Co. LTD
M24020100321EN
Functional Description
Supply Voltage
UIM240xx controllers accept a wide range input voltage from 12 to 40VDC. (UIM24002
accepts 10~35VDC) In general, higher supply voltage improves motor performance under
high speed situation, but also increases the power loss and temperature raise.
Adjust Output Current
UIM24002 / UIM24004 / UIM24008 are capable of providing 2A / 4A / 8A per phase
maximum output current respectively. In specific application, the peak output current
needs to be adjusted to meet the rated motor current. A trimmer (potentiometer) is
provided to serve this purpose at the bottom of the controller, as shown in the following
figure. Measuring the mapped voltage (Va) when tuning the trimmer provides a easy way
to set the output current.
For UIM24002, a mapped voltage of 0 - 4V proportionally represents 0 ~ 2A.
For UIM24004, a mapped voltage of 0 - 4V proportionally represents 1.5 ~ 4A.
For UIM24008, a mapped voltage of 0 - 4V proportionally represents 3.0 ~ 8A.
Please note that the controller needs to be powered before the mapped voltage Va can be
measured. (The motor is not required to be connected at this time.)
B‐ B+A+A‐
BottomSide
Voltmeter
10~40VDC
DC+
DC‐
Trimmer
MappedVoltage
Va
Note: Va exceed 4V will be internally clamped to 4V.Va higher than 4V
willincreasethepowerconsumptionandtemperature.
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