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English
English
1. OVERVIEW
1. OVERVIEW
G85139-H1751-U529-D1
G85139-H1751-U529-D1
© Siemens plc 1999
© Siemens plc 1999
4/8/99
4/8/99
10
10
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 Notes
1.3 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 input
The 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 and
phase 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 switching
provided 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 Curre
Residual Current 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 RCD
an 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 inv
one inverter 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 Storage
Storage
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 time
e 1
1 hour).
hour).
••
2
2 -
- 3
3 years
years old:
old:
MAINS POWER INPUT
MAINS POWER INPUT
FOOTPRINT FILTER
FOOTPRINT FILTER
METAL BACK-PLATE
METAL BACK-PLATE
Fix motor and control cable screen
Fix motor and control cable screen
securely to metal back plate using
securely to metal back plate using
suitable clips.
suitable clips.