Operating Instructions – MOVIDRIVE® MDR60A/61B
105
12
Notes on electrical installation
Installation (MDR60A1320-503-00)
12.2 Notes on electrical installation
12.2.1 Operator protection
12.2.2 Protection of the regenerative power supply
12.2.3 System configuration/system conditions
Note the limitations for each system configuration! Contact SEW-EURODRIVE if you
are planning to operate regenerative power supply units in systems not listed in the fol-
lowing table.
WARNING
Electric shock from live components.
Severe or fatal injuries.
• A dangerously high voltage may be present for several minutes at the DC link ter-
minals of the MOVIDRIVE
®
MDR60A 1320-503-00 regenerative power unit. The
particular time period that is necessary for the voltage to drop to a harmless level
is determined by the drive controller in operation and has to definitely expire. The
specific times are given by the manufacturer for the drive controller in use.
• Replace any defective fuses in de-energized state only with a fuse of the specified
type!
NOTICE
The MOVIDRIVE
®
MDR60A1320-503-00 regenerative power supply units contain
components that can be damaged by electrostatic energy (ESDS).
Personnel working on the connections has to observe the measures set forth in inter-
national standard IEC747-1. That includes discharge of any electrostatic charges prior
to starting the job.
Discharge by touching the PE retaining screw or another grounded metal area in the
control cabinet.
VDE compliant system configuration
Regenerative power supply unit operation
With grounded star point
No limitations
With isolated star point
Prohibited
With grounded phase
Prohibited
