Connection Examples For Parallel Operation - Siemens SIMOTICS T-1FW6 Series Configuration Manual

Coupled motors

10.4 Connection examples for parallel operation

The phase angles have been correctly adjusted if the following state is reached while the
axis is rotating in operation:
The reference marks of all rotors are always aligned at the same point in time with the
reference mark of the associated stator.
The machine design must ensure that this applies. You can achieve the required mechanical
adjustability of the mounting position, e.g. using an intermediate flange with elongated holes.
The angular tolerance is +/-1° mechanical.
The stator reference marks do not have to align with one another.
The rotor reference marks do not have to align with one another.
Thermal overload as a result of poor phase angle adjustment
In parallel operation at rated load, a poorly adjusted phase angle results in a thermal
overload of the motors involved. In this case, the motor does not achieve its rated torque
M
N
• Adjust the phase angle as specified.
If you have any questions in this regard, then contact your local Siemens office. For
example, you can obtain information about optimally engineering or dimensioning drive
systems with torque motors operating in parallel.
10.4 Connection examples for parallel operation
Risk of electric shock!
Hazardous touch voltages can be present at unused cores and shields if they have not
been grounded or insulated.
• Refer to the Chapter "Shielding, grounding and equipotential bonding".
The following connection diagrams show, as example, the power and signal connection of
two torque motors electrically connected in parallel in a tandem arrangement.
Table 10- 2
184
CAUTION
in continuous operation.
WARNING
Power connection when operating two torque motors in a tandem arrangement in parallel
Motor Module
U2
V2
W2
Master
U
V
W
Naturally cooled 1FW6 built-in torque motors
Configuration Manual, 07/2017, 6SN1197-0AE01-0BP3
Stoker
Tandem arrangement
U
V
W