AZ3s USER MANUAL
ST.TEC.054
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When the state of DS402 becomes Operation enabled, after a waiting time defined in brake
disengage time, brake is disinserted. brake disengage time permits to disinsert brake only when the
engine delivers sufficient torque to keep the load stable, this is fundamental for example in the
applications involving a suspended load. It is possible to disinsert brake only if there are not errors
and if TDI is enabled.
When the state of DS402 becomes different from Operation enabled, after a waiting time defined in
brake engage time, brake is engaged. In case of fault or if TDI becomes disabled, brake is engaged.
The operation described above defines the normal brake behavior (selectable by setting BRAKE 1
MODE SEL to 0). It is possible to engage and disengage brake in others conditions.
If BRAKE 1 MODE SEL is set to 1, brake is disengaged and engaged in function of the DS402 state and
the coils value (from BKS1 to BKS9). If a coil is set to 1, in the corresponding state of the ds402, brake
is disinserted. Vice versa if the coil is set to 0, in the corresponding state of the ds402, brake is
engaged. For example, if the DS402 state machine is in operation enabled state and OPERATION
ENABLED (BKS6) coil is set to 1, then the brake is disinserted. In this configuration brake disengage
time and brake engage time are not used.
If BRAKE 1 MODE SEL is set to 2, brake is engaged and disengaged in the same condition of the case
BRAKE 1 MODE SEL equal to 0, but brake is also engaged when the actual value of the controlled
variable is 0.
Enabling Brake activation is possible to directly control the brake. When Brake activation is enabled
brake are controlled by the state of Brake value. If Brake value is 1 then brake is disinserted, viceversa
if it is 0, brake is engaged. When Brake activation is enabled, the other brake management modes
are overwritten.
EXAMPLE: in an application in a motor is mounted a brake with engage and disengae time equal to
10 ms. Brake is connected to the power output 1 of the drive. In this application is necessary to
engage brake when Velocity actual value is 0, in case of fault and when the power stage is disabled.
parameters must be configured as follow:
𝐴𝑈𝑋 𝑃𝑊𝑀 𝑂𝑈𝑇 1 𝑆𝐸𝐿 = 1
𝐵𝑟𝑎𝑘𝑒 𝑣𝑎𝑙𝑢𝑒 = 95
𝐵𝑅𝐴𝐾𝐸 1 𝑀𝑂𝐷𝐸 𝑆𝐸𝐿 = 2
𝑏𝑟𝑎𝑘𝑒 𝑑𝑖𝑠𝑒𝑛𝑔𝑎𝑔𝑒 𝑡𝑖𝑚𝑒 = 10
𝑏𝑟𝑎𝑘𝑒 𝑒𝑛𝑔𝑎𝑔𝑒 𝑡𝑖𝑚𝑒 = 10