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3.4.2.1 Connecting the Motor Cable
Connect the motor power cable to the M1, M2, and M3 terminals of the main power connector
and the fourth wire to the PE (Protective Earth) on the heat sink (see diagram above). The
phase connection order is arbitrary because the Composer will establish the proper
commutation automatically during setup.
Notes for connecting the motor cables:
For best immunity, it is highly recommended to use a shielded (not twisted) cable for
the motor connection. A 4-wire shielded cable should be used. The gauge is
determined by the actual current consumption of the motor.
Connect the shield of the cable to the closest ground connection at the motor end.
Connect the shield of the cable to the PE terminal on the Drum.
Be sure that the motor chassis is properly grounded.
To close the motor cable into the drive, use the barrel connector, M6 spring washer
and M6 nut (in the drive). The required torque is 3-4 Nm.
To close the PE wire into the drive, use the barrel connector, M5 flat washer, M5
spring washer and M5 screw to the heatsink. The required torque is 3-4 Nm.
Figure 3-3: AC Motor Power Connection Diagram
3.4.2.2 Connecting the DC Power
The Power stage of the Drum is fully isolated from other sections of the Drum, such as the
control stage and the heatsink. This contributes very significantly to the safety and the EMI
immunity of the Drum. In addition it simplifies the requirements of the DC power supply
used to power the DC bus of the Drum and allows also the operation with a non-isolated DC
power source.
Operation with an Isolated DC power Supply:
The PE (Protective Ground of the AC network) is connected to the PR terminal [The negative
power terminal (-)].
Drum Installation Guide Installation
MAN-DRUIG (Ver. 1.0)
3-10