YASKAWA JUSP-MD D01A Series User Manual page 75

• Precaution when host controller uses open collectors with customer-supplied power.
The multi-winding drive unit may malfunction depending on the relationship between
the pull-up voltage (Vcc) and the pull-up resistance (R1).
Before wiring, confirm that the specifications of the host controller satisfy the values
shown in the following table.
Pull-up voltage (Vcc)
24 V
12 V or less
5 V or less
Circuit example of open-controller output
Host controller
Vcc
R1
i
Pull-up
Tr1
3.5 Examples of Connection to Host Controller
Pull-up resistance (R1)
1.8 kΩ to 2.7 kΩ
820 Ω to 1.5 kΩ
180 Ω to 470 Ω
Multi-winding drive unit
150 Ω
4.7 kΩ
V F
V F = 1.5 V to 1.8 V
3
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