Siemens MICROMASTER Eco Reference Manual page 40

Gain access to terminals Frame size A.
The power and motor terminals are directly
accessible beneath the inverter.
Gain access to terminals Frame size B.
Insert the blade of a small screwdriver into the
slot in the front of the inverter and press in the
direction of the arrow. At the same time, press
down on the tab at the side of the access panel.
This will release the access panel, which will then
swing down on its rear-mounted hinges.
The access panel can be removed
from the inverter when at an angle of
approximately 30° to the horizontal.
If allowed to swing lower, the panel
will remain attached to the inverter.
Remove the earthing screw from the gland plate.
Press both release catches to release the gland
plate and then remove the metal gland plate from
the inverter.
Gain Access to Terminals Frame Size C
While supporting the fan housing with one hand,
insert the blade of a screwdriver into the slot on
the underside of the inverter and press upwards
to release the securing tab. Lower the fan
housing, allowing it to swing out to the right on its
side-mounted hinges.
Applying pressure to the gland plate, release 2
clips in the direction of the arrows. Swing the
plate out to the left on its side-mounted hinges.
1. Make sure that the power source supplies the
correct voltage and has the necessary supply
current capacity. Make sure that the
appropriate circuit-breaker or fuses with the
specified current rating are connected
between the power supply and inverter (Refer
to the fuse recommendations on page 10-5).
Frame Size B + C
2. Feed the cables through the correct glands in
the base of the inverter. Secure the cable
glands to the inverter and connect the leads to
the power and motor terminals.
10-4
3. For the power input, use a 4-core cable for
three phase units.
4. Connect the power input leads to the power
terminals L/L1, N/L2, L3 (3 phase), and earth
(PE).
5. Use a 4-core cable and suitable lugs to
connect the motor leads to the motor
terminals U, V, W and the earth (PE).
6. Tighten all the power and motor terminals
Frame Size A
These connections have to be made with the
inverter removed from the mounting surface.
Care must be taken routing the leads through the
moulded clips to prevent trapping and chafing
when the unit is mounted and secured to the
selected surface.
Make sure that the leads are
connected correctly and the
equipment is properly earthed.
The total length of the motor cable
should not generally exceed 150 m.
If a screened motor cable is used or if
the cable channel is well grounded,
the maximum length should be
100 m. Cable lengths up to 200 m
are possible by using additional
output chokes or de-rating the
inverter's output current.
ECO REFERENCE MANUAL