Summary
Preface
P. 6
Chapter 2
P. 17
Technical data
Chapter 5
P. 76
Reception, storage
and installation
Chapter 4
P. 54
General information
Chapter 3
P. 47
Application notes
Chapter 6
P. 115
Options
Chapter 7
P. 129
Preventive maintenance
Chapter 1
P. 15
Overview
and installation diagram
Answer Drives 1000
107
5
RFI FILTER INSTALLATION:
To ensure that the filter is working properly, it is necessary to ensure
reliable connections with low impedance/HF, and therefore it is necessary
to comply with the following guidelines.
• Assemble the filter on a metal plate with unpainted connection points
in accordance with the instructions provided by the manufacturer of the filter.
• Bolt the filter cabinet frame at several points (if separate) to the drive
cabinet. Remove paint, if any, from all points of connection.
• The filter input and output cables must not be placed in parallel and
must be separated from each other.
• The maximum cable length between the filter and the drive should be
less than 0.3 m; for greater lengths use screened cable.
• Position the filter so as not to obstruct the ventilation channel of
the drive.
• The filter must be grounded in accordance with the instructions of
the manufacturer. It should be noted that the cable type and size are
critical factors.
NOTE
It is not possible to use filters in floating networks (IT systems) where there
is a high impedance, or there are no physical links between the phases
and the ground.
Provide surge suppressors to the coils of relays, contactors, solenoid valves,
even when they are installed outside the cabinet.
5.9.2.1 RFI FILTER
(see table 5.5.1 for the filters codes)
RFI in networks with grounded neutral (TN or TT)
The filters are suitable only for networks with grounded neutral (e.g.
European public 400 V network). According to EN 61800-3, the filters are
not compatible with floating networks (IT).
Control and insulation devices
The filters (with their internal discharge resistors), cables, drive
and motor have an overall considerable capacity to ground which causes an
increase in current leakage to ground (>30mA).
The ground protection device must be suitable for these values.
IT floating networks
For floating networks, also referred to as IT networks, ungrounded, or
with impedance/resistance greater than 30.
Ω
to ground if equipped with
RFI filter:
• Disconnect the filter before connecting the drive to the network.
• If EMC requirements are needed, check for excessive emission to the
neighbouring low-voltage network. In some cases, the natural
suppression in transformers and cables is sufficient. When in doubt, use
a transformer with a screen between primary and secondary.
NOTE
Refer to Chapter 5.9.2.2 for the removal of the filter inside the drive
and figure 5.6.3 for the connection between filter and drive.
The filter must be grounded before applying power to the drive and may
only be used with balanced networks. Do not install or remove the RFI
filter when the drive terminal are under voltage.
If an drive with related RFI filter is installed on an IT system [network
insulated from ground or network connected to the ground with a high
resistance (> 30.
X
), the network will be connected to the ground potential
through the EMC filter capacitors of the drive. This may cause danger or
damage the unit.
The filter must not be connected to the output terminals (motor side).
5.9.2.1 RFI FIL
TER
Summary of Contents for AD1A008FBBNH
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