Illustration 4.17 Mounting of EMC Shield.
4.1.12
Mains Connection
Mains must be connected to terminals 91, 92 and 93. Earth
is connected to the terminal to the right of terminal 93.
Terminal No. Function
91, 92, 93
94
Mains R/L1, S/L2, T/L3
Earth
Table 4.11 Mains Terminals Connection
CAUTION
Check the name plate to ensure that the mains voltage
of the frequency converter matches the power supply of
the plant.
Ensure that the power supply can supply the necessary
current to the frequency converter.
If the unit is without built-in fuses, ensure that the
appropriate fuses have the correct current rating.
4.1.13
External Fan Supply
In case the frequency converter is supplied by DC or if the
fan must run independently of the power supply, an
external power supply can be applied. The connection is
made on the power card.
Terminal No. Function
100, 101
102, 103
Auxiliary supply S, T
Internal supply S, T
Table 4.12 External Fan Supply Terminals
The connector located on the power card provides the
connection of line voltage for the cooling fans. The fans
are connected from factory to be supplied from a common
AC line (jumpers between 100-102 and 101-103). If external
supply is needed, the jumpers are removed and the supply
is connected to terminals 100 and 101. Use a 5 A fuse for
protection. In UL applications, use a LittelFuse KLK-5 or
equivalent.
4.1.14
Fuses
It is recommended to use fuses and/or circuit breakers on
the supply side as protection in case of component break-
down inside the frequency converter (first fault).
NOTICE
This is mandatory to ensure compliance with IEC 60364
for CE or NEC 2009 for UL.
WARNING
Personnel and property must be protected against the
consequence of component break-down internally in the
frequency converter.
Branch circuit protection
To protect the installation against electrical and fire hazard,
all branch circuits in an installation, switch gear, machines
etc., must be protected against short-circuit and
overcurrent according to national/international regulations.
NOTICE
The recommendations given do not cover branch circuit
protection for UL.
Short-circuit protection:
Danfoss recommends using the fuses/circuit breakers
mentioned below to protect service personnel and
property in case of component break-down in the
frequency converter.
Non UL compliance
If UL/cUL is not to be complied with, use the following
fuses to ensure compliance with EN50178:
P110 - P250
380 - 480 V type gG
P315 - P450 380 - 480 V type gR
Table 4.13 EN50178 Fuses
Electrical Installation
VLT HVAC Drive FC 102 Operating Instructions
MG11F402 - Rev. 2013-12-16 59
4 4
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