Safety Instructions
1. Consider that the mains supply must be protected via an overload release with re-
stricted guidance for each mains phase. The mains line should not be switched on,
before the work is completed.
2. Before turning on the unit the first time, make sure that the connected machine will
not have runaway axes.
3. Never connect capacitive loads to the output phases of the servo amplifiers and fre-
quency converters.
4. Prevent cable loops. Therefore, the units must only be connected to earth at the
provided PE connection for the mains supply line and the racks only at the provided
earth screw.
DANGER
Hazardous voltage
The use of filters causes leakage currents on the protective earth conduc-
tor (PE) which in the event of an error may be considerably higher than the
rated values. To protect persons against dangerous voltages filters must be
connected to earth before they are taken into operation. Possibly a resid-
ual current device cannot be used. According to DIN EN 61800-5-1/ DIN
EN 60204-1 the following measures are required when leakage currents
≥3.5 mA occur:
→ Install a connection without connector on the device and attach a cor-
responding warning note on the device. which also must appear in the
documentation of the device.
→ Use a protective conductor with min. conductor cross-section of
10 mm² or
→ install a second protective conductor: connect it in parallel to the first
protective conductor by using separate terminals.
Operation with residual current device (RCD)
Note
For detailed information regarding the operation with residual current device (RCD) re-
fer to the manual "EMC Guidelines", chapter "Safety-relevant Aspects, Residual Current
Device (RCD)". Also consider the standard DIN EN 60204-1, section 8: additional re-
quirements for electrical equipment with earth leakage currents greater than 10 mA.
3.6 Operation
WARNING
Risk of serious personal injury due to moving machine parts
During the operation of an installation with open doors or removed covers,
persons may seriously be injured by moving machine parts.
→ Keep the doors closed during the operation and do not remove cov-
ers.
12 Drive Amplifier SD4B - Hardware Description
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