Siemens MICROMASTER Vector Series - 1. OVERVIEW; 1.3 Electrical Installation - General Notes; Operation with Unearthed (IT) Supplies; Operation with Residual Current Device (RCD)

EnglishEnglish
1. OVERVIEW1. OVERVIEW
G85139-H1751-U529-D1G85139-H1751-U529-D1
© Siemens plc 1999© Siemens plc 1999
4/8/994/8/99
1010
Figure 1.2.3: Wiring guidelines to minimise effects of EMI MICROMASTER Vector Frame Size CFigure 1.2.3: Wiring guidelines to minimise effects of EMI MICROMASTER Vector Frame Size C
On no account must safety regulations be On no account must safety regulations be
compromised when installing inverters!compromised when installing inverters!
1.3 Electrical Installation - General Notes1.3 Electrical Installation - General Notes
1.3.1 1.3.1
Operation with Operation with
Unearthed Unearthed
(IT) Supplies(IT) Supplies
The MICROMASTER Vector will operate from unearthed supplies and will continue to operate if an inputThe MICROMASTER Vector will operate from unearthed supplies and will continue to operate if an input
phase is shorted to earth. If an output phase is shorted to earth, the MICROMASTER Vector will trip andphase is shorted to earth. If an output phase is shorted to earth, the MICROMASTER Vector will trip and
indicate F002.indicate F002.
Note:Note:
MIDIMASTER MIDIMASTER
Vector inverters will operate from unearthed supplies Vector inverters will operate from unearthed supplies
provided that the switchingprovided that the switching
frequency is set to 2kHz (P076 = 6 or 7).frequency is set to 2kHz (P076 = 6 or 7).
1.3.2 1.3.2
Operation with Operation with
Residual CurreResidual Curre
nt Device nt Device
(RCD)(RCD)
The MICROMASTER and MIDIMASTER Vector The MICROMASTER and MIDIMASTER Vector
inverters will operate without nuisance tripping with inverters will operate without nuisance tripping with
an RCDan RCD
(also called ELCBs or RCCBs) fitted to the input providing:(also called ELCBs or RCCBs) fitted to the input providing:
••
A A
type type
B B
RCD RCD
is is
used.used.
••
The trip The trip
limit limit
of of
the the
RCD RCD
is is
300mA.300mA.
••
The The
neutral neutral
of of
the the
supply supply
is is
earthed.earthed.
••
Only Only
one invone inv
erter is erter is
supplied supplied
from each from each
RCD.RCD.
••
The output The output
cables are cables are
less than less than
50m (screened 50m (screened
) or ) or
100m (unscreened).100m (unscreened).
1.3.3 1.3.3
Installation after Installation after
a Period of a Period of
StorageStorage
It is necessary to reform the capacitors in the inverter if the unit has been stored for a prolonged period:It is necessary to reform the capacitors in the inverter if the unit has been stored for a prolonged period:
••
Period Period
of of
storage storage
1 1
year year
old old
or or
less:less:
No No
reforming reforming
is is
required.required.
••
1 1
- -
2 2
years years
old:old:
Apply Apply
power power
to to
the the
inverter inverter
one one
hour hour
before before
giving giving
the the
run run
command command
(preparation tim(preparation tim
e e
1 1
hour).hour).
••
2 2
- -
3 3
years years
old:old:
MAINS POWER INPUTMAINS POWER INPUT
FOOTPRINT FILTERFOOTPRINT FILTER
METAL BACK-PLATEMETAL BACK-PLATE
Fix motor and control cable screenFix motor and control cable screen
securely to metal back plate usingsecurely to metal back plate using
suitable clips.suitable clips.