Verification
7.3.1.2 Checking Medium Current Range
A. Connect the Load, DC source, DMM, current shunt as Figure 7-1 shows. Use DMM (I)
to measure the voltage that passes through the shunt resistor measurement port, and
get the load current.
B. Select the right range for the current shunt resistor. Press till VFD shows CC
and press to light up the M range LED indicator.
C. Press to enter into CC Mode for setting. Use rotary knob and or to
program the current listed in Table 7-4 .
D. Turn on the DC source and set output voltage to 5V. Set current limit of DC source
larger than the set current of Table 7-4. Press to enable the load and wait for 30
seconds. Then record the shunt current and the front panel displayed readings. The
current of load can be recorded from current shunt = DMM (I) voltage/current shunt
resistor.
Table 7-4
Front Panel Display
Reading
63630-600-15
63640-150-60
63630-80-60
63610-80-20
63640-80-80
E. To set output voltage of DC source and CCM current listed in Table 7-5 for testing
model. Press to enable the load and slowly decrease the dc source voltage until
DMM(V) display reached minimal operation voltage of the Table 7-5 for testing model.
The current of load can be recorded from current shunt = DMM (I) voltage/current shunt
resistor.
Table 7-5
Model
for DC Source
Operation
CCM Current
Setting
Max. Max.
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