SIGMATEK DIAS-Drive 335-23, Руководство пользователя

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DIAS-DRIVE 335-23
27.09.2017 Page 31
2.2.7 Voltage Supply Options
The main voltage supply for the DIAS-Drive requires a fixed connection. If the
servo amplifier is mounted on a moveable machine part with connector plug,
the ground connection has to have a minimum wire size of greater than 10
mm² (8 AWG) because of the high leakage current of the servo amplifier
(> 3.5 mA).
When using a ground fault interrupter in the circuit, a Type B FI switch must
be used. If an FI switch of Type A is used, a DC ground fault could cause it to
malfunction.
Main voltage supply
(grounded) The servo amplifier can be connected directly to a voltage
supply with a grounded neutral point without galvanic isolation.
Main voltage supply
(non-grounded) If the servo amplifier is operated in a non-grounded system (IT
grid), the danger of over voltage or damage exists. The
following measures can be taken to provide protection against
over voltage:
•
Use of a galvanically insolating transformer with a
grounded neutral point on the secondary side. This offers
the highest protection.
•
Installation of over voltage protection in the voltage supply
of the control cabinet.
The servo amplifier is tested according to EN 61800-3 as
follows:
•
Periodic over voltage between phase conductors (L1, L2,
L3) and the amplifier housing cannot exceed 1000 V
(amplitude).
•
According to EN61800, the peak voltages (< 50 µs)
between the phase conductors cannot exceed 1000 V.
Peak voltages (< 50 µs) between the phase conductors
and the housing cannot exceed 2000 V..
Note: Non-grounded mains supplies always require
additional surge protection in the mains input.
High voltage supply
If the input supply voltage exceeds the specified maximum
value, a suitable transformer is required to reduce it.