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Installation guide
ACOPOSinverter P84 User's Manual 2.10
69
1.3.9 Position of the LED status indicator of the capacitor charge
Before working on the frequency inverter, switch it off and wait until the red LED, which displays the charge level
of the capacitors, is extinguished. Then measure the voltage of the DC bus.
The red LED indicates that the DC bus is under voltage.
8I84T200037.01P-1 to 8I84T201500.01P-1 and
8I84T400075.01P-1 to 8I84T401850.01P-1
8I84T201850.01P-1 to 8I84T204500.01P-1 and
8I84T402200.01P-1 to 8I84T407500.01P-1
Procedure for measuring the voltage of the DC bus.
Danger!
ELECTRICAL SHOCK HAZARD
Read the precautions
see "Before you begin" on page 12
carefully before you perform this procedure.
Failure to follow these instructions can result in death or injury.
The voltage of the DC bus can exceed 1000 VDC. When performing this procedure, use a voltage sensor with
the correct rated voltage.
Measure the voltage of the DC bus as follows:
1. Interrupt the power supply of the inverter.
2. Wait 15 minutes to allow the DC bus capacitors to discharge.
3. Measure the voltage of the DC bus between the PA/+ and PC/- terminals to check that the voltage is less
than 42 V.
For detailed information about arranging the power terminals,
see "Arrangement of the power terminals" on
4. If the capacitors of the DC bus are not fully discharged, contact your local B&R representation (do not repair
the inverter and do not operate it).
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