Veichi AC310 Service Manual page 37

⚫
To test the 0-10V input voltage function (with the dip-switch set to the voltage input of
AI1 or AI2): use a potentiometer with +10V, AI1 or AI2 and GND connected to each pin of
potentiometer 3, rotate the potentiometer and check C00.16 or C00.17.
If the voltage varies within 0-10V, it is normal. As shown in Fig. 1 (without operation)
and Fig. 2 (when operating at maximum frequency).
Figure 1
⚫ To test the input voltage 0-20mA function (DIP switch to AI1 or AI2 current input): Use
a potentiometer (potentiometer is 500Ω), connect potentiometer 3 pins to +10V, AI1 or AI2,
and GND in turn, rotate the potentiometer, and check C00.16 or C00.17, if the voltage varies
within 0-10V, then it is normal.
(1) Type of fault
Terminal input signal is not normal, signal command action is abnormal
(2) Inspection Methods
In the circuit to damage the inductor L2, L4, and op-amp U20, resistances gear to test
whether the inductor is damaged, damaged resistances will be very large, not damaged
resistances have dozens of ohms, according to the static overhaul mode, the first test of the
above devices whether there are anomalies, there are abnormalities in the replacement of the
device; there is no anomaly and then go to test the other resistances, capacitor parts
AC310 Universal AC Drive Service Manual
Figure 2
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