Fagor Compact Drives and Motors Quick Reference. Ref.1910 CQR-49/56
The connection may vary depending on the type of mains and
electromagnetic compatibility required by the machine.
Protection fuses
The DDS system does not include the fuses.
Differential breaker
On a DDS system, fault DC current, practically flat, may come up
besides the AC currents and pulsating DC currents. This requires the
use of a differential breaker. This switch must be a B type universal
breaker of selective disconnection.
As an alternative, «A type» differential signals may be used with
selective shut-off. They are more economical than the «B type» and
usually valid for DDS systems with a FAGOR filter. The shut-off
current must be equal or greater than 500 mA and with selective
switch-off.
Isolating transformer or auto-transformer
When the mains voltage must be isolated or adapted to the levels
required by the DDS system, it may be connected through an
isolating transformer or an auto-transformer.
This element will also help reduce the amount of harmonics on the
line although it will not guarantee the compliance with the EC
regulation.
This means oversizing the transformer or auto-transformer
considerably in relation to the power of the machine. Thus, individual
transformers should not be used for each machine; instead, several
machines should be connected to a single transformer. Thus it is
possible to apply simultaneity factors and decrease the power
required by the transformer or auto-transformer.
DISTRIBUTION DIAGRAMS
The distribution diagram being used must be taken into consideration
in order to determine the characteristics of the protection means
against electrical shocks, in case of failure (indirect contacts) and
against over-current, as well as the specifications of the devices in
charge of such functions. The distribution diagrams are established
according to the ground connections of the distribution network or of
mains, on one hand, and the of the grounds of the receiving
installation on the other.
Depending on the electric energy distribution network, there are three
types of diagrams: TN, TT and IT.
TN diagram
Distribution diagram that has a point directly connected to ground and
the conductive parts of the installation are connected to this point
through ground protection conductors.
MANDATORY. Never connect other components (motors,
inductive components, etc.) in parallel with the drive system.
They may cause the system to perform poorly when
stopping the machine. The equipment to be connected
together with the DDS system must be powered through a
second contactor or through auxiliary contacts of the drive's
contactor.
INFORMATION. The mains filter may be installed either
before or after the power switch - KM1.
WARNING. The protect the DDS system fuses must be
includes on the lines coming from mains.
WARNING. Using other types of protection instead of fuses
(e.g.:magneto-thermal switches) does not ensure the
proper protection of the unit.
ACD/SCD/CMC SCD
MANUFACTURER
1.08 1.15 1.25 2.35/2.50 2.75
BUSSMANN
FC-6A FC-12A FC-20A FWC-32A10F -
XL50-10A XL50-15A RF-000-25 FWP-32A10F -
6CT 12CT - - -
FWH-6.30A6F - - - -
GOULD
ST-6
10x38
ST-12
10x38
ST-20
10x38
--
000-10 000-16 A60x20 - -
000/80-10 000/80-16 - - -
FERRAZ
6.600CP
URC 14.51/6
D08L 040
12.600CP
URC 14.51/6
D08L 040
A60Q20-2 A60Q30-2 -
6.621CP
URC 14.51/6
D08L 040
12.621CP
URC 14.51/6
D08L 040
-- -
6.6URE10/6
D08L 040
12.6URE10/6
D08L 040
-- -
A60Q6-2 A60Q12-2 - - -
A60X6-1 A60X12-1
-- -
SIEMENS
- - 3NE8015 3NE8003 -
SIBA
----
50-140-34.63
without striker
----
50 142 34.63
with striker
INFORMATION. It is not recommended to use differential
breakers sensitive to pulsating currents and, overall, general
purpose differential breakers. In this cases, undesired stops
might occur due to the high sensitivity of those devices to
pulsating currents.
MANDATORY. Never use AC type differential breakers.
INFORMATION. When having a mains perfectly referred to
ground, auto-transformers may be used to adapt the mains
voltage. However, if mains is not referred to ground, an
isolating transformer must be used in order to avoid possible
dangerous voltage surges on any phase with respect to
ground that could damage the equipment. In this situation, the
secondary must have a star configuration with access to the
middle point. This middle point of the secondary must be
connected to ground or the neuter of mains.
MANDATORY. When using transformers or auto-
transformers, the main contactor must be connected
between them and the DDS system, never on the input line
of the transformer or autotransformer.
Note. Not complying with the given indications could cause the
DDS system to perform poorly.
Note. The mains filter may be installed either before or after the
power switch - KM1.
Note that the diagrams provided here do not show the main
contactor - KM1 that must be connected between the transformer or
auto-transformer and the DDS system.
M A I N S
C O N N E C T I O N
- S 1
M A I N S
S W I T C H
- Q 1
D I F F E R E N T I A L
B R E A K E R
M A I N S F I L T E R
- K M 1
P O W E R
S W I T C H
A C D / S C D
- K M 1
- Q 1
- S 1
P O W E R
S W I T C H
D I F F E R E N T I A L
B R E A K E R
M A I N S
S W I T C H
M A I N S
C O N N E C T I O N
N
A C D / S C D
M A I N S F I L T E R
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