English
2. INSTALLATION – MICROMASTER Vector
G85139-H1751-U529-D1
© Siemens plc 1999
4/8/99
16
WARNING
Make sure that the input power supply is isolated before making or changing any connections to the unit.
Ensure that the motor is configured for the correct supply voltage. Single/three phase 230 V units must not be connected
to a 400 V three phase supply.
When synchronous machines are connected or when coupling several motors in parallel, the inverter must be operated
with voltage/frequency control characteristic (P077= 0 or 2) and slip compensation must be disabled (P071 = 0).
Note:
This equipment is suitable for use in a circuit capable of delivering not more than 100,000 symmetrical amperes
(rms), for a maximum voltage of 230 / 460 V * when protected by a time delay fuse *.
* As detailed in section 8.
·
Frame size A
: the power terminals are directly available beneath the inverter. For the control terminals lift the flap in the front cover
of the inverter. (
As shown in
Figure 2.2.1
)
·
Frame size B:
use a small bladed screwdriver (
as shown in Figure 2.2.2
) to release the terminal cover of the inverter and allow it to
swing down to hang beneath the inverter.
·
Frame size C:
use a small bladed screwdriver (
as shown in Figure 2.2.3
) to release the gland plate and the fan housing; allow
them both to swing down to hang beneath the inverter.
Connect the cables to the power and control terminals in accordance with the information supplied in this section. Ensure that the
leads are connected correctly and the equipment is properly earthed.
CAUTION
The control, power supply and motor leads must be laid separately. They must not be fed through the same cable
conduit/trunking.
High voltage insulation test equipment must not be used on cables connected to the inverter.
Use screened cable for the control cable, Class 1 60/75
o
C copper wire only. Tightening torque for the field wiring terminals is 1.1 Nm.
A small bladed screwdriver, max. 3.5 mm will be required to operate the control terminal WAGO cable clamp connectors as shown in
Figure 2.2.4
.
To tighten up the power and motor terminal
screws use a 4 - 5 mm cross-tip screwdriver.
When all power and control connections are complete:
·
Frame size A
: lower the flap in the front cover of the inverter.
·
Frame size B :
lift and secure the terminal cover to the inverter.
·
Frame size C :
lift and secure the gland plate and the fan housing to the inverter.
2.2.1 Power and Motor Connections - MICROMASTER Vector - Frame Size A
1.
Ensure that the power source supplies the correct voltage and is designed for the necessary current
(see section 8)
. Ensure that
the appropriate circuit breakers with the specified current rating are connected between the power supply and inverter
(see
section 8)
.
