Beckhoff AX8000 Series Operating Instructions Manual page 57

Energy management
9.1.1
Control cabinet structure
9.1.2
Drivetrain
9.1.3
Version: 1.1
If the supply network is impaired due to high voltage fluctuations,
you must consider the specifications of the servo drive and the
speed range of the servo motor. Observe the upper limit value of the
wide voltage input on the AX8000.
Check whether the lowering of the speed due to lacking voltage is
permissible.
With servo motors you can use the field weakening as a remedy. If
the supply network does not correspond to the specification for the
operation of the servo drive, then isolating transformers, mains
chokes, mains filters or other measures must be added.
This system operates in a drive system with a common DC link and
a commonly used internal or external brake resistor. In the case of
already existing drive systems, you can determine the utilization rate
of the brake resistor with the aid of the diagnostic system and trans-
fer the values. The Beckhoff software "TC Motion Designer" is avail-
able for energy management purposes.
You must dimension the control cabinet in such a way that you can
install all components with the prescribed spacing.
Forced cooling must be used in case of high temperatures. Place
the control cabinet as close as possible to the machine. Dimension
the motor cables as short as possible. Apart from that, the control
cabinet must have a metallic, grounded rear panel, to which the
AX8000 and the peripherals are attached. This makes secure
grounding possible.
If you cannot satisfy the requirements, you must ground the AX8000
multi-axis servo system and corresponding components using a per-
missible and adequately dimensioned cable.
The application, servo drives, motors and gear units must be
matched to one another so that sufficient safety is ensured for all
components. Mechanical stiffness can occur after a while due to
wear.
Make sure that the components in the working area of the system
have adequate reserves so that the working life is not impaired and
the necessary control quality can be maintained.
The Beckhoff software "TC Motion Designer" is available for config-
uration of the drivetrain and selection of suitable components.
AX8000
Electrical installation
─── 57