Siemens SINAMICS G110, Operating Instructions Manual

Page: 24 / 92

Installation 04/2005
SINAMICS G110 Operating Instructions
24
6SL3298-0AA11-0BP0
Operation with Residual Current Device
If an RCD (also referred to as ELCB or RCCB) is fitted, the SINAMICS G110
inverters will operate without nuisance tripping, provided that:
¾
A type B RCD is used.
¾
If the SINAMICS G110 inverter is connected to a single-phase grounded-neutral
star mains network, an RCD of type A is permissible.
¾
The trip limit of the RCD is 30 mA.
¾
The neutral of the supply is grounded.
¾
Only one inverter is supplied from each RCD.
¾
The output cables are less than 25 m [82.02 ft](screened) or 50 m [164.04 ft]
(unscreened).
Operation with long cables
WARNING
Never use high voltage insulation test equipment on cables connected to the
inverter.
CAUTION
The control, power supply and motor leads must be laid separately. Do not feed
them through the same cable conduit/trunking.
All inverters will operate at full specification with the following cable lengths:
♦
25 m (82.02 ft) [FSA filtered 10 m (32.81 ft)] screened cable
♦
50 m (164.04 ft) unscreened cable
2.9.2 Power and motor connections
WARNING
¾
Isolate the mains electrical supply before making or changing connections to
the unit.
¾
Ensure that the inverter is connected to the correct supply voltage:
single-phase 230 V SINAMICS G110 inverters must not be connected to a
higher voltage supply.
NOTES
¾
Ensure that the appropriate circuit-breakers/fuses with the specified current
rating are connected between the power supply and inverter (see Technical
Specifications on page 67).
¾
Use Class 1 75
o
C copper wire with the cross-sections as specified in Table 7-4
and Table 7-5 on pages 68 and 69 respectively (16 AWG minimum for UL
compliance). For tightening torque see Table 7-2 on page 68.
¾
To tighten up the power terminal screws use a 4 - 5 mm cross-tip screwdriver.
¾
To conform to UL requirements the control terminals of the G110 inverter are
UL Recognized for use only with solid conductors.
¾
To conform to UL requirements a UL listed Crimp Ring Terminal should be used
on the following PE (ground) terminals of the G110 inverter: FSA – both input
and motor PE terminals. FSB and FSC – the input PE terminal only.