Veichi AC310 - VPN Detection and Maintenance

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AC310 Universal AC Drive Service Manual
3.8 VPN Detection and Maintenance
C50 10NF/0402
Red pen
VPN
VPN-IN
Black pen
GND1
Voltage range）
T2 model: Bus voltage 579V
corresponds to 5V
T3 model: bus voltage 1000V
corresponds to 5V
DSP Input Voltage Range -
0.3V to 4.6V
1. If the VPN consistent unchanged, the power board voltage detection circuit is abnormal, test
the power board VPN detection circuit.
2. If the VPN-IN voltage is abnormal, then the VPN input signal circuit failure, common failure
is U4 TL084IDR damage, replace the device in the test.
12
12
10
1
10