Installation 04/2005
SINAMICS G110 Operating Instructions
26 6SL3298-0AA11-0BP0
On FSA to access the DC+/DC- terminals the cutout cover must be removed using
a small pair of cutters, ensuring that no plastics from the cutout fall into the inverter
housing (see Figure 2-6 on page 25). The terminal connection consists of two
spades measuring 6.3 mm by 0.8 mm. With the cutout cover removed and no
connections fitted to the spades, the inverter has only IP00 protection.
On FSB and FSC the DC+/DC- terminals are located on the underside at the
bottom of the unit (see Figure 2-6 on page 25). To access the DC terminals the two
upper plastic protectors (rabbits-teeth) must be removed by cutting them with a
small pair of cutters, ensure that no plastics from the protectors fall into the inverter
housing.
Connection of the DC bus between inverters is only envisaged for very basic
applications. For example, a simple winder/unwinding machine where both
inverters are powered from the same power supply and the same phase.
Caution
1. The DC+ terminal must be connected to the DC+ terminal of the other inverter
and conversely the DC- terminal must be connected to the DC- terminal of the
other inverter. Failure to connect the terminals correctly can result in severe
damage to both inverters.
2. Both inverters must be powered from the same power supply and the same
phase.
3. In the case of a short circuit on one of the inverters both inverters may be
damaged.
4. The inverters should be mounted as close as possible to reduce the length of
the DC link cables.
The following guidelines will keep the conformity of the inverter to UL requirements.
If connections to the DC Link terminals are required, then the following (or
equivalent) terminal crimps are recommended for use:
♦ Frame Size A – Molex crimp 19003-0001, Molex hand tool 19285-0036
♦ Frame Size B – Molex crimp 19017-0037, Molex hand tool 19285-0037 or
64001-0200.
♦ Frame Size C – Molex crimp 19017-0037, Molex hand tool 19285-0020 or
64001-0200.
The correct crimping tool must be used to join the crimp to the cable to ensure a
correct and secure connection.
The specified crimps and tools are readily available from any large supplier of
electrical connections. These can also be sourced by searching the Internet using
the part number specified.
The following minimum cross-section for cables should be used when utilizing the
DC terminals:
♦ FSA – 0.5 mm
2
(20 AWG)
♦ FSB – 1.5 mm
2
(16 AWG)
♦ FSC – 2.5 mm
2
(12 AWG)
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