2. INSTALLATION
English
© Siemens plc 1999
G85139-H1750-U049-C1
11
19/08/99
Model
MMxxx
1 AC 230 V
Class A
Filter
MMxxx/2
1/3 AC 230 V
Without
Filter
MMxxx/3
3 AC 380 -
500 V
Without
Filter
Frame Sizes
(all measurements in mm)
MM12
MM25
MM37
MM55
MM75
MM110
MM150
MM220
MM300
MM400
MM550
MM750
A
A
A
A
A
B
B
C
C
-
-
-
A
A
A
A
A
B
B
C
C
C
-
-
-
-
A
A
A
A
A
B*
B*
C*
C*
C*
H W D H1 H2 W1 F
A
= 147 x 73 x 141 160 175 - 55
B
= 184 x 149 x 172 174 184 138 -
C
= 215 x 185 x 195 204 232 174 -
* These units also available with built in filter e.g. MM220/3F
Figure 2.1.1: Mechanical Installation Diagram
2.2
Electrical Installation
Read the Wiring Guidelines given in section 1.2 before commencing installation.
The electrical connectors on the MICROMASTER are shown in Figure 2.2.1. Connect the cables to the power
and control terminal blocks in accordance with the information supplied in sections 2.3.1 - 2.3.4. Ensure that
the leads are connected correctly and the equipment is properly earthed as shown in Figure 2.2.1.
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 lead. Use Class 1 60/75
o
C copper wire only (for UL compliance). Tightening
torque for the power (mains input and motor) terminals is 1.1 Nm.
To tighten up the power/motor terminal screws use a 4 - 5 mm cross-tip screwdriver.
2.2.1
Power and Motor Connections - Frame Size A
Ensure that the power source supplies the correct voltage and is designed for the necessary current
(see
section 7)
. Ensure that the appropriate circuit-breakers/fuses with the specified current rating are connected
between the power supply and inverter
(see section 7)
.
Connect the power and motor connections as shown in Figure 2.2.1.
Fit the earth braid strap, supplied with the unit, between the PE faston connector and the mounting surface.
Ensure there is a good electrical connection between the mounting surface and the earth strap.
WARNING
Isolate the mains electrical supply before making or changing connections to the unit.
Ensure that the motor is configured for the correct supply voltage.
Single/three phase 230 V
MICROMASTERS 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).
