Special Case Of A Parallel Connection - Siemens SINAMICS S120 Commissioning Manual

Commissioning
2.13 Commissioning SIMOTICS 1FW6 built-in torque motors
2.13.7

Special case of a parallel connection

Note
Parallel connection
Only torque motors that are the same size and have the same current requirements (same
winding design) can be connected in parallel. The order designations (MLFB) of the motors
must only differ with regard to the position "component (position of the interfaces)".
For more information and connection diagrams, refer to the Configuration Manual
"SIMOTICS T-1FW6 built-in torque motors in Chapter "Coupled motors".
The following requirements must be met in order to operate several torque motors in parallel
on a SINAMICS Motor Module:
● The motors must be arranged according to the data in the Configuration Manual
● The direction of rotation of parallel motors must match the data in the Configuration
● Ensure the position of the EMF voltages of the parallel motors as described under
● Before commissioning and switching-on the DC voltage for the first time, note that the
Then commission the system using the STARTER commissioning tool according to Chapter
"Parameterizing a motor and encoder (Page 173)". The parallel connection for the
SIMOTICS T-1FW6 built-in torque motors selected from the motor list can only be
parameterized in the expert list of the drive.
After completing the configuration, in the STARTER commissioning tool, open the expert list
of the drive and assign parameter p0306 = N, where N is the number of motors to be
operated in parallel. The number of motors set must correspond to the number of motors that
are actually connected in parallel.
After changing p0306, you must unconditionally adapt the control parameters using
automatic calculation with p0340 = 1, see also help for parameter p0306 in the STARTER
commissioning tool.
206
"SIMOTICS T-1FW6 built-in torque motors".
Manual "SIMOTICS T-1FW6 built-in torque motors". For a Janus arrangement, when
connecting the stoker, phases V and W must be interchanged so that the stoker has the
same direction of rotation as the master, also refer to the Configuration Manual
"SIMOTICS T-1FW6 built-in torque motors" Chapter "Power and signal connection for
parallel operation".
Chapter "Checking the angular commutation offset by taking measurements (Page 195)";
it is imperative that you check these carefully. Maintain the maximum deviation of the
phase angle between the EMF voltages of the motors according to Chapter "Check
angular commutation offset by taking measurements". You may only connect the motors
to the converter after the deviation of the commutation angle for all of the motors to be
connected in parallel lies within the limit value.
temperature monitoring circuits must be carefully checked to ensure that they correctly
trip.
Commissioning Manual, (IH1), 01/2013, 6SL3097-4AF00-0BP3
Commissioning Manual