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4.6 Start the motor
4.7 Operation
The motor accelerates at the set values when the start command (high
signal) is applied at control terminal +A1. In the case of frame sizes 3 and 4,
the EN signal must be present before +A1. The actual acceleration time can
differ from the set values, depending on the load. After the start is
completed, the soft starter switches to the operating phase.
Switching on the motor side is permissible for a safety disconnection
(emergency switching off).
DANGER
On no account must you open the device if the supply voltage
is switched on. Danger to life!
DANGER
Soft starters are electrical apparatus for use in power
installations in industrial applications. During operation
hazardous live parts and hot surfaces are present on the soft
starter. These present a risk of serious injury!
DANGER
The impermissible removal of the required cover, improper
installation or incorrect operation of the motor or soft starter can
cause the failure of the device and serious injury and/or material
damage.
DANGER
If the device displays an error message, this must be examined
carefully. If a hardware fault is indicated, it is possible that not all
phases of the soft starter have disconnected. Before working on
the device or motor, they must be securely isolated beforehand
from the mains supply without fail (e.g. switch off circuit-
breaker).
￫
If the drive is not isolated from the supply when stationary
(mains contactor, main switch), it may start up accidentally in
the event of a malfunction. Even if the motor is stationary,
the terminals are still energized (leakage current across the
thyristors, uncontrolled phase)
DANGER
One phase to the motor is internally bridged, which means that
a supply phase is still directly present at the motor even when it
is switched off. Danger in the event of contact!
DS7 Soft starter 09/16 MN03901001Z-EN www.eaton.com
4 Operation
4.6 Start the motor
105
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