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Safety notes for electrical drives and controllers
Page 22
Product Manual
“Servo drive DIS-2 310/2 FB FS STO“
Version 4.0
2.4.2
Safety notes for assembly and maintenance
The appropriate DIN, VDE, EN and IEC regulations as well as all national and local safety regulations
and rules for the prevention of accidents apply for the assembly and maintenance of the system. The
plant engineer or the operator is responsible for compliance with these regulations:
The servo drive must only be operated, maintained and/or repaired by personnel trained
and qualified for working on or with electrical devices.
Prevention of accidents, injuries and/or damages:
Additionally secure vertical axes against falling down or lowering after the motor has
been switched off, for example by means of:
Mechanical locking of the vertical axle,
External braking, catching or clamping devices or
Sufficient balancing of the axle
The motor holding brake supplied by default or an external motor holding brake driven by
the servo drive alone is not suitable for personal protection!
Keep the electrical equipment voltage-free using the main switch and protect it from
being switched on again until the DC bus circuit is discharged, in the case of:
Maintenance and repair work
Cleaning
long machine shutdowns
Prior to carrying out maintenance work make sure that the power supply has been turned
off, locked and the DC bus circuit is discharged.
The external or internal brake resistor carries dangerous DC bus voltages during
operation. Contact may result in death or serious personal injury.
After the mains supply has been switched off, the intermediate circuit capacitors of the
DIS-2 310/2 FB FS STO carry a residual charge that only decreases slowly via internal
discharge resistors in the DIS-2 310/2 FB FS STO (duration: > 270 s to U
ZK
< 60 V).
At U
ZK
= 400 V the electrical energy per DIS-2 310/2 FB FS STO is: E
C,ZK
20 J
Please wait this time prior to performing any work on the affected connections. For safety
reasons, control the intermediate circuit by measurement. Contact with high intermediate
circuit voltages may result in death or serious personal injury.
In applications where this is not acceptable, the intermediate circuit must be rapidly
discharged via an additional contact and a suitable dimensioned discharge resistor.