ctrlX SAFETY "SafeMotion"
Safety functions in special mode “Safe motion SMMx”
– In addition to the static holding torque of the brake, the required dynamic
braking torque of the brake has to be considered. The dynamic braking
torque of the brake has a direct influence on the behavior of the axis in
the case of error and needs to be taken into account in the risk analysis.
–
When selecting the brakes, it has to be taken into account that the con-
trol outputs are tested during operation. For this purpose, the outputs
are switched off for a short time (≤1 ms) and the brake is controlled. If
a very fast acting brake is used, it cannot be excluded that the brake is
temporarily released or applied.
●
Reliability:
The brake has to be approved for the maximum and minimum ambient tem-
peratures.
For the application case, the stipulated C-standard applies to the design and
sizing of the brakes.
WARNING
High electrical voltage! Danger to life, risk of injury by
electric shock or serious personal injury!
During the time a safety function is active, power is not
removed from the motor; de-energize the drive before
working on the motor.
Table 13: Maximum allowed output current for holding brake according to
device and connection
Connection
1)
maximum allowed output current
XG03 2 A
XZ03 1 A
1)
Connection depends on the device type and the current rating. For details
refer to the configuration of the device.
8.4 Safety functions in special mode “Safe motion SMMx”
8.4.1
Safely-limited speed (SLS)
Safety function description
In the case of the safety function "Safely-limited speed", dual-channel mon-
itoring prevents the drive from exceeding the preset velocity thresholds
[P-0-3290.x.2 (x=1..16)].
DANGER
Lethal injury and/or property damage caused by unin-
tended axis motion or by deviation from the standstill
position!
Please comply with the safety instructions in the chapter
"Project planning instructions".
Features
The safety function "Safely-limited speed" has the following features:
● Required optional safety technology module: The safety function can be
used in drive systems equipped with the optional safety technology module
“Mx”.
●
Maximum safety level:
The safety function is intended for safety-relevant applications up to
Category 3, PL d according to EN ISO 13849-1 or up to SIL 2 according
to EN 62061.
●
Notes on parameterization:
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