X9 Maintenance Plug; Power Supply - ABB IRB 6400R Product On-Line Manual

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Troubleshooting Tools

D-sub connector

3.4 X9 Maintenance plug

Supply voltages can be measured at the following points:

There is a 10 kΩ resistor between each power supply line and the test terminal to pre-

vent damage by a short circuit.

ACOK: Follows the AC power input without delay. High (= 5V) when power is OK.

DCOK: Follows the supply unit energy buffer. After power on, DCOK goes high (=5

V) when output voltages are stable.

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