Electrical Installation - Beckhoff AX8000 Series Manual

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Electrical installation

Danger to life due to high voltage on the DC link capacitors of the
servo drive AX8000!
The DC link capacitors RB+ and RB- and the test contacts DC+ and DC- on the
supply, axis and option modules can carry life-threatening voltages of ≥ 875 V
Take the following measures to avert danger:
• After disconnecting the servo drive from the mains supply, wait until the voltage has
fallen below 50 V
• Measure the voltage on the test contacts properly.
• Secure the work area properly and wear the PPE.
Risk of injury through electric shock!
Injuries can be sustained through electric shock during the mounting and commissioning of the AX8000
multi-axis servo system.
The installation may only be carried out by trained and qualified technical personnel who are well-versed in
electrical and automation technology. Furthermore, the national accident prevention regulations must be
adhered to.
Take the following measures to avert danger:
• Before starting work, read the section For your safety [} 14] carefully.
• Place the electrical environment (servo drive, control cabinet, etc.) in a safe, voltage-free state.
ð Remove all relevant mains fuses.
ð Turn off the main switch and secure it against being turned on again.
• Put up a warning sign. Wear personal protective equipment (PPE).
• The control and power connections for the motors may be live, even if the motor is prevented from ro-
tating by the internal brake.
Max. DC link capacitance of the AX8000 multi-axis servo system:
Each module has a specified DC link capacitance. When the mains are first connected, the supply module
loads the whole DC link.
For planning the drive system note the max. DC link capacitance:
Drive system up to 240 VAC supply: 16725 µF
Drive system up to 480 VAC supply: 4226 µF
Example at 400 VAC:
1 x AX8640-0000 = 675 µF + 10 x AX8206-0000 = 1350 µF + 1 x AX8810-0000 = 1755 µF
Total capacitance = 3780 µF = OK
Connection of the protective earth conductor (PE) to the AX8000 multi-axis
servo system!
Potential equalization of the entire system must be carried out in order to avoid interference
(EMC) and personal injuries.
Each servo drive must be connected via the earthing bolts on the device according to IEC
60364-4-41:2005 and DIN VDE 0100-410:2007-06.
Special features in a drive system:
In a drive system, the individual components of the AX8000 multi-axis servo system must
be connected via the earthing bolts. In addition, a standard-compliant PE connection must
be installed on the start and end modules of the system.
Multi axis servo system AX8000
DANGER
. Only then is it safe to work.
DC
WARNING
CAUTION
CAUTION
Version: 1.6
Electrical installation
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DC
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