Product overview
2.8.2
Operation modes of the AX5021
It can be assumed that a brake module is used only if the brake energy cannot be dissipated despite a DC
link system and internal brake resistors. The brake module can be operated in two different operation
modes, which have a direct influence on the energy management. The operation modes can be selected
when using the external brake resistor. The following sketches show the storage capacity of the DC link of
the individual devices in relation to the operation modes.
Default operation mode 1 - Ext. brake resistor enabled (system / standard)
In this operation mode the capacity of the DC link of
the brake module is reduced by approx. 10%. At
90% DC link load the brake chopper then directs
the generated braking energy to the external brake
resistor and, when this has reached its capacity
limit, into the internal brake resistor. In this case the
brake energy is first fed into the brake module,
since the brake choppers in the other servo drives
are only activated at 100% utilization of the DC link.
This operation mode is set as the default, because
no further configuration of the devices in the DC
link system is necessary apart from the basic
configuration of the brake module. If the external
brake resistor of the brake module is mounted
outside the control cabinet, then the thermal load in
the control cabinet is also lower.
AX5000 Brake module AX5021
9
Version: 1.3
