Safety instructions
Lenze low-voltage machinery
1
EDK71MMXXX-020 DE/EN/FR 1.0
9
L
5. Electrical connection
All operations mustbe carriedout only by qualifiedand skilled personnelwhen the low-voltage machine is at s tandstill
and when the machine is de-energized and protected against unintentional restart. This also applies to auxiliary
circuits (e.g. brake, encoder, separate fan).
Check safe isolation from the supply!
If the tolerances in EN 60034-1; IEC 34 (VDE 0530-1) - voltage ±5 %, frequency ±2 %, waveform, symmetry - are
exceeded, more heat will be generated and the electromagnetic compatibility will be influenced.
Observe the indica tions on the nameplate, operating notes, and the connection diagram in the terminal box.
The connection must ensure a c ontinuous and safe electrical supply (no loose wire ends); use appropriate cable
terminals. The connection to the PE conductor must be safe. The plug-in connector must be s crewed up tightly (to
stop).
The clearances between bare, live parts and earth must not fall below: 8 mm at V
rated
≤ 550 V, 10 mm at V
rated
≤
725 V, 14 mm at V
rated
≤ 1000 V.
The terminal box must be clean and dry; foreign particles, dirt and moisture affect operation. All unused cable entries
and the box itself must be sealed against dust and water.For the trial run without outputelements, lock the key. Check
brake operation before the commissioning of low-voltage machines with brakes.
6. Operation
Vibration severities v
rms
≤ 3.5 mm/s (P
rated
≤ 15 kW) or 4.5 mm/s (P
rated
> 15 kW) are acceptable when the clutch
is activated. If deviations from normal operation occur, e.g. increased temperature, noise, vibration, find the cause
and, if necessar y, contact the manufacturer. Switch-off the machine in problematic situations .
If the drive is exposed to dirt, clean it regularly.
Do not switch-off the protection devices, not even for trial runs.
Integrated temperature sensors do not provide full protection. If necessary, limit the maximum current. Connect the
function blocks to the optionswitch-offafter several secondsof operation at I > I
rated
,especially ifblocking may occur.
Shaft seals and bearings have a limited serv ice life.
Regrease the bearings using the relubrication facility while the low-voltage machine is running. Observe the
saponifica tion number. If the grease drain hole is sealed with a plug (IP54 drive end; IP23 drive end and non-drive
end), remove the plug before commissioning. Seal the bore holes with grease. Replace the prelubricated bearings
(2Z-bearings) after approx. 10.000 h - 20.000 h, at the latest how ever after 3 - 4 years. Observe the manufacturer’s
instructions.
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