Electrical installation
101
Frames 2×R8i and up
Standard unit without optional auxiliary control voltage transformer or terminals for
connecting external control voltage
Connect the external auxiliary power supply for the cooling fans and control circuitry
to breaker Q11. The breaker Q11 is located in the auxiliary control cubicle or in the
inverter module cubicle. See section Auxiliary circuit current consumption on page
164 for the current consumption of the circuitry.
Units with optional auxiliary control voltage transformer and without terminals for
connecting external control voltage (+G307)
Auxiliary power to drive cooling fans and control circuitry is supplied from the main
power line through the optional auxiliary control voltage transformer (T10). No user
connections are needed.
Power supply for fans and control circuitry (units without optional auxiliary control
voltage transformer and without option +G307)
>
LN
Q11
3
2
1
PE
N
L
>
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