit) and Microsoft.net
framework 4.0.
• A USB Mini-B cable
• Install the Stepper Suite software
• A CAT5 cable, used to do the daisy-chain connection. It is also used to configure the drive.
• Optional extended motor cable (Sold separately)
• Optional extended encoder cable (Sold separately)
• Optional extended I/O cable (Sold separately)
2.1 Choosing a Power Supply
The main considerations when choosing a power supply are the voltage and current requirements
for the application.
2.1.1 Voltage
The STF drive and motor is designed to give optimum performance between 24~48 Volts
DC. Choosing the voltage depends on the performance needed and diver/motor heating that
acceptable and/or does not cause a drive over-temperature. Higher voltage will give higher speed
performance, but will cause the drive to produce higher temperatures. Using power supplies with
voltage outputs that are near the drive maximum may significantly reduce the operational duty
cycle.
The STF05/10-4X drive extended range of operation voltage can be as low as 18VDC minimum
to as high as 75VDC maximum. When operation below 18VDC, the STF05/10-4X series will
work unstable. The supply input cannot go blow 18VDC for reliable operation, otherwise under
voltage alarm will be triggered. STF05/10 drive will stop working when this alarm is triggered. If a
regulated power supply is used, and that is near the driver maximum voltage of 75VDC, a voltage
clamp may be required to prevent the voltage over 75VDC which will occurs an overvoltage fault.
When using an unregulated power supply, make sure the no-load voltage of the supply does not
exceed the maximum input voltage 75VDC.
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