Schaffner Group
User and Installation Manual
Output filter FN5420 and RWK5420
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5.3.5 Connect shielding for shielded cables
When using shielded cables, the customer must en-
sure to properly connect the shielding of the cables
between input and output. Proper continuity of shield-
ing is important for EMC purpose and cannot be only
connected through the PE of the filter/reactor. The
customer must ensure that the cable shielding is con-
nected with as much surface as possible to a wide
connector like a bus bar or rail both on the drive side
cable and motor side cable. An example shielding
connection system is given in Figure 8 in section 3.5,
other EMC compliant system are possible.
5.3.6 Connect the device on drive side
Connect the device on drive side terminals U, V, W
to respective motor drive or rectifier outputs. The
third part of the output filter/reactor designation is a
number contains two digits, i.e. FN5420-10-
88
-
E0XXT, which indicates power terminal type.
See section 3.5.1 for the recommended wire size and
torque. Use stranded copper wire with a tem-pera-
ture rating of 75°C or higher.
5.3.7 Connect output filter motor side
Connect output filter motor side terminals U2, V2, W2
to respective motor inputs. Output filter input and out-
put terminals are the same type.
See section 3.5.1 for the recommended wire size and
torque. Use stranded copper wire with a temperature
rating of 75°C or higher.
5.3.8 Connect monitor switch TS- TS’
The monitor switch is a relay contact, which is open
in ALARM state. It is constituted by a thermal switch
NC 180°C (UL-approved) to detect overload of
chokes. It may either be used to remotely disconnect
the drive’s load via respective input of drive control
(check drive manual) or as alarm sensor for system
control unit.
AN ENGAGED MONITOR
SWITCH MUST LEAD TO
IMMEDIATE LOAD SHUTDOWN
AND INVESTIGATION OF THE
PROBLEM.
