Safety information
1.4
Additional safety notes for the
“
Safe standstill
”
function
•
Only qualified personnel are permitted to install and set up the
“
Safe standstill
”
function.
•
All safety-relevant external cables (e.g. control cable for the safety relay, feedback contact)
must be protected, for instance by a cable duct. Short circuits between signal and ground and
between signal cables must be avoided.
•
In the event of external forces acting on the axis, additional brakes are required. Please take
into account the gravitational force on hanging loads!
Warning!
When using the
“
Safe standstill
”
function additional measures are required for
“
Emergency off
”
:
Motor and controller are not isolated and not equipped with a
’
service switch
’
or
’
repair switch
’
!
An
“
Emergency off
”
requires potential isolation, e.g. by a central mains contactor.
During operation
Safety circuits must be checked after first commissioning and subsequently at regular intervals.
1.5
Residual hazards
In the event of a short circuit of two power transistors, a residual movement of up to 180
°
/pole pair
number can occur at the motor! (Example: 4-pole motor residual movement max. 180
°
/2 = 90
°
)
This residual movement must be taken into account for the risk analysis, e.g. safe standstill for main
spindle drives.
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