SK 500E – Brief instructions for frequency inverters
8 BU 0540 EN-1516
DANGER!
Electric shock
Even if the drive unit has been disconnected from the mains, a connected motor may rotate and possible
generate a dangerous voltage. Touching electrically conducting components may then cause an electric shock
with possible fatal consequences.
Therefore prevent connected motors from rotating.
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WARNING
Electric shock
The voltage supply of the device may directly or indirectly put it into operation, or touching electrically conducting
components may then cause an electric shock with possible fatal consequences.
Therefore, all poles of the voltage supply must be disconnected. For devices with a 3-phase supply,
L1 / L2 / L3 must be disconnected. For devices with a single phase supply, L1 / N must be disconnected. For
devices with a DC supply, –DC / +B must be disconnected. Also, the motor cables U / V / W
disconnected.
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WARNING
Electric shock
In case of a fault, insufficient earthing may cause an electric shock with possibly fatal consequences if the device
is touched.
Because of this, the device is only intended for permanent connection and may not be operated without effective
earthing connections which comply with local regulations for large leakage currents (> 3.5 mA).
EN 50178 / VDE 0160 stipulates the installation of a second earthing conductor or an earthing conductor with a
cross-section of at least 10 mm
2
. ( TI 80-0011), ( TI 80-0019)
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WARNING
Danger of injury if motor starts
With certain setting conditions, the device or the motor which is connected to it may start automatically when the
mains are switched on. The machinery which it drives (press / chain hoist / roller / fan etc.) may then make an
unexpected movement. This may cause various injuries, including to third parties.
Before switching on the mains, secure the danger area by warning and removing all persons from the danger
area.
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CAUTION
Danger of burns
The heat sink and all other metal components can heat up to temperatures above 70 °C.
Touching such components may cause local burns to the affected parts of the body (hands, fingers, etc.).
To prevent such injuries, allow sufficient time for cooling down before starting work - the surface temperature
should be checked with suitable measuring equipment. In addition, keep a sufficient distance from adjacent
components during installation, or install protection against contact.
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Damage to the device
For single phase operation (115 / 230 V) the mains impedance must be at least 100 µH for each conductor. If this
is not the case, a mains choke must be installed.
Failure to comply with this may cause damage to the device due to impermissible currents in the components.
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EMC - Interference
The device is a product which is intended for use in an industrial environment and is subject to sales restrictions
according to IEC 61800-3
. Use in a residential environment may require additional EMC measures.
( Document TI 80_0011)
For example, electromagnetic interference can be reduced by the use of an optional mains filter.
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