Dc Link (External Dc Link-Connection Currently Not Permitted) - Beckhoff AX8000 Series Manual

Electrical installation
7.3.4

DC link (external DC link-connection currently not permitted)

Destruction of the multi axis servo system AX8000:
An "external" DC link group (e.g. AX5000 with AX8000) is currently not permitted.
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.
X01 – DC link on AX8620
Infographic Terminal
point
n.c.
R +
B
X02 – DC link on AX8640
Infographic Terminal
point
DC -
R +
B
44
NOTE
DANGER
. Only then is it safe to work.
DC
Connection Max. wire cross-section
not used
Brake resistor +
(DC link voltage DC
+)
Connection Max. wire cross-section
DC link -
DC link +
Version: 1.6
2
6 mm (AWG 8)
2
16 mm (AWG 6)
Multi axis servo system AX8000
.
DC
Tightening torque
0.5 – 0.6 Nm
(4.4 – 5.3 lbf in)
Tightening torque
1.2 – 1.5 Nm
(10.6 – 13.3 lbf in)