2. Safety instructions for electrical drives and controllers
16
Festo.P.BE-CMMS-ST-HW-EN 0903b
2.4.2
Safety instructions for assembly and maintenance
For assembling and maintaining the system, the relevant DIN, VDE, EN and IEC
regulations, as well as all national and local safety and accident prevention regulations
must always be observed. The system manufacturer or the user is responsible for
ensuring that these regulations are observed.
Warning
The stepping motor controller may only be operated, maintained
and/or serviced by persons qualified and trained to work on or with
electrical devices.
Avoiding accidents, bodily injury and/or material damage:
Warning
The series-supplied motor holding brake or an external motor-
holding brake controlled by the drive controller alone is not suit-
able for protecting human beings.
Vertical axes must be additionally secured against falling or
sliding down when the motor is switched off with e.g.
– mechanical locking of the vertical axis,
– external braking, safety catch or clamping devices or
– sufficient weight compensation of the axis.
Warning
During operation and up to several minutes after the stepping
motor controller is deactivated, the internal brake resistance can
cause dangerous intermediate circuit voltage. If touched, this can
lead to fatal or serious injuries.
Before carrying out maintenance work, make sure that the
power supply is switched off and locked and that the
intermediate circuit is discharged.
Switch the electrical equipment free of voltage via the main
switch and make sure that it cannot be switched on again.
Wait until the intermediate circuit is discharged after
– maintenance work and repairs
– cleaning
– long periods out of use.
Warning
Proceed carefully with mounting. Ensure that no drilling chips,
metal dust or mounting material (screws, nuts, wire cuttings) fall
into the stepping motor controller during mounting work and
subsequent operation.
